Torque to apply to cylinder head bolts and camshaft bolts

20. INSTALL CYLINDER HEAD COVER SUB-ASSY
(a) Apply seal packing to the cylinder head as shown in the
illustration.
Seal packing: Part No. 08826-00080 or equivalent
NOTICE:

Remove any oil from the contact surface.

Install the cylinder head cover within 3 minutes after
applying seal packing.

Do not start the engine within 2 hours after installing.
(b) Install the cylinder head cover with the 9 bolts. Tighten the
bolt uniformly in several steps.
Torque: 8.0 Nm (80 kgf cm, 71 in.lbf)
(c) Install the engine wire harness with the 3 nuts.
Torque: 8.4 Nm (85 kgf cm, 74 in.lbf)
21. INSTALL CYLINDER HEAD COVER SUB-ASSY LH
(a) Apply seal packing to the cylinder head as shown in the
illustration.
Seal packing: Part No. 08826-00080 or equivalent
NOTICE:

Remove any oil from the contact surface.

Install the cylinder head cover within 3 minutes after
applying seal packing.

Do not start the engine within 2 hours after installing.
(b) Install the cylinder head cover with the 9 bolts. Tighten the
bolt uniformly in several steps.
Torque: 8.0 Nm (80 kgf cm, 71 in.lbf)
(c) Using an E6 torx) socket wrench, install the engine wire
harness protector with the 2 bolts.
Torque: 8.4 Nm (85 kgf cm, 74 in.lbf)

This is year/make/model specific to the 2nd Gen Sienna. Taken from the 05 Toyota Sienna repair manual. Hope this answers your torque specs for the valve covers which uses 10 mm bolts. If in doubt, as Scotty Kilmer asserts, do a "German tight".

This is a three-step procedure that involves progressively increasing the amount of torque you apply with a torque wrench. Just do this:

1. The first step is to tighten the cylinder head bolts to a range of 50 to 55 foot-pounds.
2. The second step is to further tighten the cylinder head bolts to a range of 60 6o 65 foot-pounts.
3. The third step is to finally tighten the cylinder head bolts to a range of 70 to 85 foot-pounds of torque.

That should take care of it.

Toyota 4A/ 5A-FE Cylinder Head Torque:
(a) Apply a light coat of engine oil on the threads and under the heads of the cylinder head bolts.
(b) Install the plate washer to each cylinder head bolt.
(c) Install and uniformly tighten the ten cylinder head bolts in several passes in the sequence.
Torque: 60 N-m (610 kgf-cm, 44 ft-lbf)
HINT: Cylinder head bolts are in length of 90 mm
(3.54 in.) and 108 mm (4.25 in.). Install the 90 mm
(3.54 in.) bolts (A) in intake manifold side positions.
Install the 108 mm (4.25 in.) bolts (B) in exhaust
manifold side positions.

Apply a light coat of engine oil on the threads and
under the heads of the cylinder head bolts.
- Install the plate washer to each cylinder head
bolt.
- Using Torque wrench, install and uniformly tighten the ten
cylinder head bolts in several passes.
Torque: 60 N-m (610 kgf-cm, 44 ft-lbf)

Check this on 1993 Dodge Truck Dakota 4WD 3.9L FI 6cyl



Fig. 5: Make sure the timing alignment marks are in line as shown-V6 and V8 engines



CHECKING TIMING CHAIN SLACK

This procedure applies to all models that use a timing chain.

See Figure 9

1. Position a scale (ruler of straightedge) next to the timing chain to detect any movement in the chain.
2. Place a torque wrench and socket on the camshaft sprocket attaching bolt. If the cylinder heads are installed on the engine, apply 30 ft. lbs. (41 Nm). If the heads are removed, apply 15 ft. lbs. (20 Nm) of force to the bolt and rotate the bolt in the direction of crankshaft rotation in order to remove all slack from the chain.

1. While applying torque to the camshaft sprocket bolt, the crankshaft should not be allowed to rotate. It may be necessary to block the crankshaft to prevent its rotation.
2. Position the scale over the edge of a timing chain link and apply an equal amount of torque in the opposite direction. If the movement of the chain exceeds 1 / 8 in. (3mm), replace the chain.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Removal & Installation

3.5L Engine

1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
2. Record the radio anti theft code data.
3. Remove or disconnect the following:
   
   Negative battery cable Engine cover Accessory drive belts Idler pulley Crankshaft pulley Power steering pump pulley Belt tensioner pulley Upper and lower timing belt covers
   
4. Support the engine with a floor jack and remove the engine mount.
5. Rotate the engine to align the camshaft sprocket timing marks with the cylinder head cover timing marks.
   
   

   Fig. Timing belt routing and timing marks-3.5L Engine
   

6. Remove or disconnect the following:
   
   Auto tensioner Timing belt
   
   

   Fig. Timing belt and related components-3.5L Engine
   
   

To install:

1. Ensure that the engine is set to Top Dead Center (TDC).
2. Prepare the auto tensioner for installation by compressing it in a vise and installing a retaining pin.
3. Install the timing belt in the following order:
   1. Crankshaft sprocket
   2. Idler pulley
   3. Left bank exhaust camshaft sprocket
   4. Left bank intake camshaft sprocket
   5. Water pump pulley
   6. Right bank intake camshaft sprocket
   7. Right bank exhaust camshaft sprocket
   8. Tensioner pulley
   
   
4. Install the auto tensioner. Do not remove the retaining pin at this time.
5. Check that the crankshaft and camshaft timing marks are aligned correctly.
6. Rotate the crankshaft 1 / 4 turn Counterclockwise .
7. Rotate the crankshaft 1 / 4 turn Clockwise to return the engine to TDC.
8. Loosen the tensioner pulley center bolt.
9. Apply 44 inch lbs. (5 Nm) torque to the tensioner pulley as shown and tighten the center bolt to 32-41 ft. lbs. (43-55 Nm).
   
   

   Fig. Adjusting the tensioner pulley-3.5L Engine
   

10. Remove the auto tensioner retaining pin.
11. Rotate the crankshaft 2 revolutions Clockwise , then wait 5 minutes for the auto tensioner to adjust.
12. Measure the auto tensioner rod as shown. If the measurement is not 3.8-4.5 mm, then repeat the belt tensioning procedure.
    
    

    Fig. Measuring the auto tensioner rod-3.5L Engine
    

13. When the auto tensioner measurement is correct, install or connect the following:
    
    Engine mount Upper and lower timing belt covers Belt tensioner pulley Power steering pump pulley Crankshaft pulley Idler pulley Accessory drive belts Engine cover Negative battery cable
    
14. Reprogram the radio anti theft codes.

    Kia_Sedona_2002-2006
    Timing Chain, Sprockets, Front Cover & Seal

    • REMOVAL & INSTALLATION

    Print
    

    
    Removal & Installation
    
    3.8L Engine
    

    1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
    2. Record the radio anti theft code data.
    3. Remove the engine from the vehicle.
    4. Remove the drive belt. Remove the power steering pump. Remove the air conditioning compressor.
    5. Remove the alternator. Remove the drive belt idler. Remove the drive belt tensioner. Remove the water pump pulley. Remove the intake manifold.
    6. Remove the connector bracket from the left cylinder head cover. Disconnect the right ignition coil connector, condenser connector and remove the bracket.
    7. Remove the left cylinder head cover retaining bolts. Remove the cylinder head cover from the engine.
    8. Remove the right cylinder head cover retaining bolts. Remove the cylinder head cover from the engine.
    9. Set the No. 1 cylinder to TDC on the compression stroke. Turn the crankshaft pulley and align its groove with the timing mark T of the lower timing chain cover.
    10. Check that the mark of the camshaft timing sprockets are in straight line positioning on the cylinder head surface. If not rotate the crankshaft 360 degrees. Do not rotate the engine counterclockwise.
    11. Remove the oil pan. Remove the crankshaft damper pulley. Remove the timing chain cover.
        NOTE Be careful not to damage the contact surfaces of the cylinder block, cylinder head and timing chain cover. Before removing the timing chain, mark the right and left timing chains with an identification mark based on the location of the sprocket because the identification mark on the chain for TDC can be erased.
        
    12. After compressing the timing chain tensioner, install a set pin. Remove the right cam to cam guide. Remove the right timing chain auto tensioner and timing chain tensioner arm.
    13. Remove the oil pump chain cover. Remove the oil pump chain tensioner assembly. Remove the oil pump chain guide. Remove the right timing chain.
    14. Remove the right timing chain guide. Remove the oil pump chain sprocket and oil pump chain. Remove the crankshaft sprocket, oil pump and camshaft drive gear.
    15. Remove the left cam to cam guide. Remove the left timing chain auto tensioner and timing chain tensioner arm. Remove the left timing chain.
    16. Remove the left timing chain guide. Remove the crankshaft sprocket and left camshaft drive. Remove the tensioner adapter assembly.
        
        

        Fig. Timing chain and related components-3.8L Engine
        

    
    To install:
    
    1. Check the camshaft and crankshaft sprockets for wear and damage, replace as required.
    2. Inspect the tensioner arm and chain guide for wear and damage, replace as required.
    3. Check that the tensioner pin moves smoothly when the ratchet pawl is released with a thin rod.
    4. The key of the crankshaft should be aligned with the timing mark of the timing chain cover. This indicates that the piston is at TDC on the compression stroke.
    5. Install the tensioner adapter assembly. Install the crankshaft sprocket and left camshaft drive.
    6. Install the left timing chain guide and torque the retaining bolts 14-18 ft. lbs.
    7. Install the left timing chain. Be sure to install the chain with no slack between the camshaft and the crankshaft (crankshaft sprocket, timing chain guide, exhaust camshaft sprocket, intake camshaft sprocket). The timing mark of each sprocket should be matched with the timing mark (color ink) of the timing chain at installation of the timing chain.
       
       

       Fig. Left timing chain markings and installation: (D) exhaust camshaft sprocket (C) intake camshaft sprocket-3.8L Engine
       

    8. Install the left timing chain tensioner arm and torque the retaining bolts 14-16 ft. lbs.
    9. Install the left timing chain tensioner and torque the retaining bolts 7-9 ft. lbs.
    10. Install the left cam to cam guide and torque the retaining bolts 7-9 ft. lbs.
    11. Install the crankshaft sprocket, oil pump and right camshaft drive.
    12. Install the oil pump chain and oil pump sprocket. Torque the retaining bolt to 14-16 ft. lbs.
    13. Install the right timing chain guide. Torque the retaining bolts to 14-18 ft. lbs.
    14. Install the right timing chain. Be sure to install the chain with no slack between the camshaft and the crankshaft (crankshaft sprocket, intake camshaft sprocket, exhaust camshaft sprocket). The timing mark of each sprocket should be matched with the timing mark (color ink) of the timing chain at installation of the timing chain.
        
        

        Fig. Right timing chain markings and installation: (C) exhaust camshaft sprocket (B) intake camshaft sprocket-3.8L Engine
        

    15. Install the right timing chain tensioner arm. Torque the retaining bolts to 14-17 ft. lbs.
    16. Install the right timing chain auto tensioner. Torque the retaining bolts to 7-9 ft. lbs.
    17. Install the right cam to cam guide and torque the retaining bolts to 7-9 ft. lbs.
    18. Install the oil pump chain guide. Torque the retaining bolts to 7-9 ft. lbs.
    19. Install the oil pump tensioner assembly. Torque the retaining bolts to 7-9 ft. lbs.
    20. Pull out the pins on both the left and right hydraulic tensioners. Install the oil pump chain cover.
    21. Rotate the crankshaft two revolutions in the clockwise direction. Confirm the timing mark. Be sure to rotate the crankshaft in the clockwise direction.
    22. Apply sealant on the chain cover and on the cylinder head, cylinder block, and lower oil pan. Be sure these parts are free of engine oil and dirt.
        NOTE Before assembling the timing chain cover, the liquid sealant TB1217H should be applied on the gap between the cylinder head and block. The part must be assembled with five minutes after the sealant is applied.
        
        
        

        Fig. Sealant application (1 inch bead width)-3.8L Engine
        

    23. Apply sealant on the chain cover.
        NOTE The liquid sealant TB1217H should be applied on the gap between the cylinder head and block. The part must be assembled with five minutes after the sealant is applied.
        
        
        

        Fig. Timing cover sealant application-3.8L Engine
        

    24. Install a new gasket to the timing case cover.
        NOTE It is important that the dowel pins on the cylinder block and holes on the timing chain cover should be used as a reference in order to assemble the timing chain cover in the correct position.
        
        
        

        Fig. Timing cover gasket installation (A) gaskets-3.8L Engine
        

    25. Install the timing chain cover. Torque the retaining bolts in the proper sequence and to specification. The engine should not be started for at least thirty minutes after timing chain cover assembly.
        
        

        Fig. Timing cover bolt torque sequence and specification-3.8L Engine
        

    26. Install the timing case cover oil seal.
    27. Continue the installation in the reverse order of the removal procedure.

Hi, this engine uses plated links in the chain to match marks on the gears. See figure and installation procedure below. Let me know if you have any questions and thanks for using FixYa.

1. Install the timing chain by performing the following procedure:

1. Verify that the crankshaft sprocket timing mark is aligned with the mark on the oil pump housing.
2. Place the left side primary timing chain sprocket onto the chain, while aligning the timing mark on the sprocket to the 2 plated links on the chain.
3. Lower the chain with the left sprocket through the left cylinder head opening.
4. Loosely position the left camshaft sprocket over the camshaft hub.
5. Align the plated link to the crankshaft sprocket timing mark.
6. Position the timing chain around the water pump drive sprocket.
7. Align the right camshaft sprocket timing mark to the plated link on the timing chain and loosely position the sprocket over the camshaft hub.
8. Verify that all the plated links are aligned to their proper timing marks.
   

1. Install the left lower timing chain guide and tensioner. Torque the bolts to 21 ft. lbs. (28 Nm).
   NOTE Inspect the timing chain guide access plug O-rings before installing. Replace damaged O-rings as necessary.
   
2. Install the timing chain guide access plug to the left cylinder head and torque to 15 ft. lbs. (20 Nm).
   NOTE To reset the timing chain tensioner, oil will first need to be purged from the tensioner.

1. Purge oil from the timing chain tensioner using the following procedure:

1. Remove the tensioner from the tensioner housing.
2. Place the check ball end of the tensioner into the shallow end of the Tensioner Resetting Special tool 8186.
3. Using hand pressure, slowly depress the tensioner until oil is purged from the cylinder.
4. Reinstall the tensioner into the tensioner housing.

1. Reset the timing chain tensioner using the following procedure:

1. Position the cylinder plunger into the deeper side of the Tensioner Resetting special tool 8186. Apply a downward force until the tensioner is reset.
   

WARNING

Ensure that the tensioner is properly reset. The tensioner body must be bottomed against the top edge of the Tensioner Resetting Special tool 8186. Failure to properly perform the resetting procedure may cause tensioner jamming.

1. Install the chain tensioner into the right cylinder head.
   
2. At the right cylinder head, insert a 3 / 8 in. square drive extension with a breaker bar into the intake camshaft drive hub. Rotate the camshaft until the camshaft hub aligns with the camshaft sprocket and damper attaching holes. Install the sprocket attaching bolts and torque to 21 ft. lbs. (28 Nm).
3. Turn the left camshaft by inserting a 3 / 8 in. square drive extension with a breaker bar into the intake camshaft drive hub. Rotate the camshaft until the camshaft hub aligns with the camshaft sprocket and damper attaching holes. Install the sprocket attaching bolts and torque to 21 ft. lbs. (28 Nm).
4. If necessary, rotate the engine slightly clockwise to remove any slack in the timing chain.
5. To arm the timing chain tensioner: Use a flat-bladed prytool to gently pry the tensioner arm towards the tensioner slightly. Then, release the tensioner arm. Verify the tensioner extends.
6. Inspect and replace the timing chain cover gasket and oil seal.
7. Apply a 1 / 8 in. (3mm) bead of sealer at the parting line of the oil pan and engine block.
   NOTE When installing the timing cover, guide the seal over the crankshaft to prevent damage to the seal-s lip.
   

Install or connect the following:

Timing cover and gasket and torque the M10 bolts to 40 ft. lbs. (54 Nm) and the M6 bolts to 105 inch lbs. (12 Nm)

Accessory drive belt tensioner pulley

Power steering pump

Crankshaft damper

Crankshaft center bolt and torque the bolt to 125 ft. lbs. (170 Nm) using tool 8191

Accessory drive belts

Fan module and electrical wiring harness

Upper radiator crossmember

Negative battery cable

To install:

Fig. Cylinder head bolt torque sequence-3.8L engine

1. Install the new cylinder head gasket with the arrow pointing to the front of the engine.
2. Install the cylinder head.
3. Install NEW cylinder head bolts. Torque the bolts in sequence, as follows:
   1. Step 1: 37 ft. lbs. (50 Nm).
   2. Step 2: Plus 120 degree turn.

To install:

Fig. Tighten the cylinder head bolts using the following sequence-31L and 3.4L engines

1. Install the cylinder head with a new gasket.
2. Apply thread sealer to the head bolts.
3. Tighten the cylinder head bolts to 37 ft. lbs. (50 Nm) plus an additional 90 degree turn.

install:

1. The cylinder head should be cleaned and inspected prior to installation.
2. Lightly oil all bolt and stud bolt threads before installation.
3. Clean all gasket mating surfaces thoroughly.
4. Install a new head gasket on the cylinder block. WARNING Always use new cylinder head bolts when installing the cylinder head or damage to the engine may occur.
5. Install the cylinder head on the cylinder block.
6. Tighten the cylinder head bolts in reverse of the removal sequence. Tighten the 2004 cylinder head bolts to 18 ft. lbs. (25 Nm). Tighten an additional 70°, plus 70°, plus another 50°. Tighten 2005 bolts to 18 ft. lbs. (25 Nm). Tighten an additional 60°, plus 60°, plus another 10°.
7. Install the right engine mount. Tighten the engine mount attaching bolts to 22 ft. lbs. (30 Nm).
8. Install or connect the following:
   • Intake manifold
   • Intake manifold support bracket. Tighten the bolts to 18 ft. lbs. (25 Nm).
   • Throttle cable
   • Surge tank coolant hose
   • Heater hose to cylinder head
   • Fuel feed line at the fuel rail
   • All vacuum hoses
   • Exhaust manifold
   • Rear timing belt cover
   • Timing belt tensioner. Tighten the bolts to 18 ft. lbs. (25 Nm).
   • Idler pulley. Tighten the bolts to 18 ft. lbs. (25 Nm).
   • Intake and exhaust camshaft gears. Tighten the bolts to 49 ft. lbs. (68 Nm).
9. Apply a small amount of gasket sealant to the corners of the front camshaft caps and the top of the rear camshaft cover-to-cylinder head seal.
10. Install the valve cover using a new gasket
11. Align the timing marks on the camshaft gears.
12. Align the mark on the crankshaft gear with the notch at the bottom of the rear timing belt cover.
13. Install the timing belt and rotate the water pump clockwise to apply tension to the timing belt.
14. Tighten the water pump bolts to 89 inch lbs. (10 Nm).
15. Adjust the timing belt tension.
16. Install or connect the following:
    • Spark plug wires
    • Upper and lower timing belt coversCrankshaft pulley. Tighten the bolt to 70 ft. lbs. (95 Nm), plus an additional 30°, then another 15°.
    • Accessory drive belt
    • Air cleaner housing
    • Radiator hoses
    • Front splash shield
    • Right front wheel
    • Coolant temperature sensor
    • Fuel feed line from fuel rail
    • IAT sensor
    • Intake manifold pressure sensor
    • DIS coil connector
    • Fuel injector connectors
    • ECM ground terminal
    • Negative battery cable
17. Fill the engine with oil and coolant.
18. Start the engine and check for leak
    

Bolts in the center of the cams 28.2 ft/lbs
Bolts on the outside of the cams 15.9ft/lbs
INSTALLATION
1. Cylinder head cover.
1) Install the cylinder head cover gasket to cylinder
head cover.
3) Apply liquid gasket (TB1207B or equivalent) to
the rubber seal of the camshaft end, injector
harness gasket area and No. 1 camshaft
bracket.
4) Tighten cylinder head cover fixing bolts
Torque : 9 N·m (0.9 kg·m/6.5 lb ft)