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| | | Joined: Aug 2010 Posts: 8 New Guy | | New Guy Joined: Aug 2010 Posts: 8 | I have a 66C10 with a 3 speed Saginaw. The truck sat for a long time until I obtained it and now it runs. However, it apprears the seals in the transmission must have dry rotted. It leaks around the output shaft (far back), the shifter shafts, and the speedometor shaft. I'm most concerned about the seal at the back as it leaves a puddle and the transmission stays low. I obtained a new seal which fits over the end right where the drive shaft yoke is inserted and it still drips like before.
Anyone who can provide wise counsel is appreciated. I really do not want to rebuild the tranny. Thanks
Last edited by zanemobile; 03/11/2011 6:48 PM.
| | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Did you replace the seal or just the dust boot?
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Apr 2005 Posts: 2,097 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,097 | The rear output bushing is likely worn so the seal isn't doing much to stop the leak. You can replace it by removing the trans rear housing or by using a specialty tool for removing/installing the bushing if you can find or make one.
Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine
| | | | | Joined: Jan 2010 Posts: 45 'Bolter | | 'Bolter Joined: Jan 2010 Posts: 45 | Check the yoke. Sometimes a groove develops, and then you will always have a leak. Need another yoke then. Also, check to see if there is a vent and if it is clooged. This can make pressure build up and cause a leak. | | | | | Joined: Aug 2010 Posts: 8 New Guy | | New Guy Joined: Aug 2010 Posts: 8 | Thanks for the info. I think all I replaces was the dust boot. I did repalce the yoke so I'm thinking the rear output bushing must be the culprit. I'll check the vents too. | | |
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