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11-11-2011, 12:37 PM | #1 | |
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transfer case leak
I have a 2003 Silverado 1500 115000 miles 5.3L Auto Trak transfer case. I changed the transfer case fluid and now have a leak at the drain plug. I used teflon tape and it leaked then tried pipe thread compound (pipe dope) and it stills leaks. Is there a special thread sealant or am I over tightening or something.
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11-11-2011, 12:51 PM | #2 | |
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Re: transfer case leak
It's possible the case it cracked at or near the threads, spreading when the plug is installed.
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11-11-2011, 05:32 PM | #3 | ||
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Re: transfer case leak
Quote:
the plugs in the drain case are made of magnesium. the torque for fastening is about 10 ft lbs. I use a thread sealant made by loctite. I would not use teflon tape. pipe dope will work. replacing these plugs is quite common. possible that the threads have issues. dealership will have the correct plug must be magnesium ! your leak could be the transfercase that has a hole worn threw it. this issue does effect some of these transfercases. if you have this issue then the complete case would need be replaced..expensive. If the case is cracked at the plug area some metal epoxy or marine tex will seal it. If you use marine tex get a heat gun or hair dryer to speed up the hardening process.. post back what is the issue and fix .. |
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11-15-2011, 05:04 PM | #4 | ||
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Re: transfer case leak
Quote:
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11-15-2011, 06:32 PM | #5 | ||
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Re: transfer case leak
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unless you have the proper tools and training this is no a back yard repair job. other holes in the case most times can be repaired by marine tex or metal mender this would also include transmissions with casting defects causing small leaks. cracks if small why not try patch it. the pump leak was patch by some forum members. it lasted for a few months. |
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11-16-2011, 04:47 PM | #6 | |
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Re: transfer case leak
One of the few times, so far, that I disagree with you, jc. I'm coming up on one year with this repair professionally performed by a tranny shop with zero problems to date. Haven't seen a drop of fluid yet, knock on wood...
By the same token, it may very well be cheaper to buy a new case half (if possible) and simply replace that. Problem solved for another 100k or so miles... |
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11-16-2011, 05:02 PM | #7 | ||
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Re: transfer case leak
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if so I agree with you , it should work out. If your saying just use epoxy on the exterior of case with where the pump wear is occuring , this will not work for long. That was what I was saying. so what did this cost you ?, if they indeed made the repairs that I think your referring to that has lasted . |
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11-16-2011, 10:29 PM | #8 | ||
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Re: transfer case leak
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You're correct, though. If the hole was simply epoxied from the outside and the pump not replaced the issue would just continue to get worse... |
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