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BUSY BOLTERS Are you one?  The Shop Area
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Jul 21st, 2025 | | 
#59501 04/22/2006 12:25 AM | Joined: Apr 2006 Posts: 36 Junior Member | | Junior Member Joined: Apr 2006 Posts: 36 | I need to replace the rear seal on my transmission. I beleive it is a Muncie MM420. The seal is an O ring (about 3-4 inches in diameter) that keeps the fluid from getting out of the tail housing and on the torque tube. Checked several parts houses including large NAPA store and Novaks with no luck.
Any suggestions? | | |
#59502 04/22/2006 10:54 PM | Joined: May 2004 Posts: 45 New Guy | | New Guy Joined: May 2004 Posts: 45 | John,
Most of the truck resto places like Chevy Duty, Jim Carters, etc. have a transmission gasket set that includes the gasket your looking for. I'm surprised you had no luck from Novaks, they should have had them.
Ed Fallon
In seemlingily endless process of restoring a stock 1953 chev 3100 pickup.
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#59503 04/23/2006 2:06 AM | Joined: Apr 2006 Posts: 36 Junior Member | | Junior Member Joined: Apr 2006 Posts: 36 | Thanks Ed. Evidently Novaks does not adapt there trans' to torque tube configurations. I checked the two sites you gave me and it appears they do not have any. I sent them an email to confirm.
Any other suggestions would be appreciated!
John | | |
#59504 04/23/2006 2:30 AM | Joined: Mar 2004 Posts: 3,068 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 3,068 | Usually you can get a part number off of the seal and have a parts house order it for you. I does require you to tear it down though,
Scott | | |
#59505 04/23/2006 3:48 AM | Joined: Oct 2003 Posts: 363 Member | | Member Joined: Oct 2003 Posts: 363 | You need to call Jim Carters. The website and catalog are sometimes a little confusing. Any way you can get us a picture of what you are talking about? If it is just an o-ring, that should be easy to find at Motion Industries. You may need to buy the complete transmission overhaul gasket kit for a 4 speed 1/2 ton it should be complete. | | |
#59506 04/28/2006 2:09 AM | Joined: Apr 2006 Posts: 36 Junior Member | | Junior Member Joined: Apr 2006 Posts: 36 | Anyone have a number for Jim Carter? | | |
#59507 05/02/2006 1:53 AM | Joined: Apr 2006 Posts: 36 Junior Member | | Junior Member Joined: Apr 2006 Posts: 36 | Jim Carter's could not help me along with a strin of other folks that distribute old truck pats so I called Patricks this afternoon. They say that what I need, whichh they have is a Ball Seal Kit. They are sending me the parts I'll let everyone know if this works. Thanks for the suggestions. | | |
#59508 05/10/2006 9:53 PM | Joined: Apr 2006 Posts: 36 Junior Member | | Junior Member Joined: Apr 2006 Posts: 36 | Seal kit found at Patricks. The seal I replaced was rubber, the new seal is cork. If you are rebuilding a Muncie SM420 the kit is from FEL-PRO and the number is ES 72843. | | |
#59509 05/12/2006 1:48 PM | Joined: Oct 2003 Posts: 363 Member | | Member Joined: Oct 2003 Posts: 363 | Thanks for posting a follow up John, it makes the archives that much better. | | |
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