oil capacities LAND ROVER DISCOVERY 1995 User Guide

41TRANSFER GEARBOX
2
FAULT DIAGNOSIS PROCEDURE
Prior to road test
1.Check oil level in transfer box is correct.
2.Check tightness of level and drain plugs.
3.Check breather system for blockage. To validate
the system the pipe must be removed,
inspected, rectified as necessary and refitted.
4.Remove all traces of oil from exterior of transfer
box.
Take vehicle for short road test.
5.Identify source of leaks and rectify as follows.
Front or rear output seal leaking:-
1.Drain the oil and remove the leaking output
flange.
2.Inspect the seal track on the flange for surface
damage. If damaged renew component.
3.Remove and discard the oil seal.
4.Inspect the seal locating bore and remove any
sharp edges which may damage the new oil
seal.
5.Fit new seal.
6.Fit the output flange and all the other parts.
7.Add oil to correct level into the gearbox.
See
LUBRICANTS, FLUIDS AND CAPACITIES,
Information, Recommended Lubricants and
Fluids
Cover plate gasket leaking.
1.Drain the oil and remove the leaking cover plate.
2.Remove all traces of joint sealant from both joint
faces.
3.Degrease all components and apply a thin film of
Hylomar sealant, to both joint faces.
4.Apply thread sealant to the bolts which come
into contact with gearbox oil.
5.Refit cover plate.
CAUTION: Care must be taken not to
overtighten the fixings.Leak between the main and transfer gearboxes.
1.Site vehicle onto a ramp [hoist].
2.Select neutral in transfer box and select 4th gear
in the main gearbox.
3.Run engine at 2000 rpm with the clutch/drive
engaged.
4.Observe joint between the main and transfer
boxes.
5.If oil leak is found establish if it is gear oil.
6.If so, the leak is originating from the transfer box.
7.Check the two inner (main/transfer) bolts are oil
tight, as these holes are tapped through into the
main transfer case.
8.Remove the transfer box to inspect the
mainshaft collar seal track condition, and the
front face of the transfer case for porosity.
See
Repair, LT230T Transfer Gearbox
9.If these areas require servicing, the transfer
gearbox input seal must also be renewed.
CAUTION: Avoid damaging the new seal
lip and ensure the seal is fitted flush with
the machined face. Also ensure the new
seal is not damaged when refitting the transfer
gearbox.
10.If red A.T.F type oil is seen leaking during the
workshop test, investigate the main gearbox for
cause of leak.
Detent plug or electrical switch leaks.
1.Detent plugs and electrical switches do not
usually leak. It must be noted that they fit into
open tapped holes in the transfer case and
therefore should be considered when looking for
the source of the leak.

TRANSFER GEARBOX
3
REPAIR Refit
36.Select 'P' in main gearbox, with low range and
differential lock selected in transfer gearbox.
37.Secure transfer gearbox to adaptor plate on
lifting hoist.
38.Ensure joint faces of transfer and main
gearboxes are clean and guide studs 18G 1425
are fitted.
39.Raise hoist until transfer gearbox can be located
over guide studs to main gearbox. At the same
time locate high/low lower link to yoke.
40.Remove guide studs and secure transfer
gearbox to main gearbox.41.Complete refitting by reversing removal
procedure, noting the following important points.
42.After removal of adaptor plate from transfer
gearbox, clean threads of four bottom cover
bolts, coat threads with Loctite 290 and fit
together with spring washers. Tighten to
25Nm
43.Add correct grade of oil to transfer gearbox to oil
level plug hole.
See LUBRICANTS, FLUIDS
AND CAPACITIES, Information,
Recommended Lubricants and Fluids
44.Check main gearbox oil level.
45.Check operation of parking brake and adjust as
necessary.
See SECTION 10, Maintenance,
Vehicle Interior

ZF
3
REPAIR 19.Disconnect rear propeller shaft to output flange,
and tie to one side.
20.Repeat instructions 18 and 19 on front propeller
shaft to main gearbox.
21.Remove bolts retaining silencer front and rear
securing brackets and tie silencer to one side.
22.Disconnect oil cooler feed and return pipes from
bottom and side of main gearbox.
23.Release cooler pipes from clamp at engine sump
and remove distance piece.
24.Blank pipe ends and unions.
25.Move oil cooler pipes clear of transmission and
tie aside.
26.Disconnect selector cable from operating lever.
27.Disconnect inhibitor switch at multiplug.
28.Attach adaptor plate to hoist.
29.Remove two bolts from transfer gearbox rear
cover.
30.Raise hoist to align adaptor plate with transfer
gearbox and transmission. Secure to transfer
gearbox at rear cover with two bolts removed.
31.Adjust hoist to take weight of transmission.
32.Remove nuts and bolts securing right transfer
gearbox mounting bracket to chassis.
33.Repeat for the left mounting bracket. Removal of
these fixings will also free speedometer
transducer bracket
34.Remove right side mounting bracket to flexible
mounting rubber retaining nut.
35.Lower hoist until rear brake drum clears
passenger footwell. Check engine does not
crush any components while lowering.
36.Remove clip and clevis pin from park brake
lever.
37.Remove clip securing outer brake cable
38.The park brake cable is now free.
39.Disconnect leads from transfer gearbox
temperature sensor and differential lock warning
light switch.
40.Remove ties securing breather pipes to harness.
41.Remove bell housing access plate complete with
gasket.
42.Rotate engine, using crankshaft pulley, until two
access holes are visible in drive plate/ring gear
assembly through bell housing bottom cover
opening.
43.Identify an access hole and bolt hole to aid
reassembly.
44.Remove bolts securing drive plate to convertor
through access holes.
45.Rotate crankshaft half turn to access and
remove remaining bolts.
46.Disconnect oil dipstick tube at main gearbox.
47.Remove bolt at bell housing and detach dipstick
tube. Blank pipe end and union.
48.Position hoist jack channel under engine and
support using a wooden block.
49.Remove bell housing to engine securing bolts,
also detach harness bracket from bell housing.
50.Ease transmission rearwards to allow access to
secure torque converter in bell housing.
51.Lower hoist and complete removal of
transmission.
Refit
52.Ensure torque converter is retained in bell
housing.
53.Secure transmission to adaptor plate on lifting
hoist.
54.Raise hoist and locate transmission with engine.
55.Remove torque converter retainer.
56.Complete attachment of transmission to engine
and fit bell housing bolts. Fit the dipstick tube
bracket and harness bracket to their respective
bolts.
57.Complete refitting by reversing removal
procedure. Note the following important points.
58.Drive plate to torque converter bolts are to be
coated with Loctite 290 prior to assembly.
59.Refill transfer and main gearboxes with correct
grade oil.
See LUBRICANTS, FLUIDS AND
CAPACITIES, Information, Recommended
Lubricants and Fluids
60.Check operation of parking brake and adjust as
necessary.
See SECTION 10, Maintenance,
Vehicle Interior

ZF
7
REPAIR Accessories removal/fitting
If fitting a replacement transmission assembly to the
vehicle, remove the following items from the existing
assembly and fit to the replacement.
CAUTION: It is important to remove the
spacer from the extension shaft and fit
onto the replacement unit.
50.Breather pipe union and washers from main
gearbox.
51.Breather pipe, union and washers from transfer
gearbox.
52.Main gearbox selector lever.
53.RH mounting bracket assembly.
54.Oil cooler pipe unions.
55.Fit blanks to all apertures where unions have
been removed and blank off pipe ends.
Refit
1.Fit transmission to cradle and hoist.
2.Locate hoist under vehicle and remove torque
convertor retaining strap.
3.Ensure low range gear is engaged.
4.Apply approved sealant to bell housing face.
5.Carefully raise assembly, align bell housing with
flywheel housing and bring mating faces
together.
6.Fit nuts and bolts to secure transmission to
engine.
7.Locate electrical wiring and breather pipes to
position.
8.Secure kick down cable clip to bell housing.
9.Raise hoist sufficiently to take weight.
10.Remove block and jack from engine sump.
11.Fit filler/dipstick tube to gearbox sump and
secure bracket to bell housing.
12.Apply Loctite to torque convertor bolts
13.Working through starter aperture refit the four
torque convertor to flexible drive securing bolts,
rotating crankshaft to gain access to bolt
locations.
14.Refit starter and heatshield.
15.Secure breather pipes and harness with ties.
16.Fit left hand mounting bracket assembly to
gearbox.
17.Raise transmission and support with a suitable
ramp [hoist] jack.
18.Remove two bolts securing transmission to
cradle, lower hoist and remove from under
vehicle.
19.Apply Loctite to above bolts and fit to transfer
gearbox input bearing support plate.
20.Fit chassis cross member.21.Secure gearbox mounting brackets to chassis
cross member.
22.Remove ramp [hoist] jack.
23.Connect electrical leads to differential lock
switch.
24.Connect inhibitor switch multi-plug.
25.Connect selector cable to lever on side of
gearbox.
26.Connect oil cooler pipes to gearbox and secure
retaining bracket to gearbox sump.
27.Secure silencer to chassis and refit exhaust front
pipe.
28.Refit front propeller shaft to transfer gearbox.
29.Refit rear propeller shaft.
See PROPELLER
SHAFTS, Overhaul, Flexible Coupling
30.Connect speedometer cable to transfer gearbox.
31.Refill transfer gearbox with correct grade of
lubricating oil.
See LUBRICANTS, FLUIDS
AND CAPACITIES, Information,
Recommended Lubricants and Fluids
32.Lower ramp [hoist] to ground level.
33.Reconnect turbo-charger hose to inter-cooler.
34.Reconnect top hose to radiator.
35.Refill cooling system with correct mixture of
coolant.
See LUBRICANTS, FLUIDS AND
CAPACITIES, Information, Recommended
Lubricants and Fluids
36.Reconnect kick down cable to fuel injection
pump.
37.Secure breather pipe clip to rear of cylinder
head.
38.Engage harness with clips along top of
bulkhead.
39.On left hand drive vehicles only, connect
multi-plug to top of brake fluid reservoir.
40.Refit insulation pad to rocker cover and inlet
manifold, secure with oil filler cap.
41.Refit gaiter and knob to transfer gear lever.
42.Select high range gear.
43.Reconnect battery terminals.
44.Refill main gearbox with correct grade of
lubricating oil.
See LUBRICANTS, FLUIDS
AND CAPACITIES, Information,
Recommended Lubricants and Fluids

ZF
9
REPAIR OIL SUMP
Service repair no - 44.24.05
Remove
1.Site vehicle on a four post ramp [hoist].
2.Disconnect battery negative lead.
3.Raise vehicle.
4.Drain oil and refit plug with new seal.
5.Detach heat shield at front exhaust pipe to
manifold.
6.Disconnect electrics from Lambda sensors.
7.Remove catalytic converter assembly.
8.Remove chassis cross-member from under
gearbox.
9.Disconnect dipstick tube at oil sump. Loosen
securing bolt at bell housing and move dipstick
aside.
10.Remove clamps securing oil sump. Note their
locations for refit and withdraw sump.
11.Remove gasket and clean gasket mating faces.Refit
12.Refit oil sump using a new gasket.
13.Connect dipstick tube to oil sump and tighten
bolt at bell housing.
14.Refit chassis cross member.
15.Refit catalytic converter assembly
16.Connect electrics to Lambda sensors.
17.Connect heat shield front pipe to manifold.
18.Connect battery.
19.Refill gearbox using correct grade of oil.
See
LUBRICANTS, FLUIDS AND CAPACITIES,
Information, Recommended Lubricants and
Fluids

44AUTOMATIC GEARBOX
10
REPAIR OIL SCREEN
Service repair no - 44.24.07
Renew
1.Site vehicle on a four post ramp [hoist].
2.Disconnect battery negative lead.
3.Raise vehicle.
4.Drain oil and refit plug with new seal.
5.Detach heat shield at front exhaust pipe to
manifold.
6.Disconnect electrics from Lambda sensors.
7.Remove catalytic converter assembly.
8.Remove chassis cross-member from under
gearbox.
9.Disconnect dipstick tube at oil sump. Loosen
securing bolt at bell housing and move dipstick
aside.
10.Remove clamps securing oil sump. Note their
locations for refit and withdraw sump.
11.Remove gasket and clean gasket mating faces.
12.Remove securing screws and detach oil screen
and suction pipe, taking care to retain suction
pipe spacer, discard 'O' ring seal.13.Detach suction pipe from oil screen, discard 'O'
ring seal.
14.Clean oil screen and blow out with airline.
15.Clean suction pipe.
16.Fit new 'O' ring seals to oil screen using light
grease to aid assembly.
17.Fit oil screen and suction pipe with spacer and
secure with three bolts.
18.Refit oil sump using a new gasket.
19.Connect dipstick tube to oil sump and tighten
bolt at bell housing.
20.Refit chassis cross-member.
21.Refit catalytic converter assembly
22.Connect electrics to Lambda sensors.
23.Connect heat shield front pipe to manifold.
24.Connect battery.
25.Refill gearbox oil system using correct grade of
oil.
See LUBRICANTS, FLUIDS AND
CAPACITIES, Information, Recommended
Lubricants and Fluids

44AUTOMATIC GEARBOX
12
REPAIR Oil seal replacement
14.Remove circlips and springs from control unit.
Note locations of long and short springs.
15.Using seal replacer/remover LST113 remove
and discard seals.
16.Clean control unit, springs and circlips and check
that they are satisfactory for further use.
17.Fit new seals to control unit using LST113,
ensure seals are fully seated.
18.Fit springs to locations noted during removal and
secure with circlips.
Refit
19.Fit control unit to gearbox, locating throttle valve
behind cam and engaging selector quadrant with
manual valve.
20.Loosely fit securing screws.21.Manually open throttle linkage to full throttle
position.
22.Engage special tool LST 109 between control
unit and throttle valve pin.
23.Set correct distance between control unit and
cam.
24.Remove special tool and close throttle.
25.Fit new 'O' ring seals to oil screen using light
grease to aid assembly.
26.Fit oil screen and suction pipe with spacer and
secure with three bolts.
27.Refit oil pan using a new gasket.
28.Connect dipstick tube to oil sump and tighten
bolt at bell housing.
29.Refit chassis cross member.
30.Refit catalytic converter assembly
31.Connect electrics to Lambda sensors.
32.Connect heat shield front pipe to manifold.
33.Connect battery.
34.Refill gearbox oil system using correct grade of
oil.
See LUBRICANTS, FLUIDS AND
CAPACITIES, Information, Recommended
Lubricants and Fluids

ZF
13
REPAIR KICKDOWN CABLE
Service repair no - 44.15.01
Remove
1.Site vehicle on a four post ramp [hoist].
2.Select neutral 'N' gear lever.
3.Disconnect battery negative lead.
4.Disconnect kickdown cable at throttle linkage.
5.Release outer cable locknut.
6.Disconnect cable from mounting bracket.
7.Release cable from bracket attached to cylinder
head.
8.Feed cable through to underside of vehicle.
9.Raise vehicle on ramp [hoist].
10.Drain oil and refit plug with new seal.
11.Detach heat shield at front exhaust pipe to
manifold.
12.Disconnect electrics from Lambda sensors.
13.Remove catalytic converter assembly.
14.Remove chassis cross-member from under
gearbox.
15.Disconnect dipstick tube at oil sump. Loosen
securing bolt at bell housing and move dipstick
aside.
16.Remove clamps securing oil sump. Note their
locations for refit, and withdraw sump.
17.Pull kickdown inner cable to fully open valve
cam. Wedge cam in this position.
18.Release cable from cam by pushing inner cable
into outer casing and detaching cable nipple
from cam.
19.Using special tool LST112 compress cable tangs
and remove cable from gearbox.
20.If cable is to be refitted remove 'O' ring seal and
clean cable assembly.
Refit
21.Fit new 'O' ring seal to cable and lubricate seal.
22.Fit cable to gearbox casing ensuring it is
correctly seated.
23.Fit inner cable nipple to its location on cam.
NOTE: When a new cable is fitted, to help
locate nipple to cam, introduce a curve
into the cable. Do not bend or kink cable.24.Remove wedge from cam and ensure nipple
remains engaged.
25.Feed free end of cable assembly into engine
compartment.
26.Refit oil pan using a new gasket.
27.Connect dipstick tube to oil sump and tighten
bolt at bell housing.
28.Refit chassis cross-member
29.Refit catalytic converter assembly
30.Connect electrics to Lambda sensors.
31.Connect heat shield front pipe to manifold.
32.Lower vehicle on ramp [hoist].
33.Fit cable to bracket at cylinder head.
34.Locate cable in mounting bracket, do not tighten
locknut.
35.Fit cable to throttle linkage.
36.Ensure throttle linkage is fully closed.
37.Adjust outer cable to achieve a gap of 0,25 to
1,25mm (dimension 'A') between end of outer
cable and crimped collar on inner cable.
38.Tighten locknuts and recheck gap.
NOTE: If fitting a new cable, and collar on
inner cable is loose, measure distance 'B'
on old cable. Crimp collar on new cable to
this dimension.
39.Reconnect battery negative lead.
40.Refill gearbox oil using correct grade of oil.
See
LUBRICANTS, FLUIDS AND CAPACITIES,
Information, Recommended Lubricants and
Fluids

44AUTOMATIC GEARBOX
14
REPAIR EXTENSION HOUSING
Service repair no - 44.20.18
Remove
1.Remove transfer gearbox.
See TRANSFER
GEARBOX, Repair, LT230T Transfer Gearbox
2.Drain oil from automatic gearbox.
3.Remove bolts securing left hand mounting
bracket to extension housing and withdraw
bracket.
4.Remove transfer gear lever housing securing
bolts and move housing aside.
5.Remove securing bolts and withdraw extension
housing from over coupling shaft. Remove and
discard gasket.
6.Place extension housing on bench and remove
oil seal.
7.Ensure that all surfaces are clean and housing is
free from damage. If damage is found and
housing has to be renewed remove dowels from
face of existing housing and fit to new housing.
8.Using special tool LST108 fit new oil seal to
housing.Refit
9.Fit extension housing to gearbox, with a new
gasket, ensuring oil seal is not damaged by
extension shaft.
10.Secure housing with nine bolts. Tighten to
23
Nm.
11.Refit transfer gear lever housing to top of
extension housing. Tighten to
25 Nm.
12.Refit mounting bracket to extension housing.
Tighten to
52 Nm.
13.Refit transfer gear box.See TRANSFER
GEARBOX, Repair, LT230T Transfer Gearbox
14.Refill automatic gearbox lubrication system with
correct grade of oil.
See LUBRICANTS,
FLUIDS AND CAPACITIES, Information,
Recommended Lubricants and Fluids

ZF
15
REPAIR GOVERNOR ASSEMBLY
Service repair no - 44.22.01
Remove
1.Remove transfer gearbox.
See TRANSFER
GEARBOX, Repair, LT230T Transfer Gearbox
2.Drain oil from automatic gearbox.
3.Remove bolts securing left hand mounting
bracket to extension housing and withdraw
bracket.
4.Remove transfer gear lever housing securing
bolts and move housing aside.
5.Remove extension housing ensuring seal is not
damaged, remove and discard gasket.
6.Remove extension shaft retaining bolt, withdraw
shaft and discard 'O' ring seal. If Tdi vehicle
remove spacer.
7.Remove governor assembly.
8.Remove park gear from governor assembly.
9.Detach governor housing.
10.Remove security clip and counter weight.
11.Remove and discard 'O' ring seal from output
shaft and three seal rings from 'F' clutch
housing.
12.Clean all components.
13.If necessary detach parking pawl by removing
guide plates and withdrawing mechanism.Refit
14.Refit parking pawl mechanism if removed.
15.Fit and lubricate new seal rings to 'F' clutch
housing shaft, ensure they are correctly seated.
16.Apply petroleum jelly to a new 'O' ring seal. Fit to
output shaft
17.Fit park gear to governor assembly tightening
screws to correct torque.
18.Fit governor assembly to output shaft.
19.Fit extension shaft with spacer if Tdi. Fit new 'O'
ring under bolt head.
20.Fit extension housing, avoid damaging seal.
Tighten to
23 Nm.
21.Refit transfer gear lever housing to extension
housing.
22.Refit mounting bracket to extension housing.
Tighten to
52 Nm.
23.Refit transfer gearbox.See TRANSFER
GEARBOX, Repair, LT230T Transfer Gearbox
24.Refill automatic gearbox with correct grade of oil.
See LUBRICANTS, FLUIDS AND
CAPACITIES, Information, Recommended
Lubricants and Fluids