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Ron Ruohomaki Posted on Nov 27, 2015
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Need to know how to set the timing marks for the camshaft gear & crankshaft gear

1988 Jeep Comanche 4.0L Renix engine.

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fred_therese

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  • Posted on Nov 27, 2015
fred_therese
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I would say that you line the marks up together between the gears. One gear should have two mars and the other gear should have one mark put the one mark between the two marks

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1answer

How do you adjust valves on a 2006 3.5L V6 Toyota Avalon?

There is a Toyota Technical Service Bulletin issued for this:-
T-SB-0291-08 September 11, 2008 2GR-FE Valve Timing

Procedure Service Category Engine/Hybrid System Section Engine Mechanical Market USA Applicability YEAR(S) MODEL(S) ADDITIONAL INFORMATION 2005 - 2009 Avalon 2007 - 2009 Camry VDS(s): BK46K 2008 - 2009 Highlander 2006 - 2009 RAV4 Engine(s): 2GR VDS(s): BK31V, BK32V, BK33V, BK34V, ZK31V, ZK32V, ZK33V, ZK34V, ZK35V 2007 - 2009 Sienna Introduction This service bulletin provides information regarding valve timing inspection and service guidelines for vehicles equipped with 2GR-FE engines. © 2008 Toyota Motor Sales, USA Page 1 of 5 T-SB-0291-08 September 11, 2008 Page 2 of 5 2GR-FE Valve Timing Procedure Introduction (Continued) Figure 1. 3 2 1 5 9 8 7 6 4 1 RH Bank Intake Camshaft Timing Gear 2 RH Bank Exhaust Camshaft Timing Gear 3 RH Bank No. 2 Timing Chain 4 Crankshaft 5 Idler Gear 6 Timing Chain 7 LH Bank No. 2 Timing Chain 8 LH Bank Exhaust Camshaft Timing Gear 9 LH Bank Intake Camshaft Timing Gear Warranty Information OP CODE DESCRIPTION TIME OFP T1 T2 N/A Not Applicable to Warranty © 2008 Toyota Motor Sales, USA T-SB-0291-08 September 11, 2008 Page 3 of 5 2GR-FE Valve Timing Procedure Inspection 1. Set the No. 1 cylinder to TDC/compression. A. Set the timing mark to 0 on the timing chain cover by rotating the crankshaft clockwise. B. Verify the timing marks on the camshaft timing gears are in general alignment with the timing marks of the camshaft bearing cap: TIMING MARK IDENTIFICATION CYLINDER BANK INTAKE GEAR MARK EXHAUST GEAR MARK RH Bank (Bank 1) Small Mark Single Line LH Bank (Bank 2) Large Mark Double Line HINT When the engine is correctly timed, the timing marks will NOT perfectly align. Figure 2. Figure 3. RH Bank Exhaust Camshaft Timing Gear 1 2 1 Bearing Cap Timing Mark 2 Gear Timing Mark Figure 4. RH Bank Intake Camshaft Timing Gear 2 1 1 Bearing Cap Timing Mark 2 Gear Timing Mark © 2008 Toyota Motor Sales, USA T-SB-0291-08 September 11, 2008 Page 4 of 5 2GR-FE Valve Timing Procedure Inspection (Continued) Figure 5. LH Bank Intake Camshaft Timing Gear 1 2 1 Bearing Cap Timing Mark 2 Gear Timing Mark Figure 6. LH Bank Exhaust Camshaft Timing Gear 1 2 1 Bearing Cap Timing Mark 2 Gear Timing Mark HINT If the timing marks appear vastly out of alignment, turn the crankshaft one revolution (360 ) clockwise and note the position of the timing marks. Component Removal Guidelines 1. If engine disassembly is required that involves removing the camshafts or timing gears, set the #1 cylinder to TDC compression, wipe away any oil, and mark the following items in relation to each other prior to disassembly: • Timing gears • Timing chain • Timing chain No. 2 NOTE This relationship MUST be maintained. The intake gear is timed in relation to the crankshaft via the timing chain; the exhaust gear is timed in relation to the intake gear via the No. 2 timing chain. © 2008 Toyota Motor Sales, USA T-SB-0291-08 September 11, 2008 Page 5 of 5 2GR-FE Valve Timing Procedure Component Removal Guidelines (Continued) 2. If NEW camshaft timing gears or the No. 2 timing chain are being installed, the two yellow links on the No. 2 timing chain can be used to ensure correct relationship between the intake timing gear and the exhaust timing gear. Figure 7. 1 1 Yellow Link A. Align the paint mark on the timing chain with the intake gear timing mark (to ensure the intake gear is correctly timed to the crankshaft). Figure 8. RH Bank and LH Bank 3 3 4 3 3 4 5 4 5 4 1 2 1 RH Bank 2 LH Bank 3 Yellow Link 4 Gear Timing Mark 5 Timing Chain Paint Mark B. Align the two yellow links on the No. 2 timing chain to the timing marks on
0helpful
1answer

Need to find vacum line to vacume control

no year, wow. USA car not EXPORT? 4.0L sure. the I-6 engine.
my wild guess 1988 to 1992?
the horrid French (POS) Renix system.? (i had 2,and hated both)
(and I love EFI , imagine that)
Renix has no OBD1 tech, no CEL light. no DTC errors ! it sux.
must be scanned only by dealers of they have not lost their tools
most have. long ago. DRB 1?? i forget. wiki RENIX and cry.

open hood yet, and look up and see the USA EPA mANDATED
VACUUM MAP? BINGO.

Why not say what vacuum device you are fiddly with.
we can help with exact facts as inputs not vague.
  1. MAP: sensor
  2. EVAP
  3. PCV
  4. no egr on mine.
  5. FPR
  6. see map below
i found it.

4.0L

25517580-1hblozgbnr4shnlxshnkrcfr-2-0.jpg 2.5L


25517580-1hblozgbnr4shnlxshnkrcfr-2-1.jpg
i cant guess engine and over half the posters here, NEVER SAY.

take body off car, and throw it away
now what is there, BINGO, a drive line. and lots of electrics.
0helpful
1answer

1991 jeep Comanche fule injector diagram

is this not the RENIX injection, french? 88-91
I had 2 , 88s, and know it well. too well, would like to forget it.....
93 is best old year.
no Renix thank almighty
rule 1: renix, ends.
1991 - Chrysler Corporation (then the owners of the Jeep brand replaced the Renix control system with OBD-I-compliant control electronics, the Chrysler HO EFI).
a blessing as scan tools now work.


same as Cherokee which engine the 4 liter, I-6 or the 2.5L?
diagram. of what,?
physical lay out.?
fuel side.?
electrical, ?
all? the FSM covers this, all of it. and on mine the I6 has its own book.

try alldata.com, log in and read. then ask questions.

no posted symptoms.
1: runs bad????
2; got the engine in basket,
3: got car and engine in 3000 pieces.? (done many like this)
4: all this was removed, and want to put it back.?

here it is, if you need bigger , i cant help because FIXYA has no PM mail systems to send you a large photo.

so here is the electrics, this what you want. alldata.com has it. log in.
699b015b-056f-4f8c-9442-4513ea3fcf5b.jpg
0helpful
1answer

89 Jeep Comanche cranks, but has no spark

no spark to all 6 cylinders, or just 2 ????????????????????????
did you check all fuses first??????????
did you check that the CEL lamp glows, key on? MIL lamp?
if not? the main is dead, or fuse dead.(blown)
ok this is the very very old and obscure Jeep Bendix/Renix system.
the hard part is , it is NOT OBD1 engine yet, making diagnosis very hard. and no distributor. (new for MPI)


is yours the 4.0 I-6
and is it the 1 year, MPI engine? WITH MAF SENSOR!!
this is and AIR DENSITY SYSTEM unlike most other jeeps.
1989 - Changed to Renix MPFI. (read 4 injectors now>....)
i owned a 88 Comanche, love it. 200,k miles i drove from 0
other that ISC motor, zero issues. mine was TBI , no MAF.
NO spark.,?
this MPI has a coil pack with 3 coils in side, and uses the famous.
wasted spark design, even my new jeep v6 has this.
the coil is driven by a separate ICM , ignition control module.
The ICM, iis driven by the PCM(ECU)

your car has a CKP sensor (crank) fitted to the BELL
for the 3 marks, on the flywheel
quote FSM.
The Crankshaft Position Sensor (CKP) is secured by special shouldered bolts to the flywheel/drive plate housing. It is preset in its mounting at the factory and is non-adjustable in the field.
uq:
this means it tunes like a marconi radio, its not a hall sensor...!!!
its just a coil with weak outputs.
is it loose?
id do not know where the CAm CMP sensor is.
the online books mix 5 systems bad, this engine was EFI was
a one year only system. (French)
My wild guess is the CMP is this funny device, on the right
side of engine, where the DIZZY USED to be. called the cam sensor.
that too, must work and i think its a hall sensor and is very easy to test.
sadly no OBD1 and no CEL: flash codes.
to blink out, CMP/CKP dead. cranking
just very old factory scan tool works

again, all spark dead or only 2?
1helpful
1answer

Timing set

Chain

Print


REMOVAL & INSTALLATION

4.3L, 5.0L, 5.7L and 7.4L Engines
See Figures 1, 2, 3, 4, 5 and 6

  1. Remove the timing cover. This will allow access to the timing chain.
  2. Crank the engine until the timing marks on both sprockets are nearest each other and in line between the shaft centers.



0996b43f80219aca.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 1: Crank the engine until the timing marks on both sprockets are in line

  1. On 1996-98 vehicles remove the crankshaft position sensor reluctor ring, if equipped. On 7.4L engines tool J-41371 or its equivalent puller must be used to remove the reluctor ring.
  2. Take out the bolts that hold the camshaft gear to the camshaft. This gear is a light press fit on the camshaft and will come off easily. It is located by a dowel. The chain comes off with the camshaft gear.



0996b43f80219acb.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 2: Remove the camshaft gear retaining bolts


0996b43f80219acc.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 3: Remove the camshaft gear and timing chain
A gear puller will be required to remove the crankshaft gear.
To install:

  1. Without disturbing the position of the engine, mount the new crankshaft gear on the shaft, and mount the chain over the camshaft gear. Arrange the camshaft gear in such a way that the timing marks will line up between the shaft centers and the camshaft locating dowel will enter the dowel hole in the cam sprocket.
  2. Place the cam sprocket, with its chain mounted over it, in position on the front of the truck and pull up with the three bolts that hold it to the camshaft.
  3. After the gears are in place, turn the engine two full revolutions to make certain that the timing marks are in correct alignment between the shaft centers. Tighten the camshaft sprocket bolts (and nut on the 4.3L) to 21 ft. lbs. (28 Nm) on 1988-95 models. On 1996-98 models, tighten the bolts to 18 ft. Lbs. (25 Nm). On the 7.4L, tighten them to 20 ft. lbs. (26 Nm) on 1988-95 models. On 1996-98 models, tighten the bolts to 25 ft. Lbs. (34 Nm).

When installing the crankshaft position sensor you must use install a new oil ring seal onto the sensor.
  1. Install the crankshaft position sensor reluctor ring (if equipped), onto the crankshaft until it is firmly seated against the crankshaft sprocket. On 1996-98 7.4L vehicles replace the reluctor ring with a new component.
  2. Install the front cover, torsional damper, water pump and the radiator.



0996b43f80219acd.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 4: A gear puller will be required to remove the crankshaft gear


0996b43f8020d5d9.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 5: Timing mark alignment-4.3L, 5.0L, 5.7L and 7.4L engines

1helpful
1answer

Need timing marks for 88 dodge ram 50 2.6 liter engine

the camshaft and crankshaft has a small dot on them they go dot to dot
with the crankshaft dot being at 12:00 o clock and camshaft dot at 6:00 o clock
5helpful
1answer

I need to set up the camshaft timing marks on a 1994 mazda b2600

its not just the camshaft timing marks you set up, you also have to have the crankshaft timing mark set right to or you may damage your engine
check the internet for the right timing procedure for you model car ok
0helpful
1answer

How do I set the timing on a 1997 Dodge Neon with a single cam

While this is kinda of tricky but you should like your in it so hears what i know.
To set the timing your looking at two marks, these marks can be defined as a dot an arrow a hash,...you have 1 on the crankshaft gear and the camshaft gear.
Now there should also be a mark on the engine itself again a arrow a hash a dot some marking. so what you want to do is line up defined mark on the toothed wheel with the defined mark on the defined engine mark. this applies to both gears. they must line up. Here's where it gets tricky. You need to be on the compression stroke for cylinder #1. you can buy this at a local auto store. So put everything together....
When you remove the spark plug and put the compression tester in cylinder 1...set your camshaft on the defined marks lining them up then slowly turn your crankshaft, what you looking for is pressure to build in cylinder 1 if nothing develops, take the camshaft and rotate it on full rotation lining the marks again and turn the crankshaft looking for pressure. once you get it make sure you line up your marks and set the belt on good luck hope i helped
1helpful
1answer

Cannot get timing gear off crankshaft to replace- does not have chain.

The gear is press fit onto the camshaft. The proper way to repair it is pull the camshaft and have the gear pressed off and a new one pressed on.
At one time I had made tools to do this job without removing the cam from the engine. I no longer have the tools, they were borrowed and not returned.
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