Thread: TH400 Questions
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Old 05-02-2022, 09:42 PM   #1
ThreeQuarter
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Join Date: Jun 2000
Location: Texan in Iowa
Posts: 2,517
TH400 Questions

1. If I pull the slip yoke out of my TH400's 2wd tail housing, should I lose a little fluid?
- I'm parked on a level slab and my pickup is at factory height & stance.
- I pulled my slip yoke and only got a few drips from the yoke, nothing flowed over the rear seal.
- Dipstick has been consistently reading full when hot. I think I am using the right dipstick and tube combo, but how can I know for sure?
- The transmission seems to have been driving fine.

2. My slip yoke was new & shiny when I installed it, and after 2000 miles in my transmission it now has rust around the end. I think that's not normal--what could be happening here?
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Ben
'68 Chevy C10 Custom LWB 327/TH400 2nd owner
'16 GMC Sierra 1500 SLE Dblcab 4wd 5.3
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