K 1500 Truck 4WD V6-262 4.3L (1991)
Differential Case: Customer Interest
Driving Axle (Front) - Fluid Leaks From Vent
Number:
91-445-4C
Section:
4C
Date:
NOV. 1991
Corporate Bulletin No.: 164305
ASE No.: A3
Subject:
FRONT AXLE VENT HOSE CONNECTOR LEAK
Model and Year:
1988-91 K TRUCK
Owners of some 1988-91 K1, K2, K3 trucks may experience a leak at the front axle vent hose connector (54, Figure 1). This leak usually occurs at the
threads of the front axle vent hose connector.
This leak may be caused by inadequate sealer applied to the vent connector threads and relaxation or shrinkage of the vent connector material.
This leak may be corrected by replacing the vent hose connector with a revised connector featuring an O-ring seal.
Figure 1
SERVICE PROCEDURE:
Remove (Figure 1)
1.
Front axle skid plate (if equipped).
2.
Clamp (52).
3.
Hose (53) from the vent connector.
4.
Vent hose connector (54).