T-Case drain plug crack!
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Senior User
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T-Case drain plug crack!
I saw a puddle underneath my truck today on my new driveway, and needless to say I was rather upset. There is a crack on the left side of the drain plug for the transfer case. No idea how it got there. Haven't even drove my truck in 3 days and no puddle till this morning.
Any ideas on how to fix it? It is pretty deep and goes into the threads from the outside. I am thinking JB weld, but not sure about how to fix the crack in the threads.
Chris
Any ideas on how to fix it? It is pretty deep and goes into the threads from the outside. I am thinking JB weld, but not sure about how to fix the crack in the threads.
Chris
Posting Guru
Joined: Mar 2007
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This usually happens when people either overtorque the plug or use something like teflon tape because it increases the diameter of the plug, causing it to crack. Im not saying you did it, just thats how Ive always seen them crack. I suppose JB eld is worth a shot, but make sure to clean all oil off the surfaces, and if your plug has any teflon tape, take it off!
Lead Driver
Joined: Aug 2006
Posts: 5,670
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From: Sand Lake, MI
Looks like the plug was over tightened until the case cracked, the plug is tapered. Use of thread tape would keep that from happening, takes up space filling the gaps in the thread so the plug only needs snugged up good to seal.
Only way to fix it is to find someone that can weld that material, may be easier to just replace the back half of the case and be done with it. Jb weld may work to a extent, that is if you can put up with a drip. That and having to redo it from time to time.
Welding may not work very well without striping it down and getting it good a clean before starting the welding.
Only way to fix it is to find someone that can weld that material, may be easier to just replace the back half of the case and be done with it. Jb weld may work to a extent, that is if you can put up with a drip. That and having to redo it from time to time.
Welding may not work very well without striping it down and getting it good a clean before starting the welding.
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there was a lot of teflon tape on the plug when I took it off. Oh the wonders of buying a used truck!
I used an angle grinder to scuff it up a bit and there is a crack exactly 180 degrees on the opposite side. Out-friggin-standing.
Well I will be trying the ol JB treatment. I just put a new t-case motor and tail shaft on the thing. Not in any hurry to drop it yet. I am having a problem with the front right axleshaft grinding on the right beam. (is that what you call it?)
Might be from the 4" lift, but not too sure. I did put the longer radius arms on it and had to install the new brackets as well, as the old ones were rather rusted.
Might have to start a seperate thread for that problem.
Chris
I used an angle grinder to scuff it up a bit and there is a crack exactly 180 degrees on the opposite side. Out-friggin-standing.
Well I will be trying the ol JB treatment. I just put a new t-case motor and tail shaft on the thing. Not in any hurry to drop it yet. I am having a problem with the front right axleshaft grinding on the right beam. (is that what you call it?)
Might be from the 4" lift, but not too sure. I did put the longer radius arms on it and had to install the new brackets as well, as the old ones were rather rusted.
Might have to start a seperate thread for that problem.
Chris
Lead Driver
Joined: Aug 2006
Posts: 5,670
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From: Sand Lake, MI
Yea to much teflon tape can be or is just as bad as not using anything on the plug.
They may have had that much tape on it trying to stop the leak too. All the time just making things worse doing so.
I'd put the plug in first, clean it all real good and then JB weld over the whole thing.
They may have had that much tape on it trying to stop the leak too. All the time just making things worse doing so.
I'd put the plug in first, clean it all real good and then JB weld over the whole thing.
Elder User
Joined: Apr 2003
Posts: 649
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From: Covington, Tn
It looks as thou the crack extends past the threads in the case. I would think welding would fix the out side but youll always have the crack on the inside where the threads are.
Im thinking unless you replace the back half or weld and retap the threads youll always have a drip
Im thinking unless you replace the back half or weld and retap the threads youll always have a drip
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Fleet Mechanic
Joined: Nov 2004
Posts: 1,324
Likes: 4
From: Michigan
Not sure of the material on our tcases, but my suburban had a tcase leak from the pump rubbing through. I had to have it welded by someone that worked with magnesium. JB Weld won't adhere to magnesium. The trans shop charged me $300 to remove, rebuild and weld up. Better then new.
Check into having it welded up, or replace the case half.
Check into having it welded up, or replace the case half.
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