Introduction Transfer Box The 4-sp gearbox, fitted to all manual Range Rovers from 1970 to 1983, has a transfer box which is integral with the gearbox assembly and is, therefore, inseparable from it. The 5-sp manual gearbox, introduced in July 1983, has a separate transfer box as follows: 1983 to approx. 1984 models are fitted with Land Rover's LT230R unit, which is gear-driven and incorporates a manually selectable diff-lock. 1984 (approx.) to Oct 1988 models are fitted with Land Rover's LT230T unit, similar to the LT230R but with taper bearings on the intermediate shaft instead of the previously used needle roller bearings. Oct 1988 onwards models are fitted with a Borg Warner chain-driven transfer box, incorporating a viscous differential lock. Automatic models also have separate transfer boxes, as follows: 3-sp autos are fitted with either the LT230R or LT230T transfer boxes. 4-sp autos to Sept 1988 are fitted with the LT230T transfer box. 4-sp auto vehicles from Oct 1988 onwards are fitted with the Borg Warner chain-driven transfer box. This section includes fully reconditioned transfer gearboxes, as well as the components associated with the transfer box, such as the speedo cable. Also included is the parking brake, since this operates on the rear of the transfer box rather than the rear wheels, as is conventional. As with the main gearbox, we have only listed a limited selection of internal components, because repair is rarely as cost-effective as replacement with a recon unit. Unit Identification Identification of the transfer box fitted to your Range Rover is fairly straightforward: 4-sp. All 4-sp manual vehicles have an integral transfer box. 5-sp/LT230R. LT230R transfer boxes fitted to 5-sp vehicles have a serial number (located on the rear lower face of the transfer box) which begins 15D. 5-sp/LT230T. LT230T transfer boxes fitted to 5-sp vehicles have a serial number beginning 27D or 28D. 5-sp/Borg Warner. Vehicles fitted with the BW transfer box are easily identified from the transfer gear lever inside the car, which has a simple fore & aft plane instead of the H-gate of earlier vehicles. 3-sp Auto/LT230R. LT230 transfer boxes fitted to 3-sp auto vehicles have a serial no. beginning 14D. 3-sp Auto/LT230T. LT230T transfer boxes fitted to 3-sp autos have a serial no. beginning 26D. 4-sp Auto/LT230T. 4-sp auto vehicles with the LT230R transfer box have a serial no. beginning 28D 4-sp Auto/Borg Warner. These vehicles are easily identified by the transfer gear lever inside the car, which has a simple fore & aft plane instead of the H-gate of earlier vehicles. Gear Ratios The high-gear ratios of the transfer boxes are as follows: LT230R   14D (Auto) 1.003:1   15D (Manual) 1.192:1 LT230T   26D (Auto) 1.003:1   27D (Manual)1.192:1   28D (Man & auto)1.222:1 Borg Warner (Man & auto) 1.206:1

Transfer Gearbox Units

Transfer Gearbox;
Reconditioned.
LT230R -
For Manual (15D) - (1) - RA1102R
For Auto (14D) - (1) - RA1103R
LT230T -
Up to 1986
For Manual (27D) - (1) - RA1104R
For Auto (26D) - (1) - RA1105R
1986 onwards
Manual & Auto (28D) - (1) - RA1106R
Borg Warner -
Manual & Auto - (1) - RA1107R

Centre Differential

Centre differential;
4 speed manual - (1) - FRC9966
LT230R - (1) - FRC7569
LT230T - (1) - FTC5207
Borg Warner - (1) - RTC6060

Chain - Borg Warner

Chain (Borg Warner) - (1) - RTC6041
Replacement drive chain.

Gaskets & Oil Seals

Gasket set;
4 speed manual - (1) - 606754
Gearbox gasket set.
LT230R/LT230T - (1) - RTC3890

Oil seal (Front flange);
4 speed manual - (1) - 571175
All other models - (1) - FRC7043

Oil seal (Rear flange);
4 speed manual - (1) - 90622240
All other models - (1) - FRC7043

Diff Lock Selector

Vacuum control valve (4 speed manual) - (1) - FRC5656
Diff lock engagement knob.
Vacuum actuator (Diff lock) - (1) - 571957
4 speed manual.

Switch (Diff lock warning);
4 speed manual - (1) - BAU1074
LT230 boxes - (1) - PRC2911

Locknut (Warning switch) - (1) - NT110041
LT230 models.

Gear Oil

Unipart 20W/50 (1 litre) - (ar) - GGL614
Unipart EP90 (0.5 litre) - (ar) - GGL190

Unipart ATF;
0.5 litre - (ar) - GGL175
5 litre - (ar) - GGL505

Speedo Cable/Driven Gear

Speedo cable;

1970 to 1984 -
RHD
Manual & Auto - (1) - 579165
LHD
Manual - (1) - 579166
Auto - (1) - PRC3965

1985 onwards (2 piece) -
Instrument end
All models - (1) - PRC5568
Gearbox end
RHD - (1) - PRC5564
LHD - (1) - PRC5565

1985 onwards (1 piece) -
RHD - (1) - PRC6017
Manual & Auto.
LHD - (1) - PRC6018
Manual & Auto.

1989 onwards (Electronic) -
Transducer to instruments - (1) - PRC6278
Not fitted after 1992.
Gearbox to transducer
3.5 V8 & 2400TD - (1) - PRC6320
3.9 V8 & 2500TD - (1) - PRC7949
4.2 V8 & Tdi (RHD) - (1) - PRC6018
Tdi (LHD) - (1) - PRC6018

Transducer (Speedo);
Electronic speedo.
1989 to 1991 - (1) - AMR3386
1992 (VIN JA) to 1994 - (1) - AMR3386
1995 (VIN MA) onwards - (1) - YBE100540

Angle drive adaptor;
Between cable & speedo.
1970 to 1984 - (1) - 579164
Vehicles with circular instruments.
1985 onwards - (1) - PRC4352
Vehicles with rectangular instruments.

Driven gear (Speedo);
Fitted into transfer box.
4 speed manual - (1) - 571975
LT230R -
Blue (20 teeth) - (1) - FRC3310
Red (23 teeth) - (1) - FRC3313
LT230T -
Black (23 teeth) - (1) - FRC3383
green (21 teeth) - (1) - FRC3311
Red (23 teeth) - (1) - FRC3313
Borg Warner -
Red (23 teeth) - (1) - FRC3313
Green (21 teeth) - (1) - FRC3311
Black (23 teeth) - (1) - FRC9339

Oil seal (Gear housing);
4 speed manual - (1) - 528747
All other models - (1) - NKC105

'O' ring seal (gear housing) - (1) - 571665

Parking/Handbrake

Brake shoe set;
4 speed manual - (1) - STC2880
LT230R/LT230T - (1) - STC2990
Borg Warner -
Horizontally mounted shoes - (1) - STC965
Shoes top & bottom. Up to approx 1992.
Vertically mounted shoes - (1) - STC1525
Shoes left & right. Approx 1992 onwards.

Retaining kit (Brake shoes);
4 speed manual - (1) - RA1261
Borg Warner (Vertical shoes) - (1) - STC1532

Adjuster (Brake shoes);
4 speed manual - (1) - RA1108
LT230R/LT230T - (1) - STC244
Borg Warner -
Horizontal shoes - (1) - STC244
Vertical shoes - (1) - STC1527

Service kit (For adjuster STC244) - (1) - STC245
Expander (Brake shoes) - (1) - AEU2734
Applicable only to LT230 & B.W. with horizontal shoes.
Service kit (Expander) - (1) - AEU2735
Retaining kit (Expander) - (1) - RA1109

Brake drum;
4 speed manual - (1) - 90576624
All other models - (1) - FRC3502

Sealing plug (Brake drum) - (1) - FRC2872
4 speed manual models.

Screw (Drum retaining);
4 speed manual - (2) - 886021
All other models - (2) - SA108201

Backplate (Handbrake);
4 speed manual - (1) - 606737
All other models to approx 1992 - (1) - STC963
With horizontally mounted brake shoes.
1992 (approx) onwards - (1) - STC1534
petrol & diesel, with vertically mounted brake shoes.

Handbrake Cable

Handbrake cables were not used on RHD Range Rovers prior to 1986 (VIN CA).
LHD vehicles with automatic transmission were fitted with handbrake cables from 1982 onwards.

Handbrake cable;
1982 to 1986 -
LHD Automatic - (1) - NRC8096
1986 (VIN CA) to VIN CA265468 -
RHD - (1) - NRC5088
LHD - (1) - NRC5089
VIN CA265469 to 1988 (VIN EA) -
All models - (1) - NTC9400
1989 (VIN FA) onwards -
V8 models
Up to eng no. 36D22144A - (1) - NTC6125
Eng no. 36D22145A onwards - (1) - STC1528
Diesel models
Up to 1994 (VIN LA) - (1) - NTC6125
1995 (VIN MA) onwards - (1) - STC1528

Handbrake Lever Kits

Kits contain the handbrake linkage parts which commonly wear, leading to poor handbrake operation. Contents typically include clevis pins, split pins, nuts & washers,according to the year of the vehicle.

Handbrake lever kit;
1970 to 1986 -
Manual - (1) - RA1110
Automatic - (1) - RA1111
1986 (VIN CA) to 1988 (VIN EA) -
Manual & Auto - (1) - RA1112
1989 (VIN FA) onwards -
All models - (1) - RA1113

Handbrake Warning Switch

Switch (Handbrake warning);
1970 to VIN 100782 - (1) - 589063
VIN 100782 to 1986 (VIN CA) - (1) - PRC4475
1986 onwards - (1) - ADU2888L