front of transfercase leaking after frontend replacement - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dmartin1 · 11-28-2010, 02:42 AM

ok so i just got done swapping a front end in my truck,and i noticed after i got everything together that right where the front driveshaft meets the transfercase its got a pretty bad leak,almost like a gear oil,it reeks bad.

is this a hard seal to replace? is it expensive? and uhm,whats it called,so i can do a part lookup?

if it aint one things its another! gah!

OldCreek · 11-28-2010, 02:15 PM

I changed the front seal and gasket of the NP205 while it was still in my truck. I had to remove the front axle/u-joint and then tackle the output shaft nut...with a impact air wrench. The nut needed to be removed so that the output housing cover could be removed. But it was all done while the t.c. was in the truck.

I guess it depends on what your t.c. is, also.

swamp rat · 11-28-2010, 10:53 PM

>>> right where the front driveshaft meets the transfercase its got a pretty bad leak,almost like a gear oil,it reeks bad.<<< >>>and uhm,whats it called,so i can do a part lookup?<<<

Humm, Output shaft seal and if it smells like gear oil you may want to drain it and fill with 10-40w motor oil.

11-28-2010, 02:42 AM	#1
dmartin1 Registered User Join Date: Aug 2008 Location: mohave valley,arizona Posts: 1,088	front of transfercase leaking after frontend replacement ok so i just got done swapping a front end in my truck,and i noticed after i got everything together that right where the front driveshaft meets the transfercase its got a pretty bad leak,almost like a gear oil,it reeks bad. is this a hard seal to replace? is it expensive? and uhm,whats it called,so i can do a part lookup? if it aint one things its another! gah! __________________ 1969 Shortbed in progress 1982 short step, few suspension and motor upgrades.getting a 468 1978 Shortbed fleet side bonanza fully loaded 1978 k20 Silverado loaded.currently engine-less 1989 k10 suburban 9" lift 65 nova And more

11-28-2010, 02:15 PM	#2
OldCreek Registered User Join Date: Jan 2007 Location: Central Coast California Posts: 1,026	Re: front of transfercase leaking after frontend replacement I changed the front seal and gasket of the NP205 while it was still in my truck. I had to remove the front axle/u-joint and then tackle the output shaft nut...with a impact air wrench. The nut needed to be removed so that the output housing cover could be removed. But it was all done while the t.c. was in the truck. I guess it depends on what your t.c. is, also. __________________ 1972 K20 Suburban 5.7/700r4/NP205 Dana 44/H052 Sold 1972 C10 5.3L/4L60E 12bolt 5Lug - Sold 1971 K5 Blazer 6.0L LQ9 4L60E NP205 Dana 44/H052!!! 1970 K3500 1ton CrewCab 8.1L/Allison1000/NP205 Dana 60/14B!!!! - Sold 1984 K10 SWB 7.4L/4L80e/NP208 Corp 10/12 bolt Sold 1988 V30 CCLB 7.4L/TH400/NP205/Dana 60/Dana 70/3.73!!! (Sold) 2003 K2500HD 8.1/Allison1000/NP263

11-28-2010, 10:53 PM	#3
swamp rat Registered User Join Date: Oct 2007 Location: Spanaway Posts: 8,451	Re: front of transfercase leaking after frontend replacement >>> right where the front driveshaft meets the transfercase its got a pretty bad leak,almost like a gear oil,it reeks bad.<<< >>>and uhm,whats it called,so i can do a part lookup?<<< Humm, Output shaft seal and if it smells like gear oil you may want to drain it and fill with 10-40w motor oil. __________________ Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's



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