Workshop Manuals Factory service & repair Land Rover
01 Range Rover 2002MY ON Workshop Manual - System Description and Operation - LM - 6th Edition - NAS02 03 04 05 06 07 08 09 ENGINE - V810 11 12 ENGINE MANAGEMENT SYSTEM – V813 14 FUEL DELIVERY SYSTEM – V815 16 17 18 19 20 COOLING SYSTEM – V821 22 MANIFOLDS AND EXHAUST SYSTEM – V823 TRANSFER BOX24 AUTOMATIC TRANSMISSION – ZF 5HP2425 26 DRIVE AND PROPELLER SHAFTS27 28 FINAL DRIVE29 STEERING30 31 SUSPENSION32 33 34 35 BRAKES36 37 38 RESTRAINT SYSTEMS39 40 41 DOORS42 INTERIOR TRIM COMPONENTS43 44 45 SCREENS46 SEATS47 48 SUNROOF49 50 AIR CONDITIONING51 52 53 54 55 56 57 WIPERS AND WASHERS58 59 CHARGING AND STARTING60 61 62 63 64 LIGHTING65 66 BODY CONTROL UNIT67 68 COMMUNICATION DATA BUSES69 70 71 SECURITY72 WINDOWS73 74 75 ENTERTAINMENT AND INFORMATION SYSTEMS76 DRIVING AIDS77 78 INSTRUMENTS
Land Rover L322 Range Rover System Description and Operation23 · TRANSFER BOX
23 · General

Low Range Operation

Make
Land Rover
Model
Range Rover L322 Range Rover System Description and Operation
Section
Operation › Low Range Operation
TRANSFER BOXLow Range Operation
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TRANSFER BOX

DESCRIPTION AND OPERATION

41-21

1 Spare 5A fuse

2 Fuse 37

To engage the transfer box in neutral, switch the ignition to position II and select neutral 'N' on the transmission 
selector lever. Insert a spare 5 Ampere fuse or greater into the empty fuse position 37 in the passenger compartment 
fusebox, which is located at the back of the glovebox. Fuse position 37 can be identified using the legend on the 
fusebox cover.

Once the fuse is installed, the actuator will engage the transfer box in the neutral position.

Once in neutral, the low range 'mountain' symbol in the instrument pack flashes permanently and 'TRANSFERBOX 
NEUTRAL' is displayed in the instrument pack message centre.

Cold Climate Operation
In low ambient temperatures, there may be an increased time delay for the transmission to select neutral. To prevent 
the transfer box changing range before the transmission has selected neutral, the transfer box ECU contains software 
to delay the range change.

The transfer box ECU receives a transmission fluid temperature message on the CAN. If this temperature is 5

°

C 

(41

°

F) or below, the transfer box ECU initiates a nominal delay in the range change to allow the transmission to 

engage neutral. The delay period is dependant on transmission fluid temperature.

High Range Operation
In high range, the torque input from the transmission is passed to the transfer box input shaft. The position of the 
synchroniser sleeve couples the shaft directly to the differential housing. The differential splits the torque between the 
two side gears. One side gear is connected by splines and passes the torque to the rear output flange. The second 
side gear is connected to the chain drive sprocket and passes the torque, via the chain, to the front output flange.

Low Range Operation
In low range, the torque input from the transmission is passed to the transfer box input shaft. The synchroniser sleeve 
is moved and connects the planetary carrier to the differential housing. The torque from the transmission is now 
directed through the sun gear of the epicyclic gearset and, via the pinion gears and pinion gear shafts, into the 
planetary carrier. The annulus gear of the epicyclic gearset is secured inside the casing and generates the low range 
ratio of 2.69:1. The torque is then passed, via the synchroniser sleeve, to the differential housing where it is split 
between the two side gears. One side gear is connected by splines and passes the torque to the rear output flange. 
The second side gear is connected to the chain drive sprocket and passes the torque, via the chain, to the front output 
flange.

Parts & tools for this job Staging For Land Rover Range Rover

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