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#1 |
Active Member
![]() Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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3 speed manual tranny question...
My 68 GMC with Saginaw is losing gear oil from the rear extension housing. I replaced the seal a few months back, but I noticed it's still leaking. The transmission person told me I may also have a worn mainshaft bushing. This is the one inside the housing that requires a special tool to remove and install.
Question: Can the rear housing be removed without removing the whole transmission from the truck? |
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#2 |
Active Member
![]() Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
|
Re: 3 speed manual tranny question...
I guess I'm not the only one that's not very familiar with the three speed tranmissions. But, I did find out what the problem was.
I removed the drive shaft and the cap that plugs the hole in the slip yoke shaft was missing! I'm glad I noticed the leak before I burned my transmission. I went to a local tranmission repair shop and the they just happened to have a new yoke. The owner said he's seen a lot of them lose the cap plug. Also mentioned that you can repair them with a freeze plug cap but you have to find the right size one and grind it down, etc. Mine was pitted and had grooves on the surface so I just went ahead and bought the new one. |
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#3 |
Hollister Road Co.
Join Date: Apr 2005
Location: Houston
Posts: 6,134
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Re: 3 speed manual tranny question...
It also needs a pin hole in the center of the plug so it doesn't pop the plug out when the yoke moves in and out.
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