K 2500 Truck 4WD V8-379 6.2L DSL VIN C FI (1989)
Some owners of 1988-91 K Trucks equipped with a New Process 241 transfer case (Figure 1) may comment that their vehicle experiences a fluid leak
from the transfer case vent. This leak usually occurs during normal highway driving in 2H.
This condition may be caused by fluid spray from the planetary carrier entering the vent pipe (Figure 2) and being forced out the vent hose.
To correct this condition, it is necessary to install a revised vent pipe (P/N 15958721). The opening of the revised vent pipe has been moved from the
end of the pipe to the side of the pipe. This prevents fluid from entering the vent pipe and leaking from the vent hose.
SERVICE PROCEDURE
1.
Remove the transfer case from the vehicle. Refer to the appropriate C/K Service Manual, Section 7D, "TRANSFER CASE REPLACEMENT" for
the complete transfer case removal procedures.
