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Go Back   Dodge Cummins Diesel Forum > 1st Gen. Dodge Cummins 89-93 12V Forums > 89-93 Powertrain
89-93 Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect...NO ADVERTISING

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Old 04-11-2010, 08:44 PM   #1 (permalink)
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Timing Gear Housing Gasket

Well today I started out to replace my water pump and while I was in there I figured I'd fix the KDP to and found out why my truck is leaking oil. The person in there before me didn't put the gasket on the back of the timing gear housing on right (Why my truck is leaking oil) or the fix KDP. I've got everything taken off up to the timing gear housing cover. I am wondering how difficult it would be to get to that gasket on the back of the housing. I know you have to take the gears off and then take the bolts off the housing to get to the gasket then put the bolts back in and line them back up but is it a science or could I just make marks on the gears and stick em' all back the way they came out?? I do have a book that will tell me how to get the housing, gears, ect. off and back on . . . but it's not very thorough and I didn't know if any of you guys would know if there is anything with more in depth instructions or if anyone has done this before??
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Old 04-11-2010, 08:58 PM   #2 (permalink)
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dont know, wish i did thow this was exact plan my water pump started seeping on sat
but i figured it would be a good time to do kdp also
my understanding is remove belt, rad, fan, then bolts on timing cover, tighten, new gasket+front seal replace timing cover then water pump, replace fan, rad, belt.
also replace water
in the same boat as you so basicly

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ch
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Old 04-11-2010, 09:28 PM   #3 (permalink)
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Do you have to pull the harmonic balancer?
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Old 04-11-2010, 10:01 PM   #4 (permalink)
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Quote:
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Do you have to pull the harmonic balancer?
yes you do
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Old 04-12-2010, 12:48 AM   #5 (permalink)
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You can't just pull the gears off. The cam gear is pressed on so you would have to pull the whole cam out.
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Old 04-12-2010, 01:05 AM   #6 (permalink)
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There is somewhere on hear that you can remove the cam gear and heat it with a toaster oven to reinstall. Guess dodge dealers are usin heat to put them back on and not pullin the cams anymore.
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Old 04-12-2010, 06:56 AM   #7 (permalink)
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There is no gasket between the aluminum gear case and the front of the block? Is that right? Or maybe it is torn etc?

You really want to pull the cam. That is what the performance shops do as they prefer to not mess around with the liability of a cracked cam gear. It isn't a bad job if you know what to expect.
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Old 04-12-2010, 03:56 PM   #8 (permalink)
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Yeah they try to heat them in place and pull them but alot of times they end up pulling the cam anyway cause you need to heat the gear to atleast 350 and it needs to be gradual heat so it won't crack.
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Old 04-12-2010, 10:08 PM   #9 (permalink)
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There is no gasket between the aluminum gear case and the front of the block? Is that right? Or maybe it is torn etc?
There is a gasket but it's not very well placed



I'm just gona put some special kind of caulking that my dad is going to get and put it around the gasket and call it good because I don't want to take it off. . .
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Old 04-14-2010, 07:01 PM   #10 (permalink)
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any words of advice for removing the bolts on the vibration dampener? {harmonic balancer}
i cant get them to come loose and have no way to keep the motor from rolling back, impact?
ch
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Old 04-15-2010, 12:01 AM   #11 (permalink)
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If you have the fan and radiator off then the Impact might work if it has enough torque . . . but me and my dad got the VD off with a pry bar and an old serpentine belt. You could remove the dust cover and that might give you enough room to be able to hold onto the VD and get the bolts off
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Old 04-15-2010, 09:19 AM   #12 (permalink)
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The method is to remove fan clutch assy. The snap-on tool or a open ended wrech and a pretty good sized hammer works just as well. Then you'll need some tools. 15mm six point in 1/2 inch drive regular depth socket. Then an adapter from 3/4 inch drive to the 1/2. Then a 3/4 inch drive breaker bar. Then that pretty good hammer again.

Very easily done and works quite well. Knock 'em loose and turn them out. I have performed siad KDP tab in many a truck and the above is cake work. You will NOT have to hold the crank from turning.
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