Transfer Case - Output Seal Leakage

No: 41/01/00/NAS
Ref: 41/02/96/US
41/01/97/NAS
Issue: 1
Date: 04/07/00

LT230 Transfer Gearbox Seal Leaks

AFFECTED VEHICLE RANGE:

Defender (LD) All
Discovery (LJ) All
Discovery Series II (LT) All

SITUATION:

NOTE:
This Bulletin replaces Technical Information Bulletin 41/02/96/US and 41/01/97/NAS. TRANSFER GEARBOX SEAL LEAKS

A new seal lip can become damaged by wear marks or damage on the seal journal of the original output flange. Leaks from the front or rear seals of LT230 transfer gearboxes may reoccur if complete seal sets including the output flange are not used in the repair.

RESOLUTION:

INSTALL COMPLETE SEAL/FLANGE KITS

Use only the complete flange kits listed in the PARTS INFORMATION section of this TIB when repairing output seals on the LT230 transfer gearbox.

PARTS INFORMATION:

STC4370 Seal and flange kit - front Discover Series I and Defender
STC3433 Seal and flange kit - rear Discover Series I and Defender
STC4379 Seal and flange kit - front Discovery Series II
STC3433 Seal and flange kit - rear Discovery Series II

WARRANTY CLAIMS:

NOTE:
These seal and flange kits must be used for ALL Warranty repairs. All parts from the kit MUST be used.

41.20.51 Time: Refer to the Repair Operation Times Manual
for the model under repair
Install new front output shaft seal and flange

41.20.54 Time: Refer to the Repair Operation Times Manual
for the model under repair
Install new rear output shaft seal and flange

FAULT CODE: M

Normal warranty policy and procedures apply

REPAIR PROCEDURE





CAUTION:
To ensure that the seals are fitted to the correct depth they must be fitted using Service Tool LRT-41-012 (Figure 1). This is a double-ended tool, identified for use with both front and rear output shaft seals. The installation of the front seal is shown in Figure 1.

1. Refer to Workshop Manual repair Section 41.20.51 (front output shaft seal) and Section 41.20.54 (rear output shaft seal) for replacement information.

2. Replace leaking seals with the seal and flange kits detailed in PARTS INFORMATION.