12 Valve Engine and Drivetrain Talk about the 12V engine and drivetrain here. This is for 1994-1998.5 engine and drivetrain discussion only.

front timing gear cover crack?

Old Oct 26, 2006 | 04:52 PM
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dr.caterpillar's Avatar
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front timing gear cover crack?

I have heard there is a problem with the front timing gear housings cracking and leaking. I was just wondering where on the housing is occurs.
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Old Oct 26, 2006 | 06:17 PM
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JKM
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From: SunnyVale Trailer Park
I don't have a picture handy ( i am sure someone will chime in with one) it occurs on the gear housing similar in location to where your fan hub is , that is the area to look. The crack is caused by a dowl pin than can vibrate out and jam in the timing gears , a bad bad bad situation...
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Old Oct 26, 2006 | 06:55 PM
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From: Montana
Pictures of a typical crack here
http://cumminsdatabase.com/read.php?id=111
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Old Oct 26, 2006 | 06:59 PM
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Originally Posted by dr.caterpillar
I have heard there is a problem with the front timing gear housings cracking and leaking. I was just wondering where on the housing is occurs.
Welcome to DTR

If it ain't broke when you buy it you can "kill the dowel" pin KDP and it won't be a problem. (If it hasn't been done already. ) About a 4 beer, 4 hour job. Pretty easy just wrenching.
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Old Oct 26, 2006 | 07:02 PM
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first thing after getting a 12V is to make sure killer dowel pin gets fixed.

timing cover by itself has no cracking problem, but if KDP backs out. it may or may not destroy your timing cover and/or gears.

cam has to come out to replace timing cover. you don't even want to go there...
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