Replacing the timing chain and gears

Tiny
DOUG42190
  • MEMBER
  • 1995 CHEVROLET CAMARO
  • 3.4L
  • V6
  • 2WD
  • AUTOMATIC
  • 158,000 MILES
In the Haynes manual it says to remove the oil pan. Is that required to replace the timing chain and gears? If it is, it is probably worth it to replace the oil pump, too. But I did not expect to have to remove the pan for this job.
Thursday, August 9th, 2018 AT 12:15 PM

9 Replies

Tiny
ASEMASTER6371
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Good afternoon.

The procedure is to remove the pan but you do not. If you loosen the front bolts in the oil pan, it will move down enough to remove and install the cover. It is tight but can be done. I do it all the time.

Roy
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Thursday, August 9th, 2018 AT 1:02 PM
Tiny
DOUG42190
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That sounds good, thank you Roy. Your diagram clearly shows the gaskets for the water pump, the timing cover to block, and the crank seal, but what precautions do I need to take when I put it back together to make sure I do not get an oil leak from the oil pan or from the oil pan/timing cover joint? When I separate them (even if I am careful), am I likely to tear the oil pan gasket? Is there a gasket or seal I should replace between the the pan and cover or do they just butt together? Just apply RTV?
Doug
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Friday, August 10th, 2018 AT 6:22 AM
Tiny
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The oil pan gasket is a thick rubber gasket, not a paper gasket. Put some gray sealer on the bottom of the timing cover when installing.

Clean all the surfaces well and make sure they are clean. A small amount of RTV is good.

Roy
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Friday, August 10th, 2018 AT 1:59 PM
Tiny
DOUG42190
  • MEMBER
  • 23 POSTS
  • 1995 CHEVROLET CAMARO
  • 3.4L
  • V6
  • 2WD
  • AUTOMATIC
  • 158,000 MILES
I had difficulty getting the timing marks on the cam and crank gear lining up. It seems like the cam gear is about half a tooth past bottom dead center. The left side of the chain (passenger side) is tight and straight as an arrow almost touching the center "slack adjuster thing: that has two bolts. The right side looks like it has slack, perhaps too much.
Is it important that each side have the same amount of slack?
Does half a tooth "off" present a problem?
When I took the old timing chain and gears off there was a lot of "saw dust" (little grindings/shavings) for lack of a better term where the chain was tight on the left side and had worn the bottom left corner of that "slack adjuster thing" off. Is it possible to lift the engine enough to remove the pan, replace the oil pump, and clean the pan?
Thank you in advance for your help.
Doug
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Friday, August 24th, 2018 AT 10:24 AM (Merged)
Tiny
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Good morning.

Can you post a picture of the gear alignment?

Half a tooth is not bad and there will be some slack on one side of the chain.

Roy
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Friday, August 24th, 2018 AT 10:24 AM (Merged)
Tiny
DOUG42190
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I will get some pictures tomorrow and post them. What about my oil pan question? Do you have any insight for that?
Thank you,
Doug
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Friday, August 24th, 2018 AT 5:07 PM
Tiny
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Yes you can. The engine will have to be lifted as high as you can get it. The AC compressor and bracket has to come off for enough room for the removal as well.

This will not be easy on the ground.

Roy
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Friday, August 24th, 2018 AT 6:14 PM
Tiny
DOUG42190
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Just to double check with you. This is a 3.4 engine. The one that goes in the traditional forward/backward position, not side to side (transverse?). I am trying to figure out how the AC compressor and bracket are in the way. Not doubting you but just trying to get my head around what I am up against if I try this.
Thank you,
Doug
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Friday, August 24th, 2018 AT 7:07 PM
Tiny
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Yes, that is why it has to go up very high. It needs to clear the cross member.

Roy
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Friday, August 24th, 2018 AT 7:10 PM

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