Timming chain cover seal

GasCan II

Petty Officer 1st Class
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Jul 15, 2010
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281
I have a 1997 5.7 L 350 cu. Bravo II LX .
The crankshaft seal on the timing chain cover is leaking a slight bit . Does this cover need to be removed to change this seal ? I was hoping this seal goes in from the outside of the cover. Am I lucky ?
Thanks
 

achris

More fish than mountain goat
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May 19, 2004
Messages
27,468
If you have an engine serial number we can look up the engine directly and give you a definitive answer. A lot changed in the 1995 to 1997 era with the GM based engines, and one of the things that changed was the timing cover (went from a pressed tin to composite material)....

Chris........
 

GasCan II

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My bad achris , didn't think serial number needed for this one. It's a 1997 350ci. # OK147937.Not at the boat right now but, I'm pretty sure it is metal.
Thanks
 

Villain lll

Cadet
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Jul 11, 2014
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If the front seal is shot, you will need to pull off the harmonic balancer to get to the crank/camshaft cover. Unfortunately, I believe your engine oil pan needs to drop down to access that cover.
Hopefully, you have enough clearance to access without removing or lifting your engine.
 

achris

More fish than mountain goat
Joined
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That's a composite cover (and they are rubbish)... Yes, the seal can be pulled and replaced without removing the cover (which is good because the cover is a one time affair :facepalm:)... As for the seal number, not listed in any of the Merc parts listing. I would pull the seal and take it to a seal shop and have them match it... Way cheaper too ;)

Chris......
 

GasCan II

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Thanks for the reply's. The first nice day we have I will get on it !
Thanks Again !
 

Fun Times

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The composite timing cover front seal GM part number looks to be AC-Delco part number 296-15 or (GM) OEM # 10128316.
http://oemcats.com/oem-parts/10128316.html
http://parts-catalog.acdelco.com/cat...log_search.php ? Catalog Parts Search Results
Vehicle: 2006 CHEVROLET SILVERADO 1500 V6-262ci 4.3L F/I Vin X ID# 33650 New Vehicle

Group / Subgroup: Engine Parts / Individual Gaskets and Seals New Group / Subgroup :: Smart Search



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Parts Matching Your Selection
ACDELCO GM ORIGINAL EQUIPMENT
Crankshaft Front Oil Seal
Part Number: 296-15
Product Notes: Engine Crankshaft Seal
Front ; 61.5MM OD, w/PART# STAMPING ; 1 Per Veh
Per Vehicle: 1; Years: 2002-2006



 
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achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Yep, that's the way I bought my new timing cover and oil pan (direct from GM).... Even with freight, it was a third of what Merc Aust were asking.... :facepalm:
 

netting one

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Mar 23, 2010
Messages
112
When i went to change the seal in mine the cover had a hairline crack in it. might of got away with a bead of silicone but didnt want to chance it. the good thing is the plastic covers you can change the cover without loosing the oil pan. (IMPORTANT!!!!!) when you get your new cover it comes with new shoulder bolts already in the cover, the problem was one of them hit the back of the water pump. i had to grind the head down a little to fit in. i wont even tell you the story there.
 
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