ECU LAND ROVER DISCOVERY 2002 Workshop Manual

TRANSFER BOX - LT230SE
41-26 REPAIRS
Refit
1.Fit new input shaft oil seal.

+ TRANSFER BOX - LT230SE,
REPAIRS, Oil seal - input shaft.
2.Clean transfer box to gearbox mating faces.
3.Raise transfer box on jack and align to guide
studs LRT-41-009.
4.Clean transfer box to gearbox bolt threads.
5.Apply Loctite 290 to bolt and stud threads.
6.Fit and lightly tighten 2 bolts and nut securing
transfer box to gearbox. If new stud is to be
fitted, apply Loctite 290 to stud threads and
tighten to 45 Nm (33 lbf.ft).
7.Remove guide studs, fit and lightly tighten
remaining 3 bolts.
8.Tighten bolts and nut by diagonal selection to
45 Nm (33 lbf.ft).
9.Position gearbox RH mounting and tighten
bolts to 85 Nm (63 lbf.ft).
10.Tighten gearbox RH mounting nut to 48 Nm
(35 lbf.ft).
11.Remove 4 bolts securing support plate to
gearbox jack.
12.Remove 4 bolts securing support plate LRT-99-
010 to transfer box and remove plate.
13.Clean bottom plate bolt threads.
14.Apply Loctite 290 to threads of 4 bottom plate
bolts.
15.Fit 4 bolts securing bottom plate to transfer box
and tighten to 25 Nm (18 lbf.ft).
16.Position breather pipe and secure to bulkhead
clip.
17.Connect multiplug to reverse light switch.
18. If fitted - Connect Lucars to differential lock
switch.
19.Fit multiplug and cable tie to transfer gearbox
bracket. 20.Position high/low ratio selector cable and
secure with clevis pin.
21.Clean handbrake and mating face.
22.Position handbrake back plate and tighten
bolts to 75 Nm (55 lbf.ft).
23.Clean handbrake drum.
24.Fit handbrake drum and tighten retaining
screw.
25.Fit front propeller shaft.

+ PROPELLER SHAFTS, REPAIRS,
Propeller shaft - front.
26.Fit rear propeller shaft.

+ PROPELLER SHAFTS, REPAIRS,
Propeller shaft - rear.
27.Clean exhaust silencer and mating face.
28.Position silencer, fit new gasket , connect
mounting rubbers and tighten nuts to 40 Nm
(30 lbf.ft).
29.Refill transfer box with oil.

+ MAINTENANCE, PROCEDURES,
Transfer box.
30.Fit front exhaust pipe.

+ MANIFOLDS AND EXHAUST
SYSTEMS - Td5, REPAIRS, Pipe - front.

TRANSFER BOX - LT230SE
REPAIRS 41-27
Transfer box - V8
$% 41.20.25.99
Remove
1.Remove front exhaust pipe.

+ MANIFOLDS AND EXHAUST
SYSTEMS - V8, REPAIRS, Front pipe.
2.Drain transfer box oil.

+ MAINTENANCE, PROCEDURES,
Transfer box.
3.Remove 8 bolts securing rear cross member
and remove cross member.
4.Remove 3 nuts securing intermediate silencer
to tail pipe.
5.Release silencer from mounting rubbers,
remove silencer and discard gasket.
6.Remove front propeller shaft.

+ PROPELLER SHAFTS, REPAIRS,
Propeller shaft - front.
7.Remove rear propeller shaft.

+ PROPELLER SHAFTS, REPAIRS,
Propeller shaft - rear.8.Remove handbrake drum retaining screw and
remove handbrake drum.
9.Remove 4 bolts from handbrake back plate,
release back plate and tie aside.
10.Remove clevis pin and 'C' washer securing
high/low ratio selector cable to selector lever
and release cable from abutment bracket.

TRANSFER BOX - LT230SE
41-28 REPAIRS
11.Remove 2 cable ties securing cable to fuel
pipes.
12.Disconnect 2 Lucars from oil temperature
sensor and disconnect reverse lamp switch
multiplug.
13.Remove banjo bolt securing breather pipe and
discard washers.
14. If fitted - Disconnect 2 Lucars from differential
lock switch.
15.Release and disconnect transfer box neutral
switch multiplug. 16.Remove 4 bolts from transfer box bottom plate,
position support plate LRT-99-010 to transfer
box and tighten bolts.
17.Position gearbox support jack and secure
support plate to jack using 4 bolts.
18.Remove 3 bolts securing transfer box to
gearbox.
19.Fit 3 guide studs LRT-41-009 through transfer
box bolt holes to support it during removal.
20.Remove 2 bolts and nut securing transfer box
to gearbox case. If securing stud is removed
during this operation, it must be discarded
and a new stud fitted.
21.Position a jack to support gearbox and engine.

TRANSFER BOX - LT230SE
REPAIRS 41-29
22.Remove 4 bolts and nut securing RH mounting
to body and transfer box.
23.Remove nut securing LH mounting to body.
24.Raise gearbox and remove RH mounting.
25.With assistance, remove transfer box from
gearbox.
26.Remove input shaft oil seal.

+ TRANSFER BOX - LT230SE,
REPAIRS, Oil seal - input shaft.
Refit
1.Fit new input shaft oil seal.

+ TRANSFER BOX - LT230SE,
REPAIRS, Oil seal - input shaft.
2.Clean transfer box to gearbox mating faces.
3.Raise transfer box on jack and align to guide
studs LRT-41-009.
4.Clean transfer box to gearbox bolt threads.
5.Apply Loctite 290 to bolt and stud threads.
6.Fit and lightly tighten 2 bolts and nut securing
transfer box to gearbox. If new stud is to be
fitted apply Loctite 290 to threads of stud
and tighten to 45 Nm (33 lbf.ft)
7.Remove guide studs, fit and lightly tighten 3
bolts.
8.Tighten bolts and nut by diagonal selection to
45 Nm (33 lbf.ft.
9.Position gearbox RH mounting and tighten
bolts to 85 Nm (63 lbf.ft).
10.Tighten gearbox RH mounting nut to 48 Nm
(35 lbf.ft).
11.Fit nut to LH mounting and tighten to 48 Nm (35
lbf.ft).
12.Remove 4 bolts securing support plate to
gearbox jack.
13.Remove 4 bolts securing support plate LRT-99-
010 to transfer box and remove plate.
14.Clean threads of bottom plate bolts.
15.Apply Loctite 290 to threads of bolts.
16.Fit 4 bolts securing bottom plate and tighten to
25 Nm (18 lbf.ft).
17.Using new washers position breather pipe and
tighten banjo bolt.
18.Connect multiplug to transfer box neutral switch
and secure harness. 19. If fitted - Connect Lucars to differential lock
switch.
20.Connect multiplug and Lucars to reverse lamp
switch and oil temperature sensor.
21.Position high/low ratio selector cable and
secure with 'C' washer and clevis pin.
22.Secure cable to fuel pipes with new cable ties.
23.Clean handbrake back plate and mating face.
24.Position handbrake back plate, fit bolts and
tighten to 75 Nm (55 lbf.ft).
25.Clean handbrake drum.
26.Fit handbrake drum and tighten retaining
screw.
27.Fit front propeller shaft.

+ PROPELLER SHAFTS, REPAIRS,
Propeller shaft - front.
28.Fit rear propeller shaft.

+ PROPELLER SHAFTS, REPAIRS,
Propeller shaft - rear.
29.Clean exhaust silencer and tail pipe mating
faces.
30.Position silencer and secure on mountings,
using a new gasket align to tail pipe, fit nuts
and tighten to 25 Nm (18 lbf.ft).
31.Position rear cross member, fit bolts and
tighten to 26 Nm (19 lbf.ft).
32.Refill transfer box with oil.

+ MAINTENANCE, PROCEDURES,
Transfer box.
33.Fit front exhaust pipe.

+ MANIFOLDS AND EXHAUST
SYSTEMS - V8, REPAIRS, Front pipe.

TRANSFER BOX - LT230SE
41-30 REPAIRS
Gasket - rear cover plate
$% 41.20.30
Remove
1.Mark rear cover to bearing housing for
assembly purposes.
2.Note fitted position of stud nut, remove stud nut
and 5 bolts securing rear cover.
3.Carefully release rear cover from bearing
housing.
Refit
1.Clean rear cover, mating face on bearing
housing and sealant from stud/bolt threads.
2.Apply sealant Part No. STC 3254 to rear cover
mating face.
3.Align reference marks and position rear cover.
4.Apply Loctite 290 to stud/bolt threads, fit rear
cover plate stud nut and bolts and tighten to 25
Nm (18 lbf.ft).
5.Top-up transfer box oil.

+ MAINTENANCE, PROCEDURES,
Transfer box.
Switch - differential lock - Up to 03 MY
$% 41.20.34
Remove
1.Remove front propeller shaft.

+ PROPELLER SHAFTS, REPAIRS,
Propeller shaft - front.
2.Disconnect 2 Lucars from switch.
3.Remove switch and remove nut from switch.
Refit
1.Clean switch and gearbox face.
2.Fit nut to switch with counterbore positioned
towards switch head. The nut acts as a spacer
to ensure that switch setting is correct.
Always ensure that nut is fully tightened to
switch head, (no gap).
3.Apply Hylomar PL 32 sealant to switch thread.
4.Position switch into front output housing until
nut bottoms out on housing.

TRANSFER BOX - LT230SE
REPAIRS 41-31
5.Tighten nut securing differential lock switch to
11 Nm (8 lbf.ft)
6.Connect Lucars to switch.
7.Fit front propeller shaft.

+ PROPELLER SHAFTS, REPAIRS,
Propeller shaft - front.
Cable - high/low selector
$% 41.20.43
Remove
1.Raise vehicle on a ramp.
2.Using a suitable crowsfoot spanner, remove
lock nut and washer securing outer cable to
abutment bracket.
3.Remove clevis pin securing inner cable to
transfer box lever and release cable from
abutment bracket.
4.Release 'C' clip securing outer cable to high/
low lever abutment bracket.
5.Remove clevis pin securing inner cable to high/
low lever.

TRANSFER BOX - LT230SE
41-32 REPAIRS
6.Remove bolt securing outer cable clip to cross
shaft housing, remove cable.
Refit
1.Clean change levers, abutment bracket and
clevis pins.
2.Apply Mobilith SHC 100 grease to inner cable
ends and clevis pins.
3.Position cable and secure to high/low lever
abutment bracket with 'C' clip.
4.Secure inner cable to high/low lever with clevis
pin.
5.Position outer cable clip to cross shaft housing,
tighten bolt to 15 Nm (11 lbf.ft).
6.Adjust high/low selector cable.

+ TRANSFER BOX - LT230SE,
ADJUSTMENTS, Cable - high/low selector.
Oil seal - input shaft
$% 41.20.50
Remove
1.Remove transfer box.

+ TRANSFER BOX - LT230SE,
REPAIRS, Transfer box - V8.

+ TRANSFER BOX - LT230SE,
REPAIRS, Transfer box - Diesel.
2.Lever input shaft oil seal from transfer box.
Refit
1.Clean oil seal recess in transfer gearbox.
2.Lubricate new input shaft oil seal with gearbox
oil.
3.Using tool LRT-37-014 fit input shaft seal to
transfer box.
4.Fit transfer box.

+ TRANSFER BOX - LT230SE,
REPAIRS, Transfer box - V8.

+ TRANSFER BOX - LT230SE,
REPAIRS, Transfer box - Diesel.

TRANSFER BOX - LT230SE
41-34 REPAIRS
Seal - rear output shaft
$% 41.20.54
Remove
1.Remove rear propeller shaft.

+ PROPELLER SHAFTS, REPAIRS,
Propeller shaft - rear.
2.Loosen brake shoe adjuster bolt.
3.Remove screw securing handbrake drum. 4.Remove handbrake drum.
5.Restrain transfer box drive flange using tool
LRT-51-003. Remove and discard drive flange
nut, remove and discard steel and felt washers.
6.Using tool LRT-99-500 if necessary, remove
drive flange from transfer box.
7.Remove seal from transfer box.
Refit
1.Clean seal mating faces.
2.Lubricate seal with gearbox oil.

TRANSFER BOX - LT230SE
REPAIRS 41-35
3.Fit new seal using tool LRT-41-012.
4.Position drive flange, fit new felt and steel
washers.
5.Position tool LRT-51-003 and tighten new
drive flange nut to 148 Nm (109 lbf.ft).
6.Position handbrake drum and tighten screw.
7.Tighten brake shoe adjuster bolt to 25 Nm (18
lbf.ft) then loosen one and a half turns.
8.Check that brake drum is free to rotate.
9.Fit propeller shaft.

+ PROPELLER SHAFTS, REPAIRS,
Propeller shaft - front.
10.Top-up transfer box oil.

+ MAINTENANCE, PROCEDURES,
Transfer box.
Gasket - rear output shaft housing
$% 41.20.55
Remove
1.Drain transfer gearbox oil.

+ MAINTENANCE, PROCEDURES,
Transfer box.
2.Remove rear output shaft seal.

+ TRANSFER BOX - LT230SE,
REPAIRS, Seal - rear output shaft.
3.Mark output shaft housing to main casing for
assembly purposes.
4.Note position of shoulder bolt, remove 6 bolts
securing housing to main casing.
Refit
1.Clean output shaft housing, mating face on
main casing and sealant from bolt threads.
2.Apply sealant, Part No. STC 3254 to mating
flange on output shaft housing.
3.Fit output shaft housing to main casing.
4.Apply Loctite 290 to bolt threads.
5.Fit output shaft housing bolts and tighten by
diagonal selection to 45 Nm (33 lbf.ft).
6.Fit rear output shaft seal.

+ TRANSFER BOX - LT230SE,
REPAIRS, Seal - rear output shaft.
7.Fill transfer gearbox with oil.

+ MAINTENANCE, PROCEDURES,
Transfer box.

TRANSFER BOX - LT230SE
41-36 REPAIRS
Solenoid - interlock - Up to 03 MY
$% 41.20.63
Remove
1.Raise vehicle on ramp.
2.Disconnect multiplug from interlock solenoid.
3.Release multiplug retainer from mounting plate
on transfer box.
4.Remove 4 bolts securing solenoid cover,
remove cover and Belleville washer.
5.Remove solenoid.
Refit
1.Clean solenoid cover and mating face.
2.Position solenoid in main casing.
3.Apply sealant, Part No. STC 3254 to solenoid
cover.
4.Fit cover and Belleville washer.
5.Fit bolts securing interlock solenoid and tighten
to 10 Nm (7 lbf.ft).
6.Connect and secure multiplug.
7.Lower vehicle on ramp.
Sensor - neutral
$% 41.20.64
Remove
1.Raise vehicle on ramp.
2.Disconnect multiplug from neutral sensor.
3.Remove sensor and discard sealing washer.
Refit
1.Clean sensor threads.
2.Fit new washer and apply Hylosil PL 32 to
sensor threads.
3.Fit and tighten sensor to 25 Nm (18 lbf.ft).
4.Lower vehicle on ramp.