AJ133 Chain TENSIONER Repair - Bulletin LTB00474 Version 2 (SSM71893)

WARNING: This page is about the LR4 Base, which is a different variant/trim than selected.

Publication date: 2015-01-05
Reference number: SSM71893

AJ133 CHAIN TENSIONER REPAIR - BULLETIN LTB00474 VERSION 2

TECHNICAL SERVICE BULLETIN

Reference Number(s): SSM71893, Date of Issue: January 5, 2015

LAND ROVER:	LR4/L319, Range Rover/L322, Range Rover Sport/L320
CATEGORY:	Engine

SERVICE INFORMATION

Symptom 497000 Engine Noise

Attachments blade.pdf (blade.pdf)

Content

ISSUE

Customers report a repeat issue of engine noise from the timing chain system, after the vehicle had previously been repaired.

CAUSE

The timing chain was not at the correct tension. This was caused by the full repair procedure in TSB LTB00474 not being followed - a complete set of timing chain tensioners and blades were not fitted.

ACTION

Follow TSB LTB00474 version 2 and replace both pairs of tensioners and blades using the part numbers listed in the technical bulletin. The tensioner blades now have a steel insert to help prevent wear. The design of the tensioner has also changed to match the revised blades. An engine must not have a mix of old level and new level parts fitted. For reference, a picture is attached showing typical wear of the old design tensioner blade, without the steel insert.