In my 1997 GMC Yukon K1500, the transfer case is leaking at the seam between the two halves. The T-case is NP241C, I think. It was probably serviced by the previous owner, since I can see red RTV sealant between the case halves. I’d like to reseal it. Do you think it’s possible to split the case and reseal it while it’s still installed in the vehicle? I understand there are 2–3 snap rings on the output shaft that need to be removed, but it looks like there might be enough space to do that with the transfer case still in the truck.
Transfer case leak
- Thread starter santon
- Start date
Indeed it is, but the servicing may require some Specialty Tools and likewise, particular R&R Parts and Seals Kits available from this Vendor. Know that in many cases, some of the internal parts located in close proximity to the internal gears, chain drive and axle shaft(s) over nearly 30 Years of reliable service are capable of employing 'Newton's Third Law of Motion' in counter-valence to the Torque being incessantly present between some of these parts and the Outer Shells from long operation...and literally... Pound their contact surfaces together often enough to finally manage to penetrate through the Shell areas affected... and begin a problematic "Transfer Case Gear Oil Leak" that can be misinterpreted as coming from failing Case PTFE and Rubber Seals.
The cases that may be made of Magnesium are difficult to repair because of the dangerous nature of the metal igniting and burning out of control if any welding is attempted to close up the holes involved in the mistaken belief that they are made out of Aluminum. TIG welding might be possible, but such deserves the careful and expert attentions of Pro Welders and always performed with maximum safety in mind. Think... "Magnesium Fire Starters" as an example and the basis for all this concern
There are kits with updated replacement components meant to prevent further damage from this Counter-Torque Phenomena. Bear this in mind if you decide to eschew a Hands On Tear Down and Rebuild and wind up buying someone else's headache with a like cause and origin of these mysterious "leaks". Due Diligence and more Research is Always a Good Guide to Action.
For the requisite Kits and Tools...
The cases that may be made of Magnesium are difficult to repair because of the dangerous nature of the metal igniting and burning out of control if any welding is attempted to close up the holes involved in the mistaken belief that they are made out of Aluminum. TIG welding might be possible, but such deserves the careful and expert attentions of Pro Welders and always performed with maximum safety in mind. Think... "Magnesium Fire Starters" as an example and the basis for all this concern
There are kits with updated replacement components meant to prevent further damage from this Counter-Torque Phenomena. Bear this in mind if you decide to eschew a Hands On Tear Down and Rebuild and wind up buying someone else's headache with a like cause and origin of these mysterious "leaks". Due Diligence and more Research is Always a Good Guide to Action.
For the requisite Kits and Tools...
NP241 Transfer Case Rebuild Kits, Repair & Replacement Parts Online
Rebuild the transfer case on your GM, Jeep, Dodge & Chevy vehicles with our selection of new process 241 parts. Premium-quality parts at prices that can’t be beat.
www.allstategear.com
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