SuperB Posted July 8, 2023 Share Posted July 8, 2023 (edited) Does anyone have a part number (Mack or aftermarket) for the cross shaft oil seal on a 1965 B61? The gear box number is 20QC319AP1, and this seal is for the shaft where the pitman arm attaches. The seal has an OD of 2.250" and the shaft diameter is 1.750". Any help would be greatly appreciated. Thanks My parts book only has the parts breakdown for a different box, with a seal number of 364SZ66. This seal OD is too big (2.500"). I was able to find a CR seal that should work. 👍 Edited July 9, 2023 by SuperB Quote Link to comment https://www.bigmacktrucks.com/topic/73029-steering-gear-oil-seal/ Share on other sites More sharing options...
mowerman Posted July 9, 2023 Share Posted July 9, 2023 Sorry, I’m going through the same thing. Good luck…. Bob Quote Link to comment https://www.bigmacktrucks.com/topic/73029-steering-gear-oil-seal/#findComment-534495 Share on other sites More sharing options...
Mackpro Posted July 11, 2023 Share Posted July 11, 2023 Can you figure out what brand steering gear you have ? I have several manuals for the Sheppards and the old TRW /Ross HFB64 and 70 gear boxes. The seal you are locking for they refer it as the sector shaft seals 1 Quote Link to comment https://www.bigmacktrucks.com/topic/73029-steering-gear-oil-seal/#findComment-534639 Share on other sites More sharing options...
mowerman Posted July 12, 2023 Share Posted July 12, 2023 OK thanks right now I’m looking for a rebuild kit with the sector Shaft, bearing I was originally going to look for a rebuilt box, but I really don’t think I need any more than a kit and the bushing Thanks for all your information…. Bob Quote Link to comment https://www.bigmacktrucks.com/topic/73029-steering-gear-oil-seal/#findComment-534660 Share on other sites More sharing options...
SuperB Posted July 16, 2023 Author Share Posted July 16, 2023 I had bolted the box back into the truck before I saw your message Mackpro. The only info I got off of it beforehand was "GEMMER" and "7DC06". I used a CR 17231 seal, which seemed to be a good replacement for it. It was only a single lip seal unfortunately, but I think it will last as long as I do 1 Quote Link to comment https://www.bigmacktrucks.com/topic/73029-steering-gear-oil-seal/#findComment-535001 Share on other sites More sharing options...
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