Driving Axle (Front) - Fluid Leak From Vent

91chevy26

GMC NUMBER: 91-4C-163

GROUP: 4C Front Axle

DATE: November, 1991


CORPORATE NUMBER: 164305


SUBJECT: FRONT AXLE VENT HOSE CONNECTOR LEAK (REPLACE VENT HOSE CONNECTOR)

MODELS: 1988 - 1991 K-TRUCKS


Some 1988-91 K-trucks may experience a leak at the front axle vent hose connector. 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).


Install (Figure 1)

1. New vent hose connector (54).

- Torque to 13 N-m (10 lbs.ft.).
- Sealer is NOT required or recommended.

2. Hose (53) to the vent connector.

3. Clamp (52).

4. Front axle skid plate (if equipped).

SERVICE PARTS INFORMATION:

Part Number Description Quantity
26032443 Connector, Front 1 per vehicle
Axle Vent Hose

Parts are currently available from GMSPO.

WARRANTY INFORMATION:
For vehicles repaired under warranty use:
Labor Operation: F3269

Labor Time: 0.3 hrs.