Balance shaft timing and noise?

Tiny
ROJ TUP
  • MEMBER
  • 2008 TOYOTA CAMRY
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
I am hearing; clak, clak, clak, clak, clak cool engine run. And quieted after ten to twenty minutes. 2az fe. I remove balance shaft to check
1. Balance shaft no1. Driven( resin, polymer)gear no1. Can be rotating(no fixe) about 1/2 - 1 teeth.
****This is cause of noise?
2. Diameter Journal shaft no1. (Gear, mass) 22.95, 22.94 mm
Thickness bearing 1.46 mm all
Diameter journal shaft no2.
(gear, mass) 22.96, 22.95 mm
Thickness bearing 1.46 mm all

Spec mark 2 22.985-23.000mm
Bearing thickness 1.489 - 1.492mm
****This is cause of noise?

3. Thrust clearlance not measure.(I thing over spec to.)
****This is cause of noise?

4. Gear clearance steel with resin.
This is cause of noise?
5. Bearing side has mark 1, 2, 3. Use for? My engine mark on stiffening crankcase is 2222.
Can use mark3 repleace mark2?
Now I have new bearing mark2 √ó 8.
I hope do not hear clak noise or better reduce the noise.

Please. Thank you very much.
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Wednesday, July 18th, 2018 AT 6:10 AM

32 Replies

Tiny
KEN L
  • ADMIN
Hello,

Thanks for the video and diagrams to help us see what you are talking about. The balance shaft with the two gears looks like it is causing the issue it should not move that much. I would replace the unit and reassembly.

Please let us know what happens.

Cheers, Ken
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Thursday, July 19th, 2018 AT 11:30 AM
Tiny
ROJ TUP
  • MEMBER
Thank you so much. Ken
Every thing okay. Not noise.(Clark clark clark)
It is sound of impact the two gear can move. And have vibration because timing not Constant it relative motion with driven gear some degree of rotating.
When the engine so hot the two gear a hard moving (expanded material) causing reduce of the noise or not sound.
If incorrect tell me please.
Thank you very much. Roj
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Saturday, July 21st, 2018 AT 9:44 PM
Tiny
ROJ TUP
  • MEMBER
If not repleace it is crack the next time and block suction pipe of oil pump. I search car garage acv40 has ploblem the balance shaft about 150000 + km.
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Sunday, July 22nd, 2018 AT 12:22 AM
Tiny
KEN L
  • ADMIN
When you have the engine apart grab each one of the rods and try to move them on the crank you may have a spun rod bearing as well. Can you take a video of the noise so I can hear it? Upload it here in your response. Also, look at the timing chain guides a loose chain can cause this as well.
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Sunday, July 22nd, 2018 AT 12:02 PM
Tiny
ROJ TUP
  • MEMBER
Before:
In the moring have the noise and louder when shift the gear handle to "D" o, "R" or A/C on.
After:
"D" and A/C on
Fixed two gear balance shaft. (I see a closed area safe for testing. I do not want to say that. Super glue.)
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Monday, July 23rd, 2018 AT 10:26 PM
Tiny
ROJ TUP
  • MEMBER
Before:
In the morning.
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Monday, July 23rd, 2018 AT 10:56 PM
Tiny
KEN L
  • ADMIN
Man, that is not messaging around. Please remove the serpentine belt and recheck. If the same that noise sounds more like a chaining chain issue. Also, does the noise change or go away when you put the car in gear or reverse? You replaced the balance shaft unit correct?
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Tuesday, July 24th, 2018 AT 11:06 AM
Tiny
ROJ TUP
  • MEMBER
Sorry I am not upload video after replace balance shaft.
Okay I can.
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Tuesday, July 24th, 2018 AT 7:09 PM
Tiny
KEN L
  • ADMIN
Yep, that sounds like you have a timing chain that is stretched and tension-er that is not working or the guide that is broken. I assume it makes the same noise with the serpentine belt off. Here are diagrams to show you what you are in for when doing the job.

Check out the diagrams (below). Please let us know what happens.

Cheers, Ken
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Wednesday, July 25th, 2018 AT 2:32 PM
Tiny
ROJ TUP
  • MEMBER
Thank you so much ken. That all very nice for me.
The last week I see tensioner chain of oil pump is not center. I don'n know it correct position or not.
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Wednesday, July 25th, 2018 AT 8:04 PM
Tiny
ROJ TUP
  • MEMBER
I agree with you. I just heard new noise. At 1,000 rpm to 1,250 rpm peak noise. L have video to see tension-er chain. The next time I just remove cover valve to see timing chain.
Thank you.
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Thursday, July 26th, 2018 AT 3:56 PM
Tiny
KEN L
  • ADMIN
The guide that is off is where I would look first it is supposed to be perfectly aligned. I would take off the timing cover so we can look to see what is going on. We are getting closer. :)
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Thursday, July 26th, 2018 AT 4:11 PM
Tiny
ROJ TUP
  • MEMBER
Today I check valve clearance it okay.
And check timing chain not okay.
Check tensioner chain I may be found cause of issue.
1. Tension-er not work it too loose and leak oil.
2. Is the tensioner too loose?
One time I heard chain is stumber (. Gakk.) When cam gear rotating. I am ever hear few time in idle speed. Now I know that right.
First I just replace tension-er chain.
If Ihave a time just replace timing chain the car garage.
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Tuesday, July 31st, 2018 AT 12:38 PM
Tiny
KEN L
  • ADMIN
It sounds like you found the problem get the guides, chain and tension-er. Also, you you made sure the oil pump pick up is clear?
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Wednesday, August 1st, 2018 AT 11:43 AM
Tiny
ROJ TUP
  • MEMBER
Vdo.
Now I order tension-er chain it coming soon. First test.
Oil pump I do suction pipe.
Thank you so much, Ken.
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Wednesday, August 1st, 2018 AT 9:16 PM
Tiny
KEN L
  • ADMIN
Yes, everything in those videos looks worn and needs to be replaced. Make sure the oil pick up is clear, I would take it off and clean it thoroughly.
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Thursday, August 2nd, 2018 AT 9:01 AM
Tiny
SIXTY9TANG
  • MEMBER
  • 2003 TOYOTA CAMRY
  • 135,000 MILES
Just rebuilt engine cannot find timming details for installing the contra rotating balance shafts. Is a 2.4l, balance shaft assembly bolts up under crank shaft and is driven by a gear attached to the crank.
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Friday, November 27th, 2020 AT 9:18 AM (Merged)
Tiny
HMAC300
  • EXPERT
I think what i'e sent is what you need it's all we have. We do have another with a paint mark but not sure that is it.
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Friday, November 27th, 2020 AT 9:18 AM (Merged)
Tiny
SIXTY9TANG
  • MEMBER
The picture on the left is of the timing chain and cam gears; I have info. On them. The picture in the middle appears to be a similar set up to the one on my car. The picture on the right is not the same set up, maybe from an earlier year. Still no help though.I need detailed info. [ Is the crank set at TDC for instance]. The balance shaft gears have 2 marks on each gear and they are not identical and I need to know were they need to be positioned in relation to each gear and the crank shaft position.I have a HAYNES repair manual 2002-2006. It doesn't even mention a balance shaft. The 2007-2011 shows detail of a balance shaft, but it is different. The manual for the years before 2002 also mention a balance shaft but it is chain driven.I have checked a chilton's manual with similar results.I have searched the web to no avail so far. Any help I appreciate.

Thanks
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Friday, November 27th, 2020 AT 9:18 AM (Merged)
Tiny
HMAC300
  • EXPERT
The last pic is a balance shaft and the dots need to line up the center pic is the balance shaft gears installed if you look closely there are a cople more dots that look like they line up with something on the drawing. Unfortunately this is all we have oin our manuals so i'm sending what we had.
Hereare instructions maybe this will help.
Installation

1. Rotate¬ the¬ driven¬ gear¬ No.¬ 1¬ of¬ balanceshaft¬ No.¬ 1¬ for¬ the¬ rotating¬ direction¬ until¬ it¬ hits¬ the¬ stopper.
2. Confirm¬ that¬ the¬ matchmarks¬ on¬ driven¬ gear¬ No.¬ 1¬ and¬ No.¬ 2¬ are¬ matched.

Fig.¬ 32:¬ Matching¬ Matchmarks
Courtesy¬ of¬ TOYOTA¬ MOTOR¬ SALES, ¬ U.S.A, ¬ INC.

3. Align¬ the¬ timing¬ marks¬ of¬ the¬ No.¬ 1¬ and¬ No.¬ 2¬ balanceshafts¬ as¬ shown.
4. Place¬ the¬ No.¬ 1¬ and¬ No.¬ 2¬ balanceshafts¬ on¬ the¬ crank¬ case.
5. Apply¬ a¬ light¬ coat¬ of¬ engine¬ oil¬ under¬ the¬ heads¬ of¬ the¬ balanceshaft¬ housing¬ bolts.

Fig.¬ 33:¬ Aligning¬ Timing¬ Marks
Courtesy¬ of¬ TOYOTA¬ MOTOR¬ SALES, ¬ U.S.A, ¬ INC.

6. Uniformly¬ tighten¬ the¬ 8¬ bolts¬ in¬ the¬ sequence¬ shown.

Torque:¬ 22¬ N.M¬ (220¬ kgf. Cm, ¬ 16¬ ft. Lbf)

HINT:

The¬ balanceshaft¬ housing¬ bolts¬ are¬ tightened¬ in¬ 2¬ progressive¬ steps.

Fig.¬ 34:¬ Tightening¬ Balanceshaft¬ Housing¬ Bolts¬ In¬ Sequence
Courtesy¬ of¬ TOYOTA¬ MOTOR¬ SALES, ¬ U.S.A, ¬ INC.

7. Mark¬ the¬ front¬ side¬ of¬ each¬ balanceshaft¬ housing¬ bolt¬ head¬ with¬ paint.
8. Retighten¬ the¬ bolts¬ by¬ 90¬ ¬ as¬ shown.
9. Check¬ that¬ the¬ painted¬ marks¬ are¬ now¬ at¬ a¬ 90¬ ¬ angle¬ to¬ the¬ front.

Fig.¬ 35:¬ From¬ Front¬ Position¬ Turn¬ Paint¬ Marked¬ Bolt¬ 90¬
Courtesy¬ of¬ TOYOTA¬ MOTOR¬ SALES, ¬ U.S.A, ¬ INC.
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Friday, November 27th, 2020 AT 9:18 AM (Merged)

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