Page 269 of 1007
ENGINE - K SERIES KV6
12-3-92 OVERHAUL
10.Release clip and disconnect coolant bleed
hose from RH inlet manifold, position hose
aside.
11.Release injector harness clips from injector
protection cover - if fitted, or from bosses on
fuel rail.
12.Remove 2 bolts securing protection cover - if
fitted and RH fuel rail to RH inlet manifold,
remove cover.13.Remove 2 bolts securing fuel rail to LH inlet
manifold.
14.Release injectors from manifolds and carefully
lay fuel rail and injectors aside.
CAUTION: Always fit plugs to open
connections to prevent contamination.
15.Using sequence shown, progressively loosen
and remove 8 cylinder head bolts.
16.Remove cylinder head.
CAUTION: Support both ends of cylinder
head on blocks of wood.
17.Remove and discard cylinder head gasket.
CAUTION: Do not rotate crankshaft with LH
cylinder head fitted.
Page 270 of 1007

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.
Page 276 of 1007

ENGINE - K SERIES KV6
OVERHAUL 12-3-99
20.Insert each valve into its respective guide.
21.Extend valve head 15 mm (0.6 in) out of guide
and position DTI gauge to rear of valve head.
22.Move valve towards front of cylinder head and
zero gauge ensuring that stylus of gauge
remains in contact with valve head.
23.Move valve towards rear of cylinder head,
record gauge reading obtained to give valve
stem to guide clearance 'B'.
+ GENERAL DATA, Engine - KV6
Petrol.
24.Remove valves ensuring they are retained in
their fitted order.
25.Renew valves and/or guides as necessary.
26.To replace valve guides support cylinder head
face down on wooden blocks.
27.Position LRT-12-519-3 in tappet bore and drift
out valve guide using LRT-12-519-1.
CAUTION: Retain guides in their fitted
order.28.Identify type of valve guide fitted: 'A' - Standard
production 'B' - Service replacement.
CAUTION: Standard production valve
guides A must be replaced with service
replacement guides B.
29.Locate valve guide in valve guide bore with
identification groove towards valve seat and
position depth gauge LRT-12-519-2 onto valve
guide.
CAUTION: Cylinder head and valve guides
must be at room temperature when fitting
guides.
30.Position nylon guide LRT-12-519-3 in cylinder
head, press guide into bore using driver LRT-
12-519-1 until depth gauge contacts cylinder
head.
M12 6890
LRT-12-519-1
LRT-12-519-3
M12 6892
LRT-12-519-2
LRT-12-519-1
LRT-12-519-3
Page 282 of 1007

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.
Page 283 of 1007
ENGINE - K SERIES KV6
12-3-106 OVERHAUL
Sump - engine oil
$% 12.60.38.01
Remove
1.Drain engine oil.
+ MAINTENANCE, MAINTENANCE,
Engine Oil and Filter – KV6.
2. If fitted:Remove 4 nuts securing engine oil
cooler to mounting bracket and position oil
cooler aside.
3.Remove bolt securing dipstick tube to cylinder
block.
4.Depress and hold down dipstick tube collar;
remove dipstick tube from sump.5.Using sequence shown and noting their fitted
positions, remove 10 bolts securing sump to
lower crankcase.
6.Using a mallet, gently tap sump sideways to
break sealant bond, remove sump.
CAUTION: Do not lever between crankcase
and sump.
M12 7916
M12 6672
Page 284 of 1007

ENGINE - K SERIES KV6
OVERHAUL 12-3-107
Refit
1.Using a suitable cleaning solvent, clean sump
and mating face on lower crankcase. DO NOT
use a metal scraper on sealing surfaces.
2.Apply a 2 mm (0.1 in) bead of sealant, Part No.
STC 4600 along centre of sump flange, then
spread to an even film using a roller.
CAUTION: To avoid contamination,
assembly should be completed immediately
after application of sealant.
3.Position sump, fit bolts and tighten
progressively in the sequence shown to 35 Nm
(26 lbf.ft).
4. If fitted:Position engine oil cooler to sump
mounting bracket, fit and tighten nuts to 25 Nm
(18 lbf.ft).
5.Position dipstick tube to sump and cylinder
block, fit bolt and tighten to 9 Nm (7 lbf.ft).
6.Fill engine with oil.
+ CAPACITIES, FLUIDS,
LUBRICANTS AND SEALANTS,
Lubrication.
Camshaft timing belt
$% 12.65.18.01
Remove
1.Remove 4 bolts securing engine mounting
bracket to engine front plate and remove
bracket.
2.Release and remove ancillary drive belt from
remaining pulleys.
3.Remove 2 bolts securing ancillary drive belt
tensioner and remove tensioner.
M12 6675
10
9
135
8
4
7
26
M86 5264
Page 286 of 1007
ENGINE - K SERIES KV6
OVERHAUL 12-3-109
13.Using a socket on crankshaft pulley bolt, rotate
crankshaft in a clockwise direction and align the
engine "SAFE" position - notch on crankshaft
pulley aligned to the "ARROW" on front
mounting plate. Check that the timing marks on
the rear camshaft gears are aligned as
illustrated.
CAUTION: Do not use the camshaft gear
bolts or timing belts to rotate the
crankshaft. Do not use the arrow on the oil
pump body as a timing reference.
14.Insert timing pin LRT-12-232 through hole
immediately adjacent to side of lower
crankcase ensuring that pin is located in hole in
drive plate.15.Remove 3 bolts securing camshaft timing belt
LH front cover and remove cover.
16.Remove 3 bolts securing camshaft timing belt
RH front cover and remove cover.
17.Remove bolt securing dipstick tube to cylinder
block.
18.Depress locking collar, release and remove
dipstick tube from engine sump.
LRT-12-232
M12 7927
M12 6672
Page 287 of 1007
ENGINE - K SERIES KV6
12-3-110 OVERHAUL
19.Assemble LRT-12-161 to LRT-12-199 and
secure with clamp bolt.
20.Insert LRT-12-161 with LRT-12-199 into
crankshaft pulley, loosen and remove pulley
bolt.
CAUTION: Ensure crankshaft does not
rotate during above operation.
21.Remove LRT-12-161 and LRT-12-199 from
crankshaft pulley.
22.Remove crankshaft pulley.
23.Remove 3 bolts securing camshaft timing belt
lower cover to cylinder block and remove cover.24.Remove 3 bolts securing engine front mounting
plate and lifting bracket to cylinder block.
25.Remove bolt securing lifting bracket to RH
cylinder head and remove lifting bracket.
26.Remove rubber blanking plug from around
camshaft timing belt tensioner.