New timing belt jumps teeth

Tiny
BLAKESLIST
  • MEMBER
  • 1998 TOYOTA CAMRY
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 190,000 MILES

Old timing belt worked fine.

When turning the crankshaft gear to recheck that that timing marks are lined up, the belt jumps teeth.
I was unable to get the belt on tight enough and manually turning the crankshaft to recheck timing marks would result in the belt jumping teeth via the crankshaft gear.

I purchased a timing belt and water pump kit online and the idler, tensioner and water pump pulley was bigger than the old ones and I returned it twice.
I found one with the correct dimensions locally. The newest kit has 2 springs with confusing instructions, but I tried both springs and have the same tooth jumping problem.

My next step is replace the crankshaft gear because there is about a.0015 inch, so the crankshaft rocks a very tiny amount.

Does anyone know what could be causing the belt to jump?
Also, does anyone know the spec on the tensioner spring dimension, 42mm or 46mm?
Do you
have the same problem?
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No
Monday, July 29th, 2019 AT 5:36 PM

15 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome to 2CarPros.

Here are the tensioner spring specs:

TIMING BELT TENSIONER
Tension Spring:
Free Length. 46.0 mm (1.811 inch)
Installed Tension:
At 50.5 mm (1.988 inch). 32 - 37 N (7.2 - 8.3 lbs.)

__________________________________

The only thing I can think of is the belt isn't tight enough, there is some type of interference causing the cam to stop, or if you are turning the crank counter clockwise, this can happen.
You should only turn it clockwise

I am going to provide the directions for belt install for you to review. See if there is anything you have done differently that may be causing the issue. The attached pictures correlate with the directions.

_________________________________

1998 Toyota Camry CE Sedan L4-2164cc 2.2L DOHC MFI
Timing Belt Installation
Vehicle Engine, Cooling and Exhaust Engine Timing Components Timing Belt Service and Repair Procedures Timing Belt Replace Timing Belt Installation
TIMING BELT INSTALLATION

pic 1

pic 2

INSTALLATION
1. Install oil pump pulley.
A. Align the cutouts of the pulley and shaft, and slide on the pulley.

Pic 3

b. Using Special Service Tool (SST) 09960 - 10010 (09962 - 01000, 09963 - 00500) or equivalent, install the pulley nut.

Torque: 24 Nm (18 ft. Lbs.)

pic 4

2. Install crankshaft timing pulley.
A. Align the timing pulley set key with the key groove of the pulley.
B. Slide on the timing pulley, facing the angle sensor inward.

NOTICE: Do not scratch the angle sensor of the timing pulley.

Pic 5

3. Install No.2 idler pulley.
A. Install the pulley with the bolt.

Torque: 42 Nm (31 ft. Lbs.)

HINT: Use the 35 mm (1.38 inch) long bolt.

B. Check that the idler pulley moves smoothly.

Pic 6

4. Temporarily install No.1 idler pulley and tension spring.
A. Align the bracket pin hole with the pivot pin.
B. Install the pulley with the bolt. Do not tighten the bolt yet.

HINT: Use the 42 mm (1.65 inch) long bolt.

C. Install the tension spring.

Pic 7

d. Pry the pulley toward the left as far as it will go, and tighten the bolt.
E. Check that the idler pulley moves smoothly.

Pic 8

5. Temporarily install timing belt.

NOTICE: The engine should be cold.

A. Using the crankshaft pulley bolt, turn the crankshaft and align the timing marks of the crankshaft timing pulley and oil pump body.

Pic 9

b. Remove any oil or water on the crankshaft pulley, oil pump pulley, water pump pulley, No.1 idler pulley and No.2 idler pulley, and keep them clean.
C. Install the timing belt on the crankshaft timing pulley, oil pump pulley, No.1 idler pulley, water pump pulley and No.2 idler pulley.

HINT:
When re-using timing belt: Align the points marked during removal, and install the belt with the arrow pointing in the direction of engine revolution.

Pic 10

6. Install timing belt guide.
Install the guide, facing the cup side outward.

Pic 11

7. Install No.1 timing belt cover.
A. Check that the timing belt cover gasket has no cracks or peeling, etc.
If the gasket has cracks or peeling, etc, replace it using these steps:
1) Using a screwdriver and gasket scraper, remove all the old gasket material.
2) Thoroughly clean all components to remove all the loose material.
3) Remove the backing paper from a new gasket and install the gasket evenly to the part of the timing belt cover shaded black in the illustration.
4) After installing the gasket, press down on it so that the adhesive firmly sticks to the timing belt cover.

Pic 12

b. Install the timing belt cover with the 4 bolts.
C. Install the clamp of the crankshaft position sensor wire to the timing belt cover.
D. Install the crankshaft position sensor wire to the clamp on the timing belt cover.
8. Install crankshaft pulley.
A. Align the pulley set key with the key groove of the pulley, and slide on the pulley.

Pic 13

b. Using (SST) 09213 - 54015 (91651 - 60855), 09330 - 00021 (and bolt), install the pulley bolt.

Torque: 108 Nm (80 ft. Lbs.)

HINT: Either of 2 types of pulley may be used, each with its own bolt size, type A and type B.

9. Install camshaft timing pulley.
A. Align the camshaft knock pin with the knock pin groove of the pulley, and slide on the timing pulley.

Pic 14

b. Using (SST) 09249 - 63010, 09960 - 10010 (09962 -01000, 09963 - 01000), install the pulley bolt.

Torque: 54 Nm (40 ft. Lbs.) 37 Nm (27 ft. Lbs.) For use with SST

HINT: Use a torque wrench with a fulcrum length of 340 mm (13.39 inch).

10. Set No.1 cylinder to Top Dead Center(TDC)/Compression.

Pic 15

a. Turn the crankshaft pulley, and align its groove with timing mark "0" of the No.1 timing belt cover.

Pic 16

b. Using (SST) 09960 - 10010 (09962 - 01000, 09963 - 01000) turn the camshaft, and align the hole of the camshaft timing pulley with the timing mark of the bearing cap.

11. Connect timing belt to camshaft timing pulley.

Pic 17

HINT:
When re-using timing belt: Check that the matching marks of the timing belt and the No.1 timing belt cover meet.

If the matchmark does not align, shift the meshing of the timing belt and crankshaft timing pulley until they align.

Pic 18

When re-using timing belt: Align the matchmarks of the timing belt and camshaft timing pulley.

Pic 19

a. Remove any oil or water on the camshaft timing pulley, and keep it clean.
B. Connect the timing belt to the camshaft timing pulley, and checking the tension between the crankshaft timing pulley and camshaft timing pulley.
12. Check valve timing.

Pic 20

a. Loosen the No.1 idler pulley bolt 1/2 turn.
B. Slowly turn the crankshaft pulley 2 revolutions TDC to TDC.

Pic 21

NOTICE: Always turn the crankshaft pulley clockwise.

Pic 22

c. Check that each pulley aligns with the timing marks as shown in the illustration.
If the timing marks do not align, remove the timing belt and reinstall it.

Pic 23

d. Slowly turn the crankshaft pulley 1 and 7/8 revolutions, and align its groove with the mark at 45 Before Top Dead Center (BTDC) (for No.1 cylinder) of the No.1 timing belt cover.

NOTICE: Always turn the crankshaft pulley clockwise.

Pic 24

e. Tighten the mounting bolt of the No.1 idler pulley.

Torque: 42 Nm (31 ft. Lbs.)

pic 25

13. Install No.2 timing belt cover.
A. Check that the timing belt cover gaskets have no cracks or peeling; etc.
If the gasket has cracks or peeling, etc, replace it using these steps:
1) Using a screwdriver and gasket scraper, remove all the old gasket material.
2) Thoroughly clean all components to remove all the loose material.
3) Remove the backing paper from a new gasket and install the gasket evenly to the part of the timing belt cover shaded black in the illustration.
4) After installing the gasket, press down on it so that the adhesive firmly sticks to the timing belt cover.

Pic 26

b. Install the belt cover with the 4 bolts.
C. Install the engine wire clamp.
14. Install spark plugs.
A. Install the 4 spark plugs.
B. Connect the 4 high-tension cords to the spark plugs.
C. Install the 4 high-tension cords to the clamps on the cylinder head cover.
15. Install No.2 RH engine mounting bracket.

Pic 27

a. Install the mounting bracket with the 3 bolts.
B. Alternately tighten the 3 bolts in several passes.

Torque: 52 Nm (38 ft. Lbs.)

16. Install engine moving control rod.

Pic 28

a. Temporarily install the control rod with the 3 bolt.
B. Alternately tighten the 3 bolts in several passes.

Torque: 64 Nm (47 ft. Lbs.)

17. Connect ground strap connector.
18. Install PS pump drive belt.

Pic 29

Install the drive belt with the 2 bolts.
19. Install RH front fender apron seal.
20. Install RH front wheel.
21. Install generator.

__________________________________

Let me know if any of this helps or if you have other questions.

Take care,
Joe
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Monday, July 29th, 2019 AT 8:53 PM
Tiny
SCGRANTURISMO
  • EXPERT
Hello,

In the diagrams down below I have included the factory step by step instructions for the installation of the timing belt on your vehicle. Please go through it and get back to us with how everything turns out.

Thanks,
Alex
2CarPros
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Monday, July 29th, 2019 AT 8:55 PM
Tiny
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Joe and Alex, thanks for the response.
I've done exactly all those instructions many times.
Just last month, I did the same timing belt job on a 1999 Camry 2.2L without issue.
Do you think any play in the crankshaft gear could cause the belt to jump teeth while manually turning it?
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Monday, July 29th, 2019 AT 9:16 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome back:

Anything that allows play in the belt can cause it. Have you checked spring tension based on the specs I provided?

Let me know.

Joe
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Monday, July 29th, 2019 AT 9:24 PM
Tiny
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Hi Joe,
The 2 springs that came with the kit are 42mm and 46mm inside hook to hook lengths. The old spring is 51mm.
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Monday, July 29th, 2019 AT 9:26 PM
Tiny
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Hi Joe,
I typed the wrong dimension of the old tensioner spring in my last reply.
The dimension of the old tensioner spring is 42.5mm.
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Tuesday, July 30th, 2019 AT 6:36 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Is that the same one you used? (Size)?
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Tuesday, July 30th, 2019 AT 10:10 AM
Tiny
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I tried both springs and had the same problem. I think I figured out where I went wrong. I never put the bottom timing belt cover on when turning the crankshaft to make sure timing marks stayed aligned. I think you have to have that cover on to keep belt slack from causing the belt to jump. I wasn't putting the cover on because I was using the crankshaft alignment marks instead of the marks on the bottom cover.
I will let you know if all works now.
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Tuesday, July 30th, 2019 AT 11:03 AM
Tiny
BLAKESLIST
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Okay, putting on the bottom cover with guide washer doesn't fix the problem. The belt still jumps teeth when turning the crankshaft manually. I replaced the crankshaft gear and all is nice and tight. There is no way that the 46mm spring would work because it could pop off. It is too long. I don't have a tension guage to test the 42mm spring tension.
Does it matter if you remove all 4 spark plugs? I have never done that before and had no problems.
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Tuesday, July 30th, 2019 AT 1:23 PM
Tiny
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Alright, after much discouragement, I decided to take out 3 of the spark plugs and now, the belt doesn't jump. I am guessing that there maybe too much carbon build up in the combustion chambers causing the belt to jump from the pressure. The problem is I did it with the 46mm spring. I don't know for sure if I should be using the 46m or the 42mm spring?
The 46mm spring has 14 coil turns and both the old spring and the 42mm new spring has 13 coil turns.
If I can just get confirmation on the spring length, I can wrap this job up and get the car back to my friend.
Any help on this would be much appreciated.
Thanks in advance.
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Tuesday, July 30th, 2019 AT 4:23 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome back:

The OEM spring specs are above. Here they are:

Welcome to 2CarPros.

Here are the tensioner spring specs:

TIMING BELT TENSIONER
Tension Spring:
Free Length. 46.0 mm (1.811 inch)
Installed Tension:
At 50.5 mm (1.988 inch). 32 - 37 N (7.2 - 8.3 lbs.)

Is that what you needed? If not, let me know.

Joe
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Tuesday, July 30th, 2019 AT 5:50 PM
Tiny
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Yes, that is exactly what I needed. I know you posted it earlier, but I needed to make sure. Thanks again, Joe!
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Tuesday, July 30th, 2019 AT 6:00 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
You are very welcome. Let me know what you find. I would really like to know what you determine to be the cause.
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Tuesday, July 30th, 2019 AT 6:03 PM
Tiny
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Hi Joe,
Sorry, forgot to come back and let you know how it worked out.
The car runs great and everything worked well.

The reason I suspected carbon build up was because I just barely snugged the tensioner down and when manually turning the crankshaft, the belt would not jump teeth. I used a flash light to look into the spark plug hole and could see carbon on the piston, so thinking about the instructions you gave me from Toyota and removing the spark plugs gave me the idea to try that.
After loosening the tensioner and removing the plugs, the belt would not jump teeth when turning the crankshaft. This allowed me to turn the crankshaft the 1 and 7/8 of a turn past TDC with the tensioner loose, so that I could torque it to 31 ft lbs. It worked perfectly.
Thanks again.
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Saturday, August 3rd, 2019 AT 4:20 AM
Tiny
JACOBANDNICKOLAS
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Welcome back:

You are very welcome. I'm glad you got it taken care of. Let us know if you need anything in the future.

Take care and hope you are enjoying your weekend.

Joe
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Saturday, August 3rd, 2019 AT 8:43 PM

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