
INTERMEDIATE REDUCTION DRIVE
REPAIRS 41-7
Intermediate reduction drive (IRD) unit -
K1.8
$% 41.25.01.99
Remove
1.Disconnect battery earth lead.
2.Remove rear beam.
+ FRONT SUSPENSION, REPAIRS,
Rear beam.
3.Remove exhaust front pipe.
+ MANIFOLDS & EXHAUST SYSTEMS
- K SERIES 1.8, REPAIRS, Exhaust pipe -
front.
4.Drain fluid from IRD.
+ INTERMEDIATE REDUCTION
DRIVE, ADJUSTMENTS, Intermediate
reduction drive (IRD) fluid - drain & refill -
Non NAS.
5.Drain gearbox oil.
+ MANUAL GEARBOX - PG1,
ADJUSTMENTS, Gearbox oil - drain and
refill.
6.Remove 3 bolts securing RH splash shield to
body and remove shield.7.Secure LRT-54-026 to drive shaft inboard joint.
Using a suitable lever, release drive shaft from
IRD.
8.With assistance, pull hub outwards and release
drive shaft from IRD.
CAUTION: Care must be taken not to
damage oil seal when removing drive shaft
from IRD.
9.Remove and discard drive shaft circlip.

INTERMEDIATE REDUCTION DRIVE
REPAIRS 41-9
24.Remove 3 bolts securing IRD support bracket
to sump and remove bracket.
25.Remove 4 bolts securing IRD.
26.With assistance, release IRD from gearbox and
remove.
27.Remove and discard 'O' ring from IRD.
Refit
1.Clean mating faces of IRD and gearbox.
2.Lubricate and fit new 'O' ring
3.With assistance, fit IRD.
4.Fit bolts securing IRD to gearbox and tighten
sufficiently only to pull mating faces of IRD and
gearbox together at this stage.
5.Fit IRD support bracket and tighten bolts
sufficiently only to pull mating faces together.
6.Final tighten bolts securing IRD to gearbox to
90 Nm (66 lbf.ft).
7.Final tighten bolts securing IRD support bracket
in following sequence:
l5 bolts securing IRD support bracket to IRD
50 Nm (37 lbf.ft)
l1 bolt securing support bracket to cylinder
block to 45 Nm (33 lbf.ft)
l3 bolts securing support bracket to sump 88
Nm (65 lbf.ft).8.Position engine lower steady bracket to sump,
fit and tighten bolts to 100 Nm (74 lbf.ft).
9.Fit engine lower steady, fit bolt securing steady
to gearbox bracket but do not tighten at this
stage.
10.Connect coolant hoses and secure with clips.
11.Connect breather hose to IRD housing.
12.Fit mass damper to pinion housing, fit nuts and
tighten to 25 Nm (18 lbf.ft).
13.Clean propeller shaft flange and mating face.
14.Fit propeller shaft to IRD flange and align
marks. Tighten nuts and bolts to 40 Nm (30
lbf.ft).
15.Inspect drive shaft oil seal, renew if worn or
damaged.
16.Clean drive shaft and flange splines.
17.Fit new circlip to drive shaft.
18.With assistance, pull hub outwards, align drive
shaft and fit to IRD taking care not to damage
oil seal.
CAUTION: Pull the drive shaft to ensure the
circlip is fully engaged and retains the shaft.
19.Fit splash shield and secure with bolts.
20.Fit exhaust front pipe.
+ MANIFOLDS & EXHAUST SYSTEMS
- K SERIES 1.8, REPAIRS, Exhaust pipe -
front.
21.Fit rear beam.
+ FRONT SUSPENSION, REPAIRS,
Rear beam.
22.Final tighten bolt securing lower engine steady
to sump bracket to 80 Nm (59 lbf.ft).
23.Fill IRD to correct level with fluid.
+ INTERMEDIATE REDUCTION
DRIVE, ADJUSTMENTS, Intermediate
reduction drive (IRD) fluid - drain & refill -
Non NAS.
24.Refill gearbox with oil.
+ MANUAL GEARBOX - PG1,
ADJUSTMENTS, Gearbox oil - drain and
refill.
25.Connect battery earth lead.
26.Refill cooling system.
+ COOLING SYSTEM - K SERIES 1.8,
ADJUSTMENTS, Coolant - refill system.
M12 7167
M41 7698

INTERMEDIATE REDUCTION DRIVE
41-10 REPAIRS
Intermediate reduction drive (IRD) unit -
KV6
$% 41.25.01.99
Remove
1.Disconnect battery earth lead.
2.Remove rear beam.
+ FRONT SUSPENSION, REPAIRS,
Rear beam.
3.Remove exhaust front pipe.
+ MANIFOLDS & EXHAUST SYSTEMS
- K SERIES KV6, REPAIRS, Front pipe - Non
NAS.
4. NAS models: Remove RH catalytic converter.
+ EMISSION CONTROL, REPAIRS,
Catalytic converter - RH - KV6 - NAS.
5. NAS models:Remove LH exhaust manifold
gasket.
+ MANIFOLDS & EXHAUST SYSTEMS
- K SERIES KV6, REPAIRS, Gasket(s) -
exhaust manifold - LH - NAS.
6.Drain fluid from IRD.
+ INTERMEDIATE REDUCTION
DRIVE, ADJUSTMENTS, Intermediate
reduction drive (IRD) fluid - drain & refill -
Non NAS.
+ INTERMEDIATE REDUCTION
DRIVE, ADJUSTMENTS, Intermediate
reduction drive (IRD) lubrication system -
drain & refill - NAS.
7.Drain gearbox fluid.
+ AUTOMATIC GEARBOX - JATCO,
ADJUSTMENTS, Gearbox fluid - drain &
refill.
8.Remove 3 bolts securing RH splash shield to
body and remove shield.9.Secure LRT-54-026 to drive shaft inboard joint.
Using a suitable lever, release drive shaft from
IRD.
10.With assistance, pull hub outwards and release
drive shaft from IRD.
CAUTION: Care must be taken not to
damage oil seal when removing drive shaft
from IRD.
11.Remove and discard drive shaft circlip.

INTERMEDIATE REDUCTION DRIVE
REPAIRS 41-13
Refit
1.Clean mating faces of IRD and gearbox.
2.Lubricate and fit new 'O' ring
3.With assistance, fit IRD.
4.Fit bolts securing IRD to gearbox and tighten
sufficiently only to pull mating faces of IRD and
gearbox together at this stage.
5.Fit IRD support bracket and tighten bolts
sufficiently only to pull mating faces together.
6.Final tighten bolts securing IRD to gearbox to
90 Nm (66 lbf.ft).
7.Final tighten bolts securing IRD support
bracket in following sequence:
l5 bolts securing support bracket to IRD 50
Nm (37 lbf.ft)
l2 bolts securing support bracket to engine
front mounting bracket 50 Nm (37 lbf.ft)
l3 bolts securing support bracket to sump 88
Nm (65 lbf.ft).
8.Position lower engine steady, 'TOP' mark
uppermost. Fit bolt but do not tighten at this
stage.
9.Connect coolant hoses and secure with clips.
10.Connect breather hose to IRD housing.
11.Fit manifold heat shield and fit nut securing
heat shield to pinion housing finger tight.
12.Fit bolts securing manifold heat shield to IRD
support bracket and tighten to 9 Nm (7 lbf.ft).
13.Fit nut securing heat shield to IRD and tighten
to 45 Nm (33 lbf.ft).
14.Final tighten nut securing manifold heat shield
to IRD pinion housing to 25 Nm (18 lbf.ft).
15.Clean propeller shaft flange and mating face.
16.Fit propeller shaft to IRD flange and align
marks. Tighten nuts and bolts to 40 Nm (30
lbf.ft).
17.Inspect drive shaft oil seal, renew if worn or
damaged.
18.Clean drive shaft and flange splines.
19.Fit new circlip to drive shaft.
20.With assistance, pull hub outwards, align drive
shaft and fit to IRD taking care not to damage
oil seal.
CAUTION: Pull the drive shaft to ensure the
circlip is fully engaged and retains the shaft.21.Fit splash shield and secure with bolts.
22.Fit exhaust front pipe.
+ MANIFOLDS & EXHAUST SYSTEMS
- K SERIES KV6, REPAIRS, Front pipe - Non
NAS.
23.Fit rear beam.
+ FRONT SUSPENSION, REPAIRS,
Rear beam.
24.Final tighten bolt securing lower engine steady
to IRD support bracket to 100 Nm (74 lbf.ft).
25.Fill IRD to correct level with fluid.
+ INTERMEDIATE REDUCTION
DRIVE, ADJUSTMENTS, Intermediate
reduction drive (IRD) fluid - drain & refill -
Non NAS.
+ INTERMEDIATE REDUCTION
DRIVE, ADJUSTMENTS, Intermediate
reduction drive (IRD) lubrication system -
drain & refill - NAS.
26. NAS models: Fit RH catalytic converter.
+ EMISSION CONTROL, REPAIRS,
Catalytic converter - RH - KV6 - NAS.
27. NAS models: Fit LH exhaust manifold gasket.
+ MANIFOLDS & EXHAUST SYSTEMS
- K SERIES KV6, REPAIRS, Gasket(s) -
exhaust manifold - LH - NAS.
28.Fill gearbox with fluid.
+ AUTOMATIC GEARBOX - JATCO,
ADJUSTMENTS, Gearbox fluid - drain &
refill.
29.Connect battery earth lead.
30.Refill cooling system.
+ COOLING SYSTEM - K SERIES KV6,
ADJUSTMENTS, Coolant - drain and refill.

INTERMEDIATE REDUCTION DRIVE
REPAIRS 41-21
12.Using flanged end of LRT-41-015 fit outer seal
to depth dictated by tool flange.
CAUTION: Use end protector of LRT-41-015
to avoid damage to the working surfaces of
the tool.
13.Remove oil seal protector.
14.Fit IRD.
+ INTERMEDIATE REDUCTION
DRIVE, REPAIRS, Intermediate reduction
drive (IRD) unit - K1.8.
+ INTERMEDIATE REDUCTION
DRIVE, REPAIRS, Intermediate reduction
drive (IRD) unit - Td4.
+ INTERMEDIATE REDUCTION
DRIVE, REPAIRS, Intermediate reduction
drive (IRD) unit - KV6.
Seal - pinion gear
$% 41.29.04
Remove
1.Remove pinion housing.
+ INTERMEDIATE REDUCTION
DRIVE, REPAIRS, Seal - pinion gear
housing - Td4.
+ INTERMEDIATE REDUCTION
DRIVE, REPAIRS, Seal - pinion gear
housing - K1.8.
+ INTERMEDIATE REDUCTION
DRIVE, REPAIRS, Seal - pinion gear
housing - KV6 - Non NAS.
+ INTERMEDIATE REDUCTION
DRIVE, REPAIRS, Seal - pinion gear
housing - KV6 - NAS.
CAUTION: Before dismantling the pinion
housing, measure the turning torque on
existing bearings.
2.Attach pinion housing to suitable mounting
plate and secure mounting plate in vice.
3.Check pinion torque to turn figure.
4.Reference mark pinion flange and pinion shaft
for assembly purposes.
5.Restrain pinion flange using LRT-51-003.
6.Remove and discard nut.
7.Position pinion housing onto press, fit suitable
adaptor on end of pinion shaft, press pinion
shaft from drive flange and housing.
8.Remove and discard collapsible spacer.
9.Using a suitable lever, remove pinion oil seal.
CAUTION: Take care to avoid damage to oil
seal recess.
10.Remove pinion bearing inner race.

INTERMEDIATE REDUCTION DRIVE
41-22 REPAIRS
Refit
1.Clean pinion shaft, drive flange and housing.
2.Clean oil seal recess.
3.Lubricate and fit bearing to pinion housing.
4.Lubricate new seal.
5.Using a suitable adapter, press seal into
housing.
CAUTION: Oil seal must be flush with end of
pinion housing.
6.Assemble pinion to housing using new
collapsible spacer.
7.Lightly lubricate drive flange splines with
Molybdenum Disulphide grease.
8.Align pinion to drive flange reference marks
and press flange onto pinion shaft until a 2 mm
clearance exists in bearings.
9.Fit pinion assembly to mounting plate and
secure in vice.
10.Fit new pinion nut, hold pinion drive flange
using LRT-51-003 and tighten pinion nut to 150
Nm (111 lbf.ft).
11.Check pinion torque to turn figure.
NOTE: Figure for new bearings is 180 to 200
Ncm.
If original bearing figure is above 20 to 30 Ncm
and below new bearing figure, set to figure
recorded.
If original bearing is below 20 Ncm set to 20 to
30 Ncm.12.If turning torque is too low, carefully tighten nut
and recheck reading. If turning torque is too
high, pinion assembly will have to be
dismantled and a new collapsible spacer fitted.
Reassemble using new nut and recheck turning
torque.
13.Check drive flange run-out using a Dial Test
Indicator (DTI).
CAUTION: The drive flange run-out should
not exceed 0.05 mm.
14.Remove pinion housing from vice and
mounting plate.
15.Fit pinion housing.
+ INTERMEDIATE REDUCTION
DRIVE, REPAIRS, Seal - pinion gear
housing - Td4.
+ INTERMEDIATE REDUCTION
DRIVE, REPAIRS, Seal - pinion gear
housing - K1.8.
+ INTERMEDIATE REDUCTION
DRIVE, REPAIRS, Seal - pinion gear
housing - KV6 - Non NAS.
+ INTERMEDIATE REDUCTION
DRIVE, REPAIRS, Seal - pinion gear
housing - KV6 - NAS.

INTERMEDIATE REDUCTION DRIVE
REPAIRS 41-23
Seal - driveshaft - LH - Td4 & KV6 models
$% 41.29.08
Remove
1.Remove LH drive shaft.
+ DRIVESHAFTS, REPAIRS, Shaft
with both joints - LH.
2.Carefully remove and discard oil seal, take care
not to damage oil seal recess.
Refit
1.Clean oil seal recess.
CAUTION: Oil seal is waxed on outer
diameter and must not be lubricated before
fitting.
2. Models with manual gearbox:Using LRT-54-
025 and LRT-99-003, fit new oil seal.
3. Models with automatic gearbox: Using LRT-
44-027, fit new oil seal.4.Fit LH drive shaft.
+ DRIVESHAFTS, REPAIRS, Shaft
with both joints - LH.
5.Top-up gearbox fluid level.
+ MAINTENANCE, MAINTENANCE,
Automatic Gearbox – JATCO.

INTERMEDIATE REDUCTION DRIVE
41-24 REPAIRS
Seal - drive shaft - LH - K1.8
$% 41.29.08
Remove
1.Remove LH drive shaft.
+ DRIVESHAFTS, REPAIRS, Shaft
with both joints - LH.
2.Carefully remove oil seal from differential
housing, discard oil seal.
Refit
1.Thoroughly clean oil seal recess in differential
housing, splines and oil seal running surface on
drive shaft.
2.Fit handle LRT-37-027 into seal replacer
adaptor, LRT-37-032.
3.Position new oil seal onto LRT-37-032 with
sealing lip facing towards differential housing.
4.Carefully drift oil seal into housing until fully
seated in recess.5.Fully insert oil seal protector tool, Unipart TRV
100060, into differential oil seal so that oil seal
lip is protected and that the split end of tool is
butted correctly.
6.Fit LH drive shaft.
+ DRIVESHAFTS, REPAIRS, Shaft
with both joints - LH.