Cruise control actuator - intermittent operation

CRUISE CONTROL ACTUATOR - INTERMITTENT OPERATION

Model

New Range Rover Range Rover Classic Discovery

Affected vehicles

318333 to 320759 662357 to 662708 167348 to 171917 502908 to 540244

Date

1996-01-17

Reference

17/01/96

Bulletin text

Cruise Control Actuator-Intermittent Operation

MODEL

New Range Rover Range Rover Classic Discovery

DETAIL

A small number of vehicles within the above Vin range may have been despatched from Land Rover that may suffer an ‘Air leak’ on the cruise control actuator, between the actuator body and the rubber diaphragm. During ‘set’ of the cruise control, if the actuator has an air leak, the time taken to ‘’ set/hold’’ the cruise speed, will be increased. In certain cases the leak may be too large, and the actuator (cruise control) will not function correctly.

Note: This bulletin supersedes 19/06/95/EN the information in the parts section has been updated

ACTION REQUIRED

Upon customer complaint of a cruise control ‘set/hold’ in operative as a lengthy duration to achieve ‘set/hold’, carry out the checks detailed below.

PARTS INFORMATION

ETC 7150 Cruise control actuator Petrol engine

ANR 4517 Cruise control actuator Diesel engine (Electronic Diesel Control)

PROCEDURE

Refer to the workshop manual section 19 Actuator

Procedure for checking the cruise control actuator.

1. Open the bonnet and locate the cruise control actuator unit. 2. Remove the vacuum pipe from the base of the actuator ‘A’ (see illustration opposite). 3. Compress the diaphragm by approximately 510mm, place finger firmly over the pipe on the actuator body to achieve a seal. 4. Release the diaphragm, with the pipe sealed the diaphragm should remain in its depressed condition. 5. If the diaphragm returns to its normal shape repeat the test once more to confirm result. 6. If a leak is confirmed, replace the actuator.

Issue 2 17/01/96 19/06/95/EN

AFFECTED VEHICLES

LP 318333 to 320759 LH 662357 to 662708 LJ 167348 to 171917 LJ 502908 to 540244

WARRANTY

Normal warranty policy and procedures apply

COMP. CODE

2W3N

SRO

19.75.12 Cruise control actuator check/renew 00.20 hours