Operation CHARM: Car repair manuals for everyone.

Engine - Oil Leaks at Valve Cover Vent Tubes

12/20/96

12/1O/96/US

SUBJECT:
PRIDE - Valve Cover Crankcase Vent Tube Sealing

MODEL:
Range Rover
Discovery

AFFECTED VEHICLES:
LP 1995-96
LH
LJ 1996
LD

DETAIL

Some leaks may originate in and around the LH and RH valve covers. If There is any evidence of oil leaks (seepage) around the metal crankcase vent tubes in the top of either the LH or RH valve cover, repair may be accomplished with the valve covers on the vehicle or removed to repair a valve cover gasket leak.

The diagnostic steps and repair procedures detailed in this bulletin were developed as an element of the Land Rover Way OPERATION PRIDE. This TIB provides a library location for PRIDE information within the Land Rover North America technical literature system.

ACTION REQUIRED

Upon customer complaint for The symptoms outlined, perform the specified repairs.

PARTS INFORMATION

LRNA25223 - Elastomeric Sealant

Locally sourced items:
Loctite(R) # 577 Sealant

(call 1-800-LOCTITE for ordering information)

PROCEDURE





Perform the diagnostic procedures and repairs outlined in this bulletin for the replacement of valve cover gasket.

Valve Cover Crankcase Vent Tubes

This repair can be performed with the valve covers on or off the vehicle.





1. Remove the crankcase ventilation hose(s) from the leaking vent tube(s).

2. Ensure that the tube(s) is not loose in the valve cover.

3. If the tube(s) is loose in the cover, repair locally or replace the valve cover assembly.

Refer to TIB 12/04/96/US for valve cover removal and gasket installation.

4. Thoroughly clean the base of the crankcase vent tube(s) where they enter the valve cover. The area must be free of all oil and dirt.

5. Apply a small bead of Elastomeric Sealant (LRNA25223) completely around the base of the vent tube(s). Make sure a complete circular bead is formed.

6. Replace the crankcase hose immediately and do not disturb the joint until the sealant has cured.

7. Clean off any excess sealant from the valve cover.

WARRANTY:

Normal warranty procedures and policies apply.

COMP.CODE:

SRO:

12.29.89/27 - Time: 0.20 hr.
Reseal crankcase tubes