How to lock the secondary timing chain to the idle sprocket using tool 8429? Do one has to remove the idle sprocket bolt?

TDC related to piston one and should be as such.

double posted but this time the CAM pops up.
why not read the FSM first. ? linked below.
or alldata.com . log in and read.

here ill do a paste from JUST install PART chapter.
you are doing ALL THAT book free, REALLY?
https://www.techauthority.com/en-US/Pages/Home.aspx

1. Using a vise, lightly compress the secondary chain tensioner piston until the piston step is flush with the tensioner body. Using a pin or suitable tool, release ratchet pawl by pulling pawl back against spring force through access hole on side of tensioner.
2. While continuing to hold pawl back, Push ratchet device to approximately 2 mm from the tensioner body. Install Special Tool 8514 lock pin into hole on front of tensioner. Slowly open vise to transfer piston spring force to lock pin.
3. Position primary chain tensioner over oil pump and insert bolts into lower two holes on tensioner bracket. Tighten bolts to 250 inch lbs. (28 Nm).
4. Install right side chain tensioner arm. Install Torx®bolt. Tighten Torx®bolt to 250 inch lbs. (28 Nm). CAUTION The silver bolts retain the guides to the cylinder heads and the black bolts retain the guides to the engine block.
5. Install the left side chain guide. Tighten the bolts to 250 inch lbs. (28 Nm).
6. Install left side chain tensioner arm, and Torx®bolt. Tighten Torx®bolt to 250 inch lbs. (28 Nm).
7. Install the right side chain guide. Tighten the bolts to 250 inch lbs. (28 Nm).
8. Install both secondary chains onto the idler sprocket. Align two plated links on the secondary chains to be visible through the two lower openings on the idler sprocket (4 o'clock and 8 o'clock). Once the secondary timing chains are installed, position special tool 8429 to hold chains in place for installation.
9. Align primary chain double plated links with the timing mark at 12 o'clock on the idler sprocket.
10. Align the primary chain single plated link with the timing mark at 6 o'clock on the crankshaft sprocket.
11. Lubricate idler shaft and bushings with clean engine oil. NOTE The idler sprocket must be timed to the counterbalance shaft drive gear before the idler sprocket is fully seated.
12. Install all chains, crankshaft sprocket, and idler sprocket as an assembly . After guiding both secondary chains through the block and cylinder head openings, affix chains with a elastic strap or equivalent. This will maintain tension on chains to aid in installation. Align the timing mark on the idler sprocket gear to the timing mark on the counterbalance shaft drive gear, then seat idler sprocket fully . Before installing idler sprocket bolt, lubricate washer with oil, and tighten idler sprocket assembly retaining bolt to 25 ft. lbs. (34 Nm). NOTE It will be necessary to slightly rotate camshafts for sprocket installation.
13. Align left camshaft sprocket "L" dot to plated link on chain.
14. Align right camshaft sprocket "R" dot to plated link on chain. CAUTION Remove excess oil from the camshaft sprocket bolt. Failure to do so can result in over torque of bolt resulting in bolt failure.
15. Remove Special Tool 8429, then attach both sprockets to camshafts. Remove excess oil from bolts, then Install sprocket bolts, but do not tighten at this time.
16. Verify that all plated links are aligned with the marks on all sprockets and the "V6" marks on camshaft sprockets are at the 12 o'clock position. CAUTION Ensure the plate between the left secondary chain tensioner and block is correctly installed.
17. Install both secondary chain tensioners. Tighten bolts to 250 inch lbs. (28 Nm). NOTE Left and right secondary chain tensioners are not common.
18. Remove all locking pins from tensioners. CAUTION After pulling locking pins out of each tensioner, DO NOT manually extend the tensioner(s) ratchet. Doing so will over tension the chains, resulting in noise and/or high timing chain loads.
19. Using Special Tool 6958, Spanner with Adaptor Pins 8346, tighten left and right . camshaft sprocket bolts to 90 ft. lbs. (122 Nm).
20. Rotate engine two full revolutions. Verify timing marks are at the follow locations: ² primary chain idler sprocket dot is at 12 o'clock ² primary chain crankshaft sprocket dot is at 6 o'clock ² secondary chain camshaft sprockets "V6" marks are at 12 o'clock ² counter balancer shaft drive gear dot is aligned to the idler sprocket gear dot.
21. Lubricate all three chains with engine oil.
22. After installing all chains, it is recommended that the idler gear end play be checked. The end play must be within mm 0.004-0.010 inches (0.10-0.25). If not within specification, the idler gear must be replaced.
23. Install timing chain cover and crankshaft damper.
24. Install cylinder head covers. NOTE Before installing threaded plug in right cylinder head, the plug must be coated with sealant to prevent leaks.
25. Coat the large threaded access plug with Mopar® Thread Sealant with Teflon, then install into the right cylinder head and tighten to 60 ft. lbs. (81 Nm).
26. Install the oil fill housing.
27. Install access plug in left cylinder head.
28. Install power steering pump.
29. Fill cooling system.
30. Connect negative cable to battery.

2001 , no such ani-mule !
"Introduced for the 2002 model year as a replacement for the Cherokee (XJ),"
you meant manufactures date not model and reg. date. sure.
2002 !
3.7L V6 (cop spark ) chain drive cams....
timing ( cam or spark?)
"Ignition timing is controlled by the Powertrain Control Module (PCM). No adjustment is possible"
so Cam timing (alldata.com covers this in detail)
why not post the context, Im doing what.?
im doing a 60k belt swap
or it slipped. or think id did.
or just put in a new head or cam? see , context is 100% important.
im here, going to there.....
im on line, and it shows 4 engines, i think that is wrong, but...

you must be asking chain cam sprocket timing.
im at alldata.com (or FSM)
there are 37 install steps, im not sure what step you want me
to pluck out. but here is my guess. step 8 ,9,10

1. Install both secondary chains onto the idler sprocket. Align two plated links on the secondary chains to be visible through the two lower openings on the idler sprocket (4 o'clock and 8 o'clock). Once the secondary timing chains are installed, position special tool 8429 to hold chains in place for installation.
2. Align primary chain double plated links with the timing mark at 12 o'clock on the idler sprocket.
3. Align the primary chain single plated link with the timing mark at 6 o'clock on the crankshaft sprocket.

step 12:
Install all chains, crankshaft sprocket, and idler sprocket as an assembly . After guiding both secondary chains through the block and cylinder head openings, affix chains with a elastic strap or equivalent. This will maintain tension on chains to aid in installation. Align the timing mark on the idler sprocket gear to the timing mark on the counterbalance shaft drive gear, then seat idler sprocket fully . Before installing idler sprocket bolt, lubricate washer with oil, and tighten idler sprocket assembly retaining bolt to 25 ft. lbs. (34 Nm).

step 13:

1. Align left camshaft sprocket "L" dot to plated link on chain.
2. Align right camshaft sprocket "R" dot to plated link on chain.

step 15/16

1. Remove Special Tool 8429, then attach both sprockets to camshafts. Remove excess oil from bolts, then Install sprocket bolts, but do not tighten at this time.
2. Verify that all plated links are aligned with the marks on all sprockets and the "V6" marks on camshaft sprockets are at the 12 o'clock position.

do ask questions, or login to alldata.com or mitchels
or get a real FSM.
its nothing trivial.

in fact get the book before the job. so are perpared.

Remove camshaft covrs
Remove front cover
Remove or fully retract all three timing chain tensioners
Remove oil pump
Primary and secondary chain guides should remain in place. Rotate crankshaft until sprocket drive key is at about 1 o'clock position.
Set crankshaft and intermediate shaft sprockets into primary drive chain with their timing marks asjacent to each other.
Install crankshaft and intermediate sprockets over their respective shafts. Rotating crankshaft as necessary to engage crankshaft key in sprocket without changing the timing mark relationship.
Install Flywheel Holder Tool (J-39411) to lock crankshaft in position. Install intermediate shaft sprocket retaining bolt and torque to specifications.
Route secondary chain for left cylinder head over inner row of intermediate shaft teeth.
Route secondary drive chain over chain guide, and install exhaust cam sprocket to chain so camshaft drive pin engages the sprocket notch marked "LE" (Left Exhaust).
There dhould be no slack in the lower section of the chain, and the camshaft drive pin must be perpendicular (90 degrees) to the cylinder head surface.
Install the intake camshaft sprocket into the chain so the sprocket notch marked "LI" (Left Intake) engages camshaft drive pin, while drive pin remains perpendicular to the head face. Minor adjustments can be made to camshaft position to get pin to engage by using a wrench on the hex cast into the camshaft.
Install sprocket retainer bolts and torque to specification.
Repet steps as above to install the right secondary chain to the right camshafts. The right camshaft sprockets are marked "RE" and "RI". In addition, the RE sprocket must contain the camshaft position sensor pickup.

1. Remove the fan and generator V belt:



2. TIMING CHAIN (2az-FE Engine):
Before servicing the vehicle, refer to the Precautions Section.
Drain the engine oil.
Remove or disconnect the following:
Negative battery cable
Hood Right-side front wheel Engine under covers Right-side fender apron seal Front exhaust pipe Engine moving control rod and bracket Right-side engine mounting stay and bracket Accessory drive belt Engine appearance cover Engine wire Alternator Power steering pump, leave the hoses connected Ignition coils Ventilation hoses Cylinder head cover Turn the crankshaft pulley to set the No. 1 cylinder to TDC compression. Align the groove on the pulley with the timing mark -0- on the front cover. Remove the crankshaft pulley as follows:

1. TMC made: Use Special Tool 09213-54015 to hold the pulley to loosen the bolt. Use Special Tool 09950-50013 to remove the bolt and pulley.

2. TMMK made: Use Special Tool 09960-10010 to hold the pulley to remove the bolt. Use Special Tool 09950-40011 to remove the crankshaft pulley


Fig. Removing the crankshaft pulley-TMC-2.4L (2AZ-FE) engine


Fig. Removing the crankshaft pulley-TMMK-2.4L (2AZ-FE) engine


Remove or disconnect the following:
Crankshaft position sensor Lower oil pan No. 1 chain tensioner Accessory drive belt tensioner

Support the engine with a suitable engine lifting device.

Remove or disconnect the following:
Engine mounting insulators Right-side engine mounting bracket Stud bolt for the accessory drive belt tensioner from the block Front cover mounting bolts and nuts Front cover Crankshaft position sensor plate Timing chain tensioner slipper Timing chain vibration damper Timing chain Crankshaft timing sprocket

• Turn the crankshaft counterclockwise by 90°, and align an adjusting hole of the oil pump driven sprocket with the groove of the oil pump.

Fig. Align the adjusting hole of the oil pump drive sprocket with the oil pump groove-2.4L (2AZ-FE) engine


Fig. Insert a bar to lock the sprocket in position-2.4L (2AZ-FE) engine
Put a bar in the adjusting hole of the oil pump driven sprocket to temporarily lock the sprocket in position. Remove the nut.


Remove the bolt, chain tensioner and spring.


Remove the chain tensioner, oil pump sprocket and No. 2 timing chain.


To install:
Set the crankshaft key into the left horizontal position. Turn the cutout of the drive shaft to the top

Fig. Align the crankshaft key and drive shaft cutout as shown for installation-2.4L (2AZ-FE) engine
Align the yellow colored links with the timing marks of the sprocket as shown in the illustration.

Insert the sprockets with chain to the crankshaft and oil pump shaft.

Temporarily tighten the oil pump driven sprocket with the nut.

Insert the damper spring into the adjusting hole, and install the chain tensioner plate with the nut. Tighten to 9 ft. lbs. (12 Nm).

Align the adjusting hole of the oil pump driven sprocket with the groove of the oil pump.

Put a bar in the adjusting hole of the oil pump driven sprocket to temporarily lock the sprocket in position. Tighten the nut to 22 ft. lbs. (30 Nm).

Rotate the crankshaft counterclockwise by 90°, and align the crankshaft key to the top.

Install the timing chain vibration damper. Tighten to 80 inch lbs. (9 Nm).

Align the timing marks of the camshaft timing sprockets and bearing caps.

Using the crankshaft pulley bolt, turn the crankshaft and set the set key on the crankshaft upward.

Align the gold or orange colored link with the timing mark of the crankshaft timing sprocket.

Using Special Tool 09309-37010, tap in the sprocket.

Align the gold or yellow colored links with the timing marks of the camshaft timing gear and camshaft timing sprocket. Install the chain.

Fig. Align the marks of the sprockets and bearing caps to set the No. 1 cylinder at TDC-2.4L (2AZ-FE) engine

Fig. Set the crankshaft set key facing upward-2.4L (2AZ-FE) engine

Fig. Align the marked link of the timing chain with crankshaft sprocket timing mark-2.4L (2AZ-FE) engine

Fig. Tap the crankshaft sprocket in with Special Tool 09309-37010-2.4L (2AZ-FE) engine


Fig. Align the marked links of the timing chain with the camshaft sprockets during installation-2.4L (2AZ-FE) engine

Please let me know if you have questions, and thanks for using Fixya.

To install:

1. Rotate the crankshaft so the No. 1 piston is at TDC and the mark on the crankshaft is at the 4 o-clock position.
2. Rotate the balance shaft so the timing mark is at the 5 o-clock position.
   NOTE Be sure the painted links are facing the front of the engine.
3. Install the timing chain on the sprockets.
4. Center the mark on the left intake camshaft sprocket between the 2 painted links.
5. Lift the chain onto the right intake camshaft sprocket. While doing this, align the marks on the balance shaft and crankshaft sprockets with the painted marks on the chain.
6. Verify that all of the timing marks are aligned.
7. Install the primary chain tensioner shoe. Torque the bolt to 22 ft. lbs. (30 Nm).
8. Compress the primary chain tensioner using the following steps:
   1. Rotate the ratchet release lever counterclockwise and hold it.
   2. Press the tensioner shoe in and hold it.
   3. Release the ratchet lever and slowly release the pressure on the shoe.
   4. Insert a pin through the hole in the lever as the lever moves to the first click. The ratchet should hold the shoe in the compressed position.
      NOTE Be sure the lever on the tensioner is facing you when installed.
      
   
   
9. Install or connect the following:
   
   Primary chain tensioner. Torque the bolts to 18 ft. lbs. (25 Nm); then remove the chain tensioner pin. 4 chain guide access plugs. Torque the plugs to 44 inch lbs. (5 Nm). Front engine lift bracket. Torque the hex head bolt to 37 ft. lbs. (50 Nm) and the internal drive bolt to 18 ft. lbs. (25 Nm). CMP sensor. Torque the bolts to 80 inch lbs. (9 Nm).
   
10. Remove the camshaft holding tools.
11. Place a small bead of RTV sealant on the 3 areas indicated in the diagram.
12. Install or connect the following:
    
    Front cover with a new gasket. Torque the bolts to 124 inch lbs. (14 Nm) and the coolant drain plug to 89 inch lbs. (10 Nm). Crankshaft balancer. Torque the bolt to 37 ft. lbs. (50 Nm); then an additional 120 degree turn.
    
13. Raise the engine cradle and install new bolts. Torque the bolts to 133 ft. lbs. (180 Nm).
14. Coat the sub-frame bushings with rubber lubricant.
15. Install or connect the following:
    
    Water pump with a new gasket. Torque the bolts to 124 inch lbs. (14 Nm). Belt tensioner. Torque the bolts to 37 ft. lbs. (50 Nm). Idler pulley. Torque the bolt to 37 ft. lbs. (50 Nm). Power steering pump pulley Drive belt Underhood accessory wiring junction block Washer and coolant reservoirs Battery and tray Front diagonal brace Rocker arm covers. Torque the bolts to 80 inch lbs. (9 Nm). Negative battery cable
    
16. Refill the cooling system.
17. Refill the crankcase.
18. Start the engine and verify no leaks.

Secondary Chain

1. Before servicing the vehicle, refer to the Precautions Section.
2. Disconnect the negative battery cable.
3. Remove the rocker arm cover and install camshaft holding fixture J-42038.
4. Remove the camshaft sprocket bolts and install the timing chain holding fixture J-42042 on the cylinder head.
5. Remove or disconnect the following:
   
   Sprockets and chain Secondary timing sprocket and chain
   

To install:

Fig. Correct sprocket alignment for the left secondary timing chain-3.5L engine

Fig. Correct sprocket alignment for the right secondary timing chain-3.5L engine

1. Install or connect the following:
   
   Secondary timing chain on the sprockets, with the drive pins at the 12 o-clock positions Sprockets and chain assembly onto the camshafts, with the chain properly aligned on the tensioner
   
2. Remove the timing chain holding fixture
3. Install the sprocket bolts. Torque the bolts to 18 ft. lbs. (25 Nm); then an additional 45 degree turn.
   
4. Remove the camshaft holding fixture.
5. Install or connect the following:
   
   Rocker arm cover Negative battery cable

Timing Chain, Sprockets, Front Cover and Seal REMOVAL AND INSTALLATION Crankshaft Damper and Front Oil Seal

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following:
   • Negative battery cable
   • Accessory drive belt
   • Cooling fans
   • Crankshaft pulley and damper, using a holding fixture as shown
   • Front crankshaft seal Fig. 1: Crankshaft pulley removal tool - V8
     
   To install:
   
3. Install oil seal replacer tool JD-235 to the oil seal. Use the nut and bolt provided with the tool to fully seat the seal to the timing cover.
4. For dampers which DO NOT utilize a spit locking ring:
   1. Apply a thin, even coating of Loctite® 648 to the damper bore. Do not apply it to the end faces or to the crankshaft.
   2. Install the crankshaft damper onto the crankshaft. Wipe off any Loctite that has squeezed out from the front of the damper.
   3. Install the locking tool to the damper. Tighten the bolt to 59 ft. lbs. (80 Nm), plus an 80 degree turn.
5. For dampers which utilize a spit locking ring:
   1. Install a new O-ring seal to the damper.
   2. Install the crankshaft damper.
   3. Apply petroleum jelly to the damper bore and O-ring seal.
   4. Install the damper onto the crankshaft.
   5. Install the split locking ring onto the crankshaft, inside the center bore of the damper.
   6. Install the locking tool to the damper.
   7. Tighten the damper bolt to 266-285 ft. lbs. (364-386 Nm).
   8. Remove the locking tool from the damper.
6. Install or connect the following:
   • Cooling fans
   • Accessory drive belt
   • Negative battery cable
7. Start the engine and check for leaks.

Timing Cover

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Drain the cooling system.
3. Remove or disconnect the following:
   • Negative battery cable
   • Upper radiator hose
   • Accessory drive belt
   • Water pump pulley
   • Accessory drive belt tensioner
   • Idler pulley
   • Crankshaft damper
   • Engine appearance covers
   • Mass Air Flow (MAF) meter
   • Air intake assembly
   • Ignition coils
   • Canister purge valve
   • Valve covers
   • Variable Valve Timing (VVT) solenoids
   • Engine harness retaining clips
   • Timing cover
   To install: Fig. 2: Sealant application points - V8
   Fig. 3: Timing cover torque sequence-V8
   
   
4. Apply sealant to the 8 joints on the engine face as shown.
5. Install or connect the following:
   • Timing cover with new seals. Tighten the bolts in sequence to 96-120 inch lbs. (11-13 Nm).
   • Engine harness retaining clips
   • VVT solenoids
   • Valve covers
   • Canister purge valve
   • Ignition coils
   • Air intake assembly
   • MAF meter
   • Engine appearance covers
   • Crankshaft damper
   • Idler pulley
   • Accessory drive belt tensioner
   • Water pump pulley
   • Accessory drive belt
   • Upper radiator hose
   • Negative battery cable
6. Fill the cooling system.
7. Start the engine and check for leaks.

Timing Chain 6 CYLINDER

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following:
   • Negative battery cable
   • Accessory drive belt
   • Valve cover
   • Timing chain cover
   • Variable Valve Timing (VVT) sensor
   • Crankshaft Position (CKP) sensor
3. Rotate the crankshaft until the triangular arrow indent on the driveplate is visible through the access hole.
4. Install the Crankshaft Setting Peg JD 216 into the CKP sensor location.
5. Install the Camshaft Locking tool JD 215 on the camshafts.
6. Remove or disconnect the following:
   • Camshaft sprocket mounting bolt by loosening it
   • VVT mounting bolt by loosening it
   • Camshaft Locking tool JD 215
   • Primary timing chain tensioner and backing plate
   • Primary timing chain guide
   • VVT unit and exhaust camshaft sprocket
   • Secondary timing chain tensioner and guide
   NOTE: Keep all valvetrain components in order for assembly. To install:
   
7. Prepare the timing chain tensioners for installation by using a paperclip or other wire to unseat the check valves and compressing the pistons into their bores.
8. Install or connect the following:
   • Secondary timing chain guide. Tighten the bolt to 89-124 inch lbs. (10-14 Nm).
   • Secondary timing chain tensioner. Tighten the bolt to 89-124 inch lbs. (10-14 Nm).
   • VVT, secondary timing chain and exhaust cam sprocket
   • Primary timing chain
   • Primary timing chain guide. Tighten the bolt to 10-12 ft. lbs. (13-16 Nm).
   • Primary timing chain tensioner and backing plate. Tighten the bolts to 89-124 inch lbs. (10-14 Nm).
   • Primary timing chain slack, eliminate it by placing a wedge between the primary timing chain tensioner and the guide shoe
   • Secondary timing chain by applying counterclockwise force to the exhaust camshaft sprocket. Fig. 4: Apply force in a counterclockwise direction when tightening the sprocket mounting bolts - 6 cylinder
     
     
   • Exhaust and intake VVT sprocket bolts. Tighten them to 85-92 ft. lbs. (115-125 Nm).
9. Remove the tools and wedges.
10. Install or connect the following:
    • CKP sensor
    • VVT sensor
    • Coolant outlet pipe
    • ECT sensor connector
    • Radiator and heater hoses
    • Timing chain cover
    • Valve cover
    • Accessory drive belt
    • Negative battery cable
11. Fill the cooling system.
12. Start the engine and check for leaks.

Timing Chain and Gears REMOVAL & INSTALLATION 1.9L Engine NOTE: The following procedure requires the use of the puller tool No. J-25031 or equivalent, and timing sprocket installation tool No. J-26587 or equivalent.

1. Remove the timing (front) cover from the engine.
2. Lock the shoe on the automatic adjuster in fully retracted position by depressing the adjuster lock lever. NOTE: To remove the timing chain, it may be necessary to remove the camshaft sprocket. Before removing the timing chain, be sure to align the timing marks.
   
3. Remove timing chain from crankshaft sprocket.
4. Check the timing sprockets for wear or damage. If crankshaft sprocket must be replaced, remove the sprocket and the pinion gear from crankshaft using the puller tool No. J-25031 or equivalent.
5. Check timing chain for wear or damage; replace as necessary. Measure distance "L'' (40 links) with the chain stretched with a pull of approximately 22 lbs. (98N). Standard "L'' value is 15 in. (381mm); replace chain if "L'' is greater than 15.16 in. (385mm).
6. Remove the automatic chain adjuster-to-engine bolt and the adjuster.
7. To check the operation of the automatic chain adjuster, push the shoe inwards, if it becomes locked, the adjuster is working properly. The adjuster assembly must be replaced if rack teeth are found to be worn excessively.
8. To remove the chain tensioner, remove the "E'' clip and the tensioner. Check the tensioner for wear or damage; if necessary, replace it. Fig. 1: Timing chain guide and tensioner - 1.9L engine
   
   
9. Inspect the tensioner pin for wear or damage. If replacement is necessary, remove the pin from the cylinder block using a pair of locking pliers. Lubricate the NEW pin tensioner with clean engine oil. Start the pin into block, then place the tensioner over the appropriate pin. Position the E-clip onto the pin, then (using a hammer) tap it into the block until clip just clears tensioner. Check the tensioner and adjuster for freedom of rotation on the pins.
10. Inspect the guide for wear or damage and plugged lower oil jet. If replacement or cleaning is necessary, remove the guide bolts, the guide and the oil jet. Install a new guide and upper attaching bolt. Install the lower oil jet and bolt, so that the oil port is pointed toward crankshaft. To install: Fig. 2: Timing chain alignment and installation - 1.9L engine
    Fig. 3: Inspecting the timing chain for wear
    
    
11. Install the timing sprocket and the pinion gear (groove-side toward the front cover). Align the key groove with crankshaft key, then drive it into position using installation tool No. J-26587 or equivalent.
12. Turn the crankshaft so that key is turned toward the cylinder head-side (No. 1 and No. 4 pistons at TDC).
13. Install the timing chain, align the timing chain mark plate with the mark on the crankshaft timing sprocket. The side of the chain with the mark plate is on the front-side and the side of chain with the most links between mark plates is on the chain guide-side. Keep the timing chain engaged with the camshaft timing sprocket until the camshaft timing sprocket is installed on the camshaft.
14. Install the camshaft timing sprocket so that it's marked-side faces forward and it's triangular mark aligns with the chain mark plate.
15. Install the automatic chain adjuster.
16. Release the lock by depressing the shoe on adjuster by hand, and check to make certain the chain is properly tensioned when the lock is released.
17. Install the timing cover assembly.

Discoverd this indepth expalaination of process steps involved in the installation of the timing chain from an ASE certified technician. I hope this helps. See the repair manual on the link below.<br /> <br /> Link: <a href="http://www.2carpros.com/forum/2002-jaguar-xj8--gearbox-default-appear-on-dashboard/2000-jaguar-xj8-timing-chain-replacement-vt218070.html">http://www.2carpros.com/forum/2002-jaguar-xj8--gearbox-default-appear-on-dashboard/2000-jaguar-xj8-timing-chain-replacement-vt218070.html</a><br /> <table id="table14" style="BORDER-RIGHT: #000000 1px dashed; BORDER-TOP: #000000 1px dashed; BORDER-LEFT: #000000 1px dashed; BORDER-BOTTOM: #000000 1px dashed" bordercolordark="#000000" width="100%" bordercolorlight="#000000" border="0"> <tbody> <tr> <td style="BORDER-TOP-WIDTH: 1px" width="700"></td></tr> <tr> <td style="BORDER-TOP-WIDTH: 1px" width="700"><span class="name" roundtrip="0" lastvisited="3">By <a name="755408"></a><b roundtrip="0" lastvisited="0">Dave H</b>,<b> </b></span><span class="postdetails" roundtrip="0" lastvisited="0">Certified ASE Technician</span></td></tr> <tr> <td style="BORDER-TOP-WIDTH: 1px" width="100%" roundtrip="0" lastvisited="6"></td></tr> <tr> <td style="BORDER-TOP-WIDTH: 1px" width="700"></td></tr> <tr> <td style="BORDER-LEFT-WIDTH: 1px; BORDER-BOTTOM-WIDTH: 1px; BORDER-RIGHT-WIDTH: 1px"> </td> </tr> <tr> <td colspan="2"> <span class="postbody" roundtrip="0" lastvisited="77">PRIMARY TIMING CHAINS (NON-SUPERCHARGED) <br />NOTE:The 4.0L V8 has no engine timing alignment marks on the crankshaft or camshafts. Engine timing is achieved by installing the Crankshaft Setting Peg (303-531) and Camshaft Locking Tool (303-530). With the crankshaft setting peg in position, ensure the timing flat on each camshaft is in the uppermost position before installing camshaft locking tool. Variable camshaft timing unit may also be referred to as Variable Valve Timing (VVT) unit. <br /><br />NOTE:Special Tools Required: Crankshaft Setting Peg (303-531), Camshaft Locking Tool (303-530), Chain Tensioning Tool (303-532), Primary Chain Wedge (303-533) and Variable Camshaft Timing Oil Control Unit Setting Tool (303-654). See Fig. 232-Fig. 236 . <br /><br />NOTE:"A" bank refers to the right/passenger side of the vehicle and "B" bank refers to left/driver side of the vehicle. <br /><br />NOTE:Each door glass automatically drops 12 mm when the door is opened or when the convertible top is raised or lowered. It is important that windows are lowered before battery is disconnected to allow doors to shut properly. <br /><br />Removal ("A" Bank) <br />Tips Click a link to view tip <br />Tech1Tip: special tool <br /><br /><br />Remove timing cover. See TIMING CHAIN COVER (NON-SUPERCHARGED). <br />Remove the variable camshaft timing oil control solenoid. </span><br /> <span class="postbody" roundtrip="0" lastvisited="77">Remove the variable camshaft timing oil control unit housing retaining bolts and remove the variable camshaft timing oil control unit housing. </span><br /> <span class="postbody" roundtrip="0" lastvisited="77">Remove and discard the variable camshaft timing oil control unit housing "O" rings. <br />Raise and support vehicle. Remove the bolt which secures the Crankshaft Position (CKP) sensor to the flywheel housing. Remove the CKP sensor and allow it to hang free under the engine. Remove the torque converter bolts access grommet from the flywheel housing. </span><br /> <span class="postbody" roundtrip="0" lastvisited="77">Install the crankshaft damper bolt (old one) to the crankshaft, hand-tight only. Rotate crankshaft until the triangular arrow indent on the flywheel is visible through the access hole. See Fig. 144. Confirm that the timing flat on each camshaft is uppermost position. <br />Position the crankshaft so that the Crankshaft Setting Peg (303-531) engages fully into the timing slot. Install and tighten the bolt to secure the crankshaft setting peg. See Fig. 145. Remove the crankshaft damper bolt from the crankshaft and lower the vehicle. <br />Install the Camshaft Locking Tool (303-530) to the "A" bank camshafts, aligning the shafts slightly as necessary. Loosen the bolt that secures the exhaust camshaft sprocket and the bolt that secures the variable camshaft timing oil control unit. See Fig. 146. Remove camshaft locking tool. <br />Remove the primary chain tensioner bolts, primary chain tensioner and tensioner backing plate. See Fig. 147. <br />Remove the primary timing chain tensioner pivot bolt and remove the primary timing chain tensioner blade. See Fig. 148. <br />Remove the bolt which secures the primary timing chain guide. Noting the position of the primary timing chain guide, remove the primary timing chain guide from the upper retaining pin. See Fig. 149. <br />Remove the primary timing chain from the variable camshaft timing oil control unit and from the crankshaft sprocket. Clean and inspect all components. <br />Installation <br />If "B" bank timing chain was removed, see INSTALLATION. If not, go to next step. <br />If previously removed, install the timing chain sprocket to the crankshaft. The teeth of the "A" bank and the "B" bank timing chain sprockets on the crankshaft must be out of phase with each other. If they are in phase after installing, remove the sprocket, turn it on its vertical axis and reinstall sprocket. See Fig. 150. <br />Install the chain tensioning tool to the exhaust camshaft sprocket. Reposition the sprocket (and the variable camshaft timing oil control unit) for the most advantageous position for use of the tool. See Fig. 151. Remove the tool. <br />Install the primary timing chain into position over the crankshaft sprocket and the variable camshaft timing oil control unit. There must be no slack on the drive side of the primary timing chain and the sprockets must not be rotated on the camshafts, or the tensioning tool may not fit. See Fig. 152. <br />Install the primary timing chain tensioner blade to the cylinder block. See Fig. 148. Install the pivot bolt and tighten specification. See TORQUE SPECIFICATIONS. <br />Push the primary timing chain tensioner piston into the tensioner body to provide clearance for installing the primary timing chain. Insert a thin rigid wire through the hole in the end of the tensioner piston to displace the ball from the non-return valve seat. See Fig. 153. With the wire in position, press the piston fully into the tensioner body. Remove the wire. <br />Install the 2 primary timing chain tensioner bolts to the primary timing chain tensioner and locate the tensioner backing-plate on to the 2 bolts. Align and install the primary timing chain tensioner to the cylinder block and to the mating slot on the rear face of the primary timing chain tensioner blade. See Fig. 147. Tighten the primary timing chain tensioner bolts to specification. See TORQUE SPECIFICATIONS. <br />Use a Primary Chain Wedge (303-533), or 2 if needed, between the primary timing chain tensioner and primary timing chain tensioner blade, to take up the slack in the chain for tightening of the variable camshaft timing control unit and exhaust camshaft sprocket. See Fig. 154. <br />Using the chain tensioning tool, apply force to the tool in an counterclockwise direction to tension the chain on its drive side. See Fig. 151. While applying opposing force to the sprocket and chain, tighten the exhaust camshaft sprocket bolt to specification. See TORQUE SPECIFICATIONS. <br />Using the Variable Camshaft Timing Oil Control Unit Setting Tool (303-654), rotate the variable camshaft timing oil control unit fully counterclockwise to the fully retarded position. See Fig. 155. <br />Check that the primary chain wedges are still in place. While applying opposing force to the sprocket and chain using the chain tensioning tool, tighten the variable camshaft timing oil control unit bolt to specification. See TORQUE SPECIFICATIONS. Remove the chain tensioning tool and the primary chain wedges and camshaft locking tool. <br />Raise and support vehicle. Remove crankshaft setting peg. Install the CKP sensor and bolt to the flywheel housing. See Fig. 143. Tighten the CKP sensor bolt to specification. See TORQUE SPECIFICATIONS. Install the access grommet to the housing and lower the vehicle. <br />WARNING:Check that the ring dowels are engaged squarely. Fully locate the assembly as much as possible by hand. Failure to follow this procedure may result in damage to the vehicle. <br /><br />Install NEW "O" rings to the variable camshaft timing oil control unit housing. Lubricate the "O" rings and the bushing. Install the variable camshaft timing oil control unit housing. See Fig. 142. Install the variable camshaft timing oil control unit housing bolts. Tighten to specification. See TORQUE SPECIFICATIONS. <br />Install the variable camshaft timing oil control solenoid. See Fig. 141. Install and tighten the variable camshaft timing oil control solenoid bolt to specification. See TORQUE SPECIFICATIONS. <br />Install the timing chain cover. See TIMING CHAIN COVER (NON-SUPERCHARGED). </span><br /></td></tr></tbody></table>

INSTALLATION

1. Using a vise, lightly compress the secondary chain tensioner piston until the piston step is flush with the tensioner body. Using a pin or suitable tool, release ratchet pawl by pulling pawl back against spring force through access hole on side of tensioner. While continuing to hold pawl back, Push ratchet device to approximately 2 mm from the tensioner body. Install Special Tool 8514 lock pin into hole on front of tensioner. Slowly open vise to transfer piston spring force to lock pin (Resetting Secondary Chain Tensioners).
2. Position primary chain tensioner over oil pump and insert bolts into lower two holes on tensioner bracket. Tighten bolts to 28 N·m (250 in. lbs.). CAUTION: Overtightening the tensioner arm torx® bolt can cause severe damage to the cylinder head. Tighten torx® bolt to specified torque only.
   
3. Install right side chain tensioner arm. Apply Mopar® Lock N, Seal to torx® bolt, tighten bolt to 17 N·m (150 in. lbs.). NOTE: The silver bolts retain the guides to the cylinder heads and the black bolts retain the guides to the engine block.
   
4. Install the left side chain guide. Tighten the bolts to 28 N·m (250 in. lbs.). CAUTION: Overtightening the tensioner arm torx® bolt can cause severe damage to the cylinder head. Tighten torx® bolt to specified torque only.
   
5. Install left side chain tensioner arm. Apply Mopar® Lock N, Seal to torx® bolt, tighten bolt to 17 N·m (150 in. lbs.).
6. Install the right side chain guide. Tighten the bolts to 28 N·m (250 in. lbs.).
7. Install both secondary chains onto the idler sprocket. Align two plated links on the secondary chains to be visible through the two lower openings on the idler sprocket (4 o'clock and 8 o'clock). Once the secondary timing chains are installed, position special tool 8515 to hold chains in place for installation (Installing Secondary Timing Chains on Idler Sprocket).
8. Align primary chain double plated links with the timing mark at 12 o'clock on the idler sprocket. Align the primary chain single plated link with the timing mark at 6 o'clock on the crankshaft sprocket (Timing Chain System).
9. Lubricate idler shaft and bushings with clean engine oil.
10. Install all chains, crankshaft sprocket, and idler sprocket as an assembly (Installing Idler Gear, Primary and Secondary Timing Chains). After guiding both secondary chains through the block and cylinder head openings, affix chains with a elastic strap or the equivalent, This will maintain tension on chains to aid in installation. NOTE: It will be necessary to slightly rotate camshafts for sprocket installation.
    
11. Align left camshaft sprocket “L” dot to plated link on chain.
12. Align right camshaft sprocket “R” dot to plated link on chain. CAUTION: Remove excess oil from the camshaft sprocket bolt. Failure to do so can result in over-torque of bolt resulting in bolt failure.
    
13. Remove Special Tool 8515, then attach both sprockets to camshafts. Remove excess oil from bolts, then Install sprocket bolts, but do not tighten at this time.
14. Verify that all plated links are aligned with the marks on all sprockets and the “V8” marks on camshaft sprockets are at the 12 o'clock position (Timing Chain System). CAUTION: Ensure the plate between the left secondary chain tensioner and block is correctly installed.
    
15. Install both secondary chain tensioners. Tighten bolts to 28 N·m (250 in. lbs.). NOTE: Left and right secondary chain tensioners are not common.
    
16. Before installing idler sprocket bolt, lubricate washer with oil, and tighten idler sprocket assembly retaining bolt to 34 N·m (25 ft. lbs.).
17. Remove all locking pins (3) from tensioners. CAUTION: After pulling locking pins out of each tensioner, DO NOT manually extend the tensioner(s) ratchet. Doing so will over tension the chains, resulting in noise and/or high timing chain loads.
    
18. Using Special Tool 6958, Spanner with Adaptor Pins 8346, tighten left (Tightening Left Side Camshaft Sprocket Bolt) and right (Tightening Right Side Camshaft Sprocket Bolt). camshaft sprocket bolts to 122 N·m (90 ft. lbs.).
19. Rotate engine two full revolutions. Verify timing marks are at the follow locations:
    • primary chain idler sprocket dot is at 12 o'clock (Timing Chain System)
    • primary chain crankshaft sprocket dot is at 6 o'clock (Timing Chain System)
    • secondary chain camshaft sprockets “V8” marks are at 12 o'clock (Timing Chain System)
20. Lubricate all three chains with engine oil.
21. After installing all chains, it is recommended that the idler gear end play be checked (Measuring Idler Gear End Play). The end play must be within 0.10–0.25 mm (0.004–0.010 in.). If not within specification, the idler gear must be replaced.
22. Install timing chain cover (Refer to 9 - ENGINE/VALVE TIMING/TIMING BELT / CHAIN COVER(S) - INSTALLATION) and crankshaft damper (Refer to 9 - ENGINE/ENGINE BLOCK/VIBRATION DAMPER - INSTALLATION).
23. Install cylinder head covers (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - INSTALLATION). NOTE: Before installing threaded plug in right cylinder head, the plug must be coated with sealant to prevent leaks.
    
24. Coat the large threaded access plug with Mopar® Thread Sealant with Teflon, then install into the right cylinder head and tighten to 81 N·m (60 ft. lbs.) (Cylinder Head Access Plug Location).
25. Install the oil fill housing.
26. Install access plug in left cylinder head (Cylinder Head Access Plug Location).
27. Install power steering pump (Refer to 19 - STEERING/PUMP - INSTALLATION).
28. Install radiator fan shroud.
29. Fill cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE).
30. Connect negative cable to battery.