04-11-2010, 11:04 AM | #1 |
Registered User
Join Date: Jul 2008
Location: louisville, ky
Posts: 502
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TH 400 leak
Last fall I bought a rebuilt TH400 and an np203 off craigslist. The guy had everything bolted together already, including the crossmember. We just loaded it as a unit with an engine hoist. He said it was "ready to go." I unloaded it with my hoist, set it on some jacks, kicked it under my '79 K20 and bolted it in. Everything works fine, but after using it for a few months now it seems to leak fluid between the trans case and the t-case adapter. I'm starting an axle swap this week, so I might as well fix this too. What seal or gasket is leaking, or what did this guy possibly forget or screw up? I'd like to know what to look for before I get into it. Thanks.
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04-11-2010, 09:06 PM | #2 |
Chevys Kick A$$
Join Date: Jan 2005
Location: Zootown, MT
Posts: 12,699
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Re: TH 400 leak
Are you talking about between the transfercase and tranny there's a gasket that goes in between there you can replace or just use rtv silicone!
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*HOODS is what I answer too* -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!!
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04-12-2010, 09:35 AM | #3 |
Registered User
Join Date: Jul 2008
Location: louisville, ky
Posts: 502
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Re: TH 400 leak
No, the other side. It looks like it is leaking on the front side--the tranny side--of the adapter. I can see the some kind of sealer squeezing out at this spot. But it could be coming from somewhere else. There's quite a bit of fluid down there and it only seems to leak when it is running. Good thing I have a deep pan. I'll know what it is soon enough either way.
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