Alternator heat shield cracking

ALTERNATOR HEAT SHIELD CRACKING

Model

Discovery Diesel 300 Tdi Derivatives Discovery Diesel 300 Tdi Derivatives Discovery Diesel 300 Tdi Derivatives

Affected vehicles

081991 to 200000 700000 to 703237 500000 to 534104

Date

1997-04-15

Reference

15/04/97

Bulletin text

Alternator Heatshield - Cracking

MODEL

Discovery Diesel 300 Tdi Derivatives Discovery Diesel 300 Tdi Derivatives Discovery Diesel 300 Tdi Derivatives

DETAIL

A number of product reports have been received which indicate the alternator heatshield cracking around its fixing points on 300 Tdi Discovery vehicles fitted with A127i 100 amp alternators. The cause has been found to be excessive vibration on the heatshield. To overcome this concern Diesel engineering have developed a heatshield anti-vibration rubber mounting that is attached to the present fixings on the alternator.

ACTION REQUIRED

Upon customer complaint of an alternator heatshield cracking, fit the new mounting as directed below.

PARTS INFORMATION

STC 3690 Kit Rubber Bobbin and Rubber washer

WJ 105001 Plain Washer

ERR 4859 Heatshield

For Loctite address information see bulletin 131/93

PROCEDURE

Refer to workshop manual section 12 Generator

Process to replace cracked heatshield. 1. Remove cracked heatshield 2. Remove and discard metal extension spacers (3 off) see illustration opposite. 3. Remove heatshield studs (3 off). 4. Cut the thread length of heatshield studs down to 5mm to allow clearance of thread inside new rubber bobbin. 5. Refit heatshield studs (3 off) to alternator and torque to 3 Nm. 6. Fit anti-vibration rubber bobbins to heatshield studs (3 off) see illustration overleaf, use Loctite nut lock 241/242 on threads to lock bobbins to studs. 7. Fit new heatshield using 3 rubber washers, 3 plain washers, and 3 M5 nuts, torque to 3Nm(see illustration overleaf).

© Rover Group 1996

15/04/97

12/02/97/EN

AFFECTED VEHICLES

LP LJ 081991 to 200000 LJ 700000 to 703237 LJ 500000 to 534104

WARRANTY

Normal warranty policy and procedures apply

COMP. CODE

7D4E

SRO

86.10.89/26 Heatshield/mountings - renew 00.40 hour

Alternator Heatshield - Cracking

MODEL

Discovery Diesel 300 Tdi Derivatives Discovery Diesel 300 Tdi Derivatives Discovery Diesel 300 Tdi Derivatives

Key to illustration

1. Alternator 2. Heatshield stud 3. Anti-vibration bobbin 4. M5 Nut 5. 5mm plain washer 6. Rubber washer 7. Heatshield

15/04/97 12/02/97/EN

AFFECTED VEHICLES

LP LJ 081991 to 200000 LJ 700000 to 703237 LJ 500000 to 534104