Thermostat housing-coolant leak

THERMOSTAT HOUSING-COOLANT LEAK

Model

New Range Rover

Affected vehicles

All V8 Petrol Derivatives from Vin LP 300001 to LP 309340

Date

1995-03-07

Reference

07/03/95

Bulletin text

Thermostat Housing - Coolant Leak

MODEL AFFECTED VEHICLES

New Range Rover All V8 Petrol Derivatives from Vin LP 300001 to LP 309340

DETAIL

A small number of vehicles within the above Vin range may show signs of fatigue around the thermostat housing welded joint, investigations have shown this to be a supplier issue relating to assembly process.

All Petrol vehicles within the above Vin range will require a visual check to be carried out, if any sign of fatigue or coolant leaks are evident, the thermostat housing will require replacing.

NOTE: This bulletin supersedes NRR 26.04.94.EN

ACTION REQUIRED

During the first service or at the earliest opportunity, inspect the thermostat housing for leaks and replace if necessary. Please submit a product report providing vehicle details in instances where thermostat housing are replaced.

PARTS INFORMATION

ESR 2857 Thermostat assembly

PROCEDURE

Refer to the workshop manual section 26. Carefully drain coolant and reuse.

Thermostat Housing - Coolant Leak Procedure

The method for checking the operation of the thermostat should be carried out as a priority.

a) Check all coolant clips are secure. b) With engine cold, remove expansion tank cap, and fit coolant system pressure testing kit. c) Pressurise the system to 20psi. d) Ensure that the system remains pressurised at 20psi for 60 seconds. e) If the pressure falls below 18psi then there is a leak in the system. f) Check bottom hose thermostat for leaks. g) Replace bottom hose thermostat if a leak exists. h) If there are no leaks, remove the pressure testing kit, and replace expansion tank cap.

ISSUE 2 07/03/95 NRR/26/02/95/EN

WARRANTY

Normal warranty policy and procedures apply

COMP. CODE

2D5B

SRO

26.45.01 Replace Thermostat Housing 01.10 hours

26.10.07 Check for Thermostat coolant leaks 00.20 hours.