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HD7GB loader rear engine seal #
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Braswell View Drop Down
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Joined: 14 Feb 2024
Location: North Carolina
Points: 32 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Braswell Quote  Post ReplyReply Direct Link To This Post Topic: HD7GB loader rear engine seal #
    Posted: 20 May 2025 at 8:48am
I have the wet bellhousing and I need seals for the crankshaft . There are 2 separate seals … one facing the engine and the other facing the bellhousing. They are identical National # 77286HC I’ve tried a few places to match them up but I need the Original Allis Chalmers part number for them. All I can find is the seal for a dry bellhousing housing.
Reliance sent a seal they say is a double lip but it sure doesn’t look like one . Any help appreciated or where to find the parts manual
Randy
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Codger View Drop Down
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Joined: 23 Dec 2020
Location: Utopia
Points: 2342 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 20 May 2025 at 10:40am
What is the serial number of the tractor and engine? Four, or six cylinder?
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Lazyts View Drop Down
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Joined: 05 Feb 2012
Location: Manitoba
Points: 632 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Lazyts Quote  Post ReplyReply Direct Link To This Post Posted: 20 May 2025 at 12:45pm
74029500 seal from Minnpar is about $50. Pretty sure the 670 had same rear seal as 685/11000 series.
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AC Mel View Drop Down
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Joined: 23 Jan 2010
Location: N.Ca.
Points: 1183 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AC Mel Quote  Post ReplyReply Direct Link To This Post Posted: 20 May 2025 at 3:04pm
Yes...I concur with Trevor....that part number should be 74029500...available from Minparr.  should be applicable to tractor serial numbers 27201-27950 and 34U27951-up. My parts books do not show any configuration of 2 seals....have no idea of what you might have going on there?  Yes that seal is the same for both the 3500 and 11000 engines
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DMiller View Drop Down
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Joined: 14 Sep 2009
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Points: 33299 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DMiller Quote  Post ReplyReply Direct Link To This Post Posted: 20 May 2025 at 3:55pm
Problem with a Gb is they use a IVECO Engine.  Totally Different Animal.
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AC Mel View Drop Down
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Joined: 23 Jan 2010
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Points: 1183 		Post Options Post Options   Thanks (1) Thanks(1)   Quote AC Mel Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 12:03pm
Dave...The original 7GBs had the 3500....we have 2 of them. I think any GB with an IVECO...probably was put in for a replacement. The dealers were pushing that conversion big time after Fiat took over. We have a 645 with that conversion from the 3500 AC. Actually a pretty good running engine...but have trouble finding parts
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Joined: 14 Sep 2009
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Points: 33299 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DMiller Quote  Post ReplyReply Direct Link To This Post Posted: 17 hours 46 minutes ago at 6:17pm
All the Gb's that I perused around here had Iveco on them.  Back when was having real concerns with the old 7G
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Joined: 23 Dec 2020
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Points: 2342 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 17 hours 34 minutes ago at 6:29pm
The ones I seen of course that were new were IVECO powered. Older ones I seen had the 3500 engine, or the 344, (I think) four cylinder Allis engine.
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