ricoace

Timing chain removal procedure.

Hello
I have a question. In the Tech note procedure in this forum for replacing the TChain w/o removing the head. Obviously, in the normal procedure you have to remove the head in order to achieve some kind of clearance. In the tech note procedure WHAT are you removing to compensate for NOT removing the head? I am not questioning it of course, I am trying to give myself a" picture" before I tackle this huge job.

Also. it references on some 4x4/IFS trucks you may have to remove the oil pan...WHAT IS IFS please?

Thanks in Advance.
Rick

CyMoN

Ifs is independent front suspension

you can also cheat without removing the IFS by unbolting the motor mounts and jacking the motor up to drop the oil pan the oil sump you have to unbolt with the pan hanging it is a pain but possible to do make sure the engine is held in place with a jack stand if you go the raising it route.

when resembling it and putting the oil pan back on it can be a hassle to get the sump back on and get the sealant on the oil pan don't use the paper gasket !!.

also take note that there is a bolt under the cam sprocket that holds the timing cover to the head.

abecedarian

The timing chain cover is bound on top by the head, and on bottom by the oil pan.
You have to loosen one or the other to get clearance to remove the chain cover.

The bolt CyMoN mentioned is hidden by a persistent puddle of oil near where the distributor gear would be.

pruney81

I would just remove the head and put a new head gasket in there. Because you need to put sealant at the top of the timing cover/block and head gasket. I just did this job on mine and it took me 2 days. Removing the head really isn't that much more work it's just the upper and lower intake and the exhaust manifold.

donomite49

i did not remove oil pan or head to replace timing chain on my 22re.
the trick is to most of the bolts on the oil pan and tap a screwdriver in between to break the seal on the timing chain cover only, then use hi temp silicone on both surfaces to seal.

i changed my timing chain 4 times on my 22r.
each time was about 8 hours. with NO oil leaks btw.