
ENGINE - K SERIES KV6
12-3-64 REPAIRS
Refit
NOTE: Following front or rear timing belt 
refitment, it is possible that, after rotating the 
engine and positioning the crankshaft pulley to 
the 'SAFE' position, the timing marks on the 
rear timing gears may be misaligned. This 
misalignment is acceptable provided that the 
timing belt refitting procedure was carried out 
correctly.
1.Clean camshaft gears and hubs, crankshaft 
gear, tensioner and water pump pulleys.
CAUTION: If the sintered gears have been 
subjected to prolonged oil contamination, 
they must be soaked in a solvent bath and 
then thoroughly washed in clean solvent 
before refitting. Because of the porous 
construction of sintered material, oil 
impregnated in the gears will emerge and 
contaminate the belt.
2.Fit hubs to camshaft gears and fit gears to 
camshafts. Fit new bolts and tighten sufficiently 
to allow gears to rotate without tipping.
3.Position timing belt to crankshaft gear.
NOTE: To prevent the timing belt from 
disengaging from the crankshaft gear when 
fitting, fit a suitable wedge between the belt and 
oil pump belt guard.
4.Fit tool LRT-12-197 into each exhaust 
camshaft in turn.5.Using assistance, rotate each exhaust 
camshaft slightly and align timing marks on LH 
and RH rear camshaft gears.
6.Remove tool LRT-12-197 from exhaust 
camshaft.
7.Fit tools LRT-12-175 to LH and RH rear 
camshaft gears.
8.Rotate both front inlet camshaft gears fully 
clockwise as viewed from front of engine.
9.Using fingers only, fit timing belt to gears, 
starting at the crankshaft gear and working in 
an anti-clockwise direction, keeping the belt run 
as taut as possible and turning the camshaft 
gears only a minimum amount anti-clockwise to 
fit timing belt.
CAUTION: Gears must not be rotated anti-
clockwise more than one tooth.
10.Position an Allen key in tensioner backplate 
and hold tensioner pulley against timing belt. 

ENGINE - K SERIES KV6
OVERHAUL 12-3-77
OVERHAUL
Piston assemblies - engine set
$% 12.17.03.01
Disassembly
1.Remove crankshaft.
 
 +  ENGINE - K SERIES KV6, 
OVERHAUL, Crankshaft.
2.Remove LRT-12-144 cylinder liner clamps from 
cylinder block.
3.Suitably identify each cylinder liner to its fitted 
position in cylinder block.
4.With assistance, position cylinder block to 
enable each piston and cylinder liner to be 
removed.
5.Carefully push each piston assembly and 
cylinder liner from cylinder block.
CAUTION: Suitably identify each piston with 
its respective cylinder liner.6.Remove piston assemblies from liners, keep 
liners in their fitted order.
7.Refit caps onto connecting rods, lightly tighten 
dowel bolts.
8.Using a suitable expander, remove and discard 
piston rings from each piston.
9.Using a squared off end of an old piston ring, 
remove carbon from piston ring grooves.
Inspect
1. Cylinder liner bores: Measure wear and taper 
in two axis 65 mm (2.5 in) from top of cylinder 
liner bore The cylinder liner grade is marked on 
outside diameter of liner.
CAUTION: Cylinder liners with excessively 
glazed, worn, scratched or scored bores 
must be replaced. DO NOT attempt to hone 
or remove glazing from bore. Ensure that if 
original liners are to be refitted, reference 
marks made during dismantling are not 
erased. 

ENGINE - K SERIES KV6
OVERHAUL 12-3-85
9. Big-end bearings selection: Select the 
required bearing shells from general data. 
 
 +  GENERAL DATA, Engine - KV6 
Petrol.
10.Ensure all bolt holes are clean and dry. 
Remove all traces of thread locking material 
from oil pick-up strainer bolt hole and threads of 
retaining bolt.
CAUTION: Do not use a tap.
11.Ensure bearing ladder locating dowels are 
fitted and dowel holes in bearing ladder are 
clean and dry.
12.Check coolant stub pipe in cylinder block for 
signs of leakage and corrosion, replace as 
necessary. Apply sealant, Part No. STC 50554 
to seal replacement pipe to cylinder block.
13.Clean main bearing shell recesses in cylinder 
block.
14.Clean crankshaft main bearing and big end 
bearing journals. Clean bearing shell locations 
in connecting rods and caps.
15.Fit selected main bearing shells, grooved into 
cylinder block and plain into bearing ladder.
16.Fit new thrust washers to cylinder block.
17.Position DTI gauge stylus on end of crankshaft 
as illustrated, push crankshaft away from DTI, 
zero DTI gauge, push crankshaft in the 
opposite direction and note reading on gauge. 
 
 +  GENERAL DATA, Engine - KV6 
Petrol.
CAUTION: If end-float exceeds limits given, 
crankshaft must be replaced.Reassembly
1.Fit selected big-end bearing shells to 
connecting rods and caps.
2.Lubricate crankshaft journals with clean engine 
oil. Hold crankshaft with big end journals 
horizontal, lower crankshaft into main bearings.
3.Carefully pull connecting rods into place, fit 
connecting rod caps noting that featherways 
are on opposite sides; fit and lightly tighten 
dowel bolts. 
4.Tighten dowel bolts to: 
lStage 1 - 20 Nm (15 lbf.ft) 
lStage 2 - Further 45°
5.Using a lint free cloth and a suitable cleaning 
solvent, clean bearing ladder and mating face 
on cylinder block. 
6.Apply clean engine oil to crankshaft thrust 
washers and fit to bearing ladder with oil 
grooves facing outwards.
7.Fit bearing ladder and ensure that all bearing 
shells are seated correctly.
8.Noting that longest bolts must be fitted in inner 
holes in bearing ladder, fit new bolts and tighten 
to:
lStage 1 - 20 Nm (15 lbf.ft)
lStage 2 - Further 90°
9.Using a lint free cloth and a suitable cleaning 
solvent, clean mating surfaces on cylinder 
block and lower crankcase. 

ENGINE - K SERIES KV6
12-3-86 OVERHAUL
10.Apply a continuous bead of sealant, Part No. 
STC 50550, to paths on lower crankcase as 
shown then spread to an even film using a 
roller.
CAUTION: To avoid contamination, 
assembly must be completed immediately 
after application of sealant.
11.Fit 2 M8 slave guide studs into cylinder block at 
positions shown.
12.Position lower crankcase to cylinder block.13.Fit and lightly tighten 6 M8 bolts, remove guide 
studs, fit and lightly tighten 2 remaining M8 
bolts.
14.Using sequence shown, tighten bolts to 25 Nm 
(18 lbf.ft).
15.Fit and tighten remaining M8 bolt to 25 Nm (18 
lbf.ft).
16.Fit 2 rear M6 bolts and tighten to 9 Nm (7 lbf.ft).
17.Clean oil pick-up strainer and mating face.
18.Lubricate new 'O' ring with clean engine oil and 
fit to pick-up strainer.
CAUTION: Ensure 'O' ring, Part No. LYX 
000210L is used.
19.Apply sealant, Part No. STC 50552 to threads 
of oil pick-up strainer retaining bolt.
20.Position oil pick-up strainer, fit and tighten bolt 
to 25 Nm (18 lbf.ft).
21.Clean oil pump, oil seal recess in oil pump body 
and mating face on cylinder block, ensure bolt 
holes are clean and dry.
22.Clean oil seal running surface on crankshaft. 

ENGINE - K SERIES KV6
OVERHAUL 12-3-89
13.Using sequence shown, progressively loosen 
and remove 8 cylinder head bolts.
14.Remove cylinder head.
CAUTION: Support both ends of cylinder 
head on blocks of wood.
15.Remove and discard cylinder head gasket.
CAUTION: Do not rotate crankshaft with RH 
cylinder head fitted.
16.Fit cylinder liner clamps LRT-12-144 and 
secure with cylinder head bolts.
CAUTION: Ensure that feet of clamps do not 
protrude over bores.Refit
1.Clean cylinder head face.
CAUTION: Use suitable gasket removal 
spray and a plastic scraper.
2.Remove bolts securing cylinder liner clamps 
LRT-12-144 to cylinder block and remove 
clamps.
CAUTION: Do not rotate crankshaft.
3.Clean cylinder block face and dowel holes.
4.Clean cylinder head bolts and wipe dry.
5.Lightly lubricate threads and beneath heads of 
cylinder head bolts with clean engine oil.
6.Check that fitted height of dowels is between 10 
to 11 mm (0.40 to 0.43 in) above cylinder block 
top face. Replace dowels if fitted height is 
incorrect.
7.Fit new cylinder head gasket onto cylinder 
block with the word 'TOP' uppermost.
8.With assistance, fit cylinder head and carefully 
position LH inlet to RH inlet manifold.
9.Carefully enter cylinder head bolts, DO NOT 
DROP. Screw bolts into place by hand. 

ENGINE - K SERIES KV6
OVERHAUL 12-3-93
18.Fit cylinder liner clamps LRT-12-144 and 
secure with cylinder head bolts. 
CAUTION: Ensure that feet of clamps do not 
protrude over bores.
Refit
1.Clean cylinder head face.
CAUTION: Use suitable gasket removal 
spray and a plastic scraper.
2.Remove bolts securing cylinder liner clamps 
LRT-12-144 to cylinder block and remove 
clamps.
CAUTION: Do not rotate crankshaft.
3.Clean cylinder block face, dowels and dowel 
holes.
4.Clean cylinder head bolts and wipe dry.
5.Lightly lubricate threads and beneath heads of 
cylinder head bolts with clean engine oil.6.Check that fitted height of dowels is between 10 
to 11 mm (0.40 to 0.43 in) above cylinder block 
top face. Replace dowels if fitted height is 
incorrect.
7.Fit new cylinder head gasket onto cylinder 
block with the word 'TOP' uppermost.
8.With assistance, fit cylinder head and carefully 
position RH inlet to LH inlet manifold.
9.Carefully enter cylinder head bolts, DO NOT 
DROP. Screw bolts into place by hand.
10.Using sequence shown, tighten cylinder head 
bolts progressively to:
lStage 1 - 25 Nm (18 lbf.ft)
lStage 2 - 25 Nm (18 lbf.ft)
lStage 3 - 25 Nm (18 lbf.ft)
lStage 4 - Further 180°
11.Fit RH camshaft cover gasket.
 
 +   ENGINE - K SERIES KV6, REPAIRS, 
Camshaft cover gasket - RH.
12.Remove and discard lower 'O' rings from 
injectors.
13.Clean injectors and injector locations in fuel rail.
14.Lubricate new 'O' rings with castor oil and fit to 
injectors.
15.Position fuel rail assembly and secure injectors 
to inlet manifolds. 

ENGINE - K SERIES KV6
OVERHAUL 12-3-101
4.Fit spring and spring cap.
5.Position LRT-12-034  and adapter LRT-12-
034/1to spring cap and compress valve spring.
6.Fit collets.
7.Release valve spring and remove tool LRT-12-
034.
8.Using a wooden dowel and mallet, lightly tap 
top of each valve two or three times to seat 
valves and collets.
9.Thoroughly clean and lubricate hydraulic 
tappets with clean engine oil. Fit hydraulic 
tappets to original bores in cylinder head.
10.Ensure that mating faces of camshaft carrier 
and cylinder head are clean and dry.
11.Lubricate camshafts and bearing journals with 
clean engine oil.
12.Position camshafts in cylinder head with rear 
timing gear drive slots in each camshaft facing 
towards the centre as shown.
CAUTION: Ensure camshafts are in their 
correct fitted locations. Camshafts are 
colour coded - Inlet - Orange; Exhaust - 
Blue.13.Apply continuous thin beads of sealant, Part 
No. STC 4600, to paths on camshaft carrier as 
shown. Spread sealant to an even film using a 
roller.
CAUTION: To avoid contamination, 
assembly should be completed immediately 
after application of sealant.
14.Position camshaft carrier, fit and progressively 
tighten bolts in the sequence shown to 10 Nm 
(7.5 lbf.ft). 

ENGINE - K SERIES KV6
OVERHAUL 12-3-105
3.Remove oil pressure relief valve plug.
Note: If a hexagonal plug and sealing washer 
are fitted, discard washer.
4.Remove spring and valve.
5.Check that valve and bore are free from scoring 
and corrosion.
Note: Light corrosion may be removed using 
grade 600 emery cloth soaked in engine oil.
6.Check free length of spring.
 
 +  GENERAL DATA, Engine - KV6 
Petrol.
7.Check that valve slides freely in bore.
CAUTION: If valve is scored, renew relief 
valve as an assembly. If valve bore is 
scored, renew oil pump as an assembly.Reassembly
1.Clean cover plate and mating face of cylinder 
block; ensure bolt holes are clean and dry.
2.Clean running surface on crankshaft.
3.Remove all traces of sealant from relief valve 
plug, Torx screws and tapped holes in pump 
body.
CAUTION: Do not use a tap.
4.Lubricate relief valve, spring and bore with 
clean engine oil.
5.Fit relief valve and spring.
6.If a hexagonal plug and sealing washer were 
fitted, fit new sealing washer to plug. 
7.Apply sealant, Part No. STC 50552 to plug 
threads; fit plug and tighten to 25 Nm (18 lbf.ft).
8.Lubricate pump rotors and recess with clean 
engine oil.
9.Fit inner and outer rotors ensuring that 
identification mark on outer rotor is facing 
outwards and that reference marks are aligned.
10.Lubricate new cover plate sealing ring with 
clean engine oil.
11.Fit cover plate seal and cover plate.
12.Apply sealant, Part No. STC 50552 to threads 
of Torx screws, fit and tighten screws.
13.Check that pump rotates freely.
Refit
1.Fit oil pump gasket.
 
 +   ENGINE - K SERIES KV6, REPAIRS, 
Gasket - oil pump.