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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jul 2005 Posts: 581 Shop Shark | | Shop Shark Joined: Jul 2005 Posts: 581 | I have a modest leak where the torque tube connects to my old crash box. It looks like it would be a seal or gasket. How difficult is this to repair? Anyone have advice or part numbers? I haven't found much info. by searches and vendor catalogs. | | | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | Is your leak here? ...here... Or there ...there... Or both (like mine) | | | | | Joined: Jul 2005 Posts: 581 Shop Shark | | Shop Shark Joined: Jul 2005 Posts: 581 | Dads50, it is "there" for sure but my tube extends further down to a carrier bearing for the open driveline. I found in a parts book a seal (OEM #348259)referred to as the "universal joint ball collar seal".
I found an illustration of your "here" photo which describes a cork or felt packing washer depending on year. Mine is unique since it is for a 3/4 ton, the part on mine is at the center carrier where the torque tube converts to a drive or open propeller shaft. There is a bearing in the center carrier with an oil seal. Not sure, but for me I think it calls for a 2-19/32"ID seal with OEM #3653618 (Update, I found an interchange part at RockAuto, SKF Part # 25970.)
I'd like to know what the modern parts numbers are, where to get them, and what to expect when repairing them.
Last edited by 641Workmaster; 05/06/2013 1:32 PM.
| | | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | the fel pro number for the ball collar cork seal I used on my 1/2 ton is felpro es-72843 ...pic...(steel washers not included) although I'm not sure if it the same kit for your big bolt. Maybe some can advise? Denny has some good info on his web site for the carrier ...denny web site... After my first attempt at a repair I still experienced a small leak. good luck hopefully someone can give you a kit number | | | | | Joined: Jul 2005 Posts: 581 Shop Shark | | Shop Shark Joined: Jul 2005 Posts: 581 | Thanks! I forgot how thorough Denny is with the pictures. He has the 3/4 ton too! By the way, on your pictures I noticed a grease zerk on the cast member that the bell housing attaches to. I thought the all the innards there used the tranny gear oil?
Last edited by 641Workmaster; 05/06/2013 2:03 PM.
| | | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | I noticed a grease zerk on the cast member that the bell housing attaches to. yeah the fitting has been on there ever since I don't know. It servers no purpose. your right about how it gets lubed. I going to leave the zerk there just to stick it to the establishment.  | | |
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