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Old 06-23-2019, 01:35 PM   #1
MeMongo66
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Default Help! Timing Chain Cover

What am I doing wrong, what do I need to know? I am replacing the timing chain and oil pump on the donor engine before I install it in the car. I can't for the life of me get the timing chain cover back on. Do I really need the tool that the factory manual calls for, or is there a trick that I need to know? For the specifics, it's an 01 DOHC. I thought I had it earlier, I don't want to force it on. Thanks for any help.
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Old 06-23-2019, 01:52 PM   #2
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Default Re: Help! Timing Chain Cover

Pretty sure it's just tight from the alignment dowels and the oil pan lip it needs to slide into. The safe way is to drop the oil pan, that'll involve removing the engine-trans brace too.

The somewhat risky way is to make sure it's on the alignment tabs properly and wack it a few times with a rubber mallet along the oil pan, may help to tilt it into the oil pan groove first then swing it to the alignment tdowels (or just pound the dowels flush with the flange and then it goes on no problem).
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Old 06-23-2019, 02:02 PM   #3
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Default Re: Help! Timing Chain Cover

I'm going to disagree! Negating the function of the dowels is a big invite for crank seal or oil pump problems. I would never do that!

The cover should slip on without any hammering, even if the pan is left tight. I do agree that it is probably a bit easier if you tilt the cover so the pan area goes in first. I assume all the RTV sealant at that pan joint has been cleaned off and the cover is going on with fresh (slippery) RTV there.

PS: Did I read correctly, the engine is out of the car? With the engine out that timing cover job should be rather trivial. It is when it is in the car that it can be a real chore because of limited space to see or work in. Also, I can't think of any need for "special tools" to install that cover. Can you describe what you are referring to about the tool?
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Old 06-23-2019, 02:09 PM   #4
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Default Re: Help! Timing Chain Cover

Quote:
Originally Posted by MeMongo66 View Post
What am I doing wrong, what do I need to know? I am replacing the timing chain and oil pump on the donor engine before I install it in the car. I can't for the life of me get the timing chain cover back on. Do I really need the tool that the factory manual calls for, or is there a trick that I need to know? For the specifics, it's an 01 DOHC. I thought I had it earlier, I don't want to force it on. Thanks for any help.
If you have the OLD crank sprocket then stick it through the cover onto the crank and rotate slowly to line up with and engage the key way, now it all slides into place IF you have cleaned out the dowel holes and cleaned off the dowels.
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Old 06-23-2019, 03:58 PM   #5
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Default Re: Help! Timing Chain Cover

I'm with OldNuc on this one. The old gear is key. That was the first thing I thought of when you mentioned your difficulty.
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Old 06-24-2019, 12:05 PM   #6
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Default Re: Help! Timing Chain Cover

Thanks for the replies, after stepping away from my frustration, I took the old crank gear and put it through the front side, like I had when trying to get the cover installed, it fit just fine, then I tried putting it through the inner side and the oil pump actually have to slide a bit before it would fit. Now it slides right over the crank. So, now I have to clean off the new silicone and do it again.
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Old 07-28-2019, 10:05 PM   #7
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Default Re: Help! Timing Chain Cover

After a few fails, much frustration, I have figured out the source of my problems. The pivoting timing guide, when torqued down, pushes the bottom part out, preventing the oil pump cover from properly seating against the grommets. The bolts from the guides all look the same, so I don't think that is it. Is there a washer or bushing that sits behind it I lost? Suggestions and advice appreciated. Thanks for reading.
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Old 07-29-2019, 07:45 AM   #8
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Default Re: Help! Timing Chain Cover

There is a stepped bolt for that guide, it is all one piece, start looking.
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Old 07-29-2019, 10:12 AM   #9
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Default Re: Help! Timing Chain Cover

That bolt looks like this, the step OldNuc is referring to is what allows the movable guide to pivot. While the guide and bolt are off the engine, test fit the bolt in the guide and make sure it pivots easily, and if it doesn’t, sand down the inside of the guide pivot bit by bit until it swings freely.
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Old 08-03-2019, 10:59 AM   #10
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Default Re: Help! Timing Chain Cover

I just installed the cover for my SOHC.
Even when you use an old crank gear, it's still a challenge.

Finally I had to:
drop the cover in from the top
install the old gear in the front
put a finger through it to align the real gear
slide straight on to the dowels.

Another set of hands would have helped.

It would have been easier if the actual gear teeth part of the crank gear was cut off. The whole thing was too thick to fit between block and fender well
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Old 08-12-2019, 08:26 PM   #11
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Default Re: Help! Timing Chain Cover

Well, this took way too long to accomplish, but the timing chain and cover are now installed correctly. Stepping back and reviewing the process, I had the pivoting guide in the wrong hole. It turns out that there is a tapped hole, same size and thread pitch lower in the block. That is not where it was supposed to be installed. Putting it where it belongs solved the problem. Go figure.
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