Page 277 of 1007
ENGINE - K SERIES KV6
12-3-100 OVERHAUL
31.Check that fitted height of valve guide, 'A', is
6.00 mm (0.24 in).
32.Check condition of valve seats and existing
valves that are to be re-used.
33.Renew valve seat inserts as necessary.
CAUTION: Do not damage counterbore
when removing insert.
34.Cool replacement valve seat inserts using
liquid nitrogen and press into cylinder head in
one continuous operation.
CAUTION: Do not heat cylinder head.
Inserts must not stand proud of combustion
face on completion of cutting operation.
35.Cut valve seats using a suitable pilot and the
following cutters:
l15° - To cut first angle
l45° - Make final cut and remove any burrs
l60° - To narrow seat and obtain correct
valve seat width
36.Check valve seat width and face angle:
lSeat width - 'A' - Inlet = 1.2 mm (0.05 in);
Exhaust = 1.6 mm (0.06 in)
lValve face angle - 'B' - Inlet and exhaust =
45°
37.Lap each valve to its seat using grinding paste.38.Apply Prussian Blue to valve seat, insert valve
and press it into position several times without
rotating. Remove and check valve for even and
central seating: seating position shown by
Prussian Blue should be in the centre of valve
face: a: High towards stem, increase 60° cut
and restore seat width. b: Low towards edge,
increase 45° cut and restore seat width. Lap
and recheck valve seating.
39.Check valve stem fitted height - 'A'.
+ GENERAL DATA, Engine - KV6
Petrol.
CAUTION: If valve stem fitted height is
above service limit, fit new valve and re-
check. If still over limit, renew valve seat
insert.
40.Clean valve springs and lubricate valves.
Reassembly
1.Lubricate new valve stem oil seals with clean
engine oil.
2.Using tool LRT-12-071 fit new valve stem oil
seals.
3.Fit valves.
M12 7894
A
Page 279 of 1007
ENGINE - K SERIES KV6
12-3-102 OVERHAUL
15.Noting that the front camshaft oil seals are
black in colour and the rear oil seals are red, fit
new camshaft oil seals using LRT-12-203 and
LRT 12-148A
CAUTION: Oil seals must be fitted dry. Do
not use tool LRT-12-148 for fitting seals.
16.Clean camshaft timing belt cover backplate
bolts and apply sealant, Part No. STC 50552 to
the first 3 threads.
17.Position camshaft timing belt rear cover
backplates to cylinder head, fit and tighten bolts
to 9 Nm (7.5 lbf.ft).
18.Fit spark plugs.
19.Clean rear camshaft gears and mating faces on
camshafts.
CAUTION: If sintered gears have been
subjected to prolonged oil contamination,
they must be soaked in solvent 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 timing belts.20.Place gears inverted on a flat surface, with the
locating lugs on the gears positioned as
illustrated.
21.Keeping the timing marks aligned, position
timing belt onto gears.
22.Position LRT-12-195 between the gears, turn
centre nut sufficiently to spread drive belt.
23.Invert gears and timing belt and position LRT-
12-175 to camshaft gears.
24.Check that locating lugs are still aligned and
remove LRT-12-195 from between camshaft
gears.
Page 281 of 1007
ENGINE - K SERIES KV6
12-3-104 OVERHAUL
Oil pump - Overhaul
$% 12.60.32
Remove
1.Remove oil pump gasket.
+ ENGINE - K SERIES KV6, REPAIRS,
Gasket - oil pump.
Disassembly
1.Remove 4 Torx screws securing cover plate to
oil pump body.
CAUTION: Do not allow cover to separate
from pump body.
2.Invert oil pump.
3.Carefully remove cover plate from oil pump
body taking care to ensure that rotors are
retained in pump body.
Note: Cover plate is dowel located.4.Remove and discard cover plate sealing ring.
5.Make suitable alignment marks between inner
and outer rotors and pump body.
6.Remove inner and outer rotors.
7.Clean inner and outer rotors and rotor housing.
8.Fit inner and outer rotors ensuring that
reference marks are aligned.
Inspect
1.Check rotor clearances:
lOuter rotor to body = 0.13 - 0.23 mm
(0.0051 - 0.0091 in)
lInner rotor tip = 0.05 - 0.13 mm (0.002 -
0.005 in)
lInner and outer rotor end-float = 0.04 - 0.09
mm (0.0016 - 0.0035 in)
2.Renew oil pump as an assembly if clearances
are excessive.
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 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 307 of 1007
ENGINE MANAGEMENT SYSTEM - SIEMENS
18-3-2 REPAIRS
Spark plugs - from 03MY
$% 18.20.02
Remove
1.Disconnect battery earth lead.
2.Remove the engine acoustic cover.
+ ENGINE - K SERIES KV6, REPAIRS,
Cover - engine acoustic.
3.Release locking clips and disconnect
multiplugs from plug top coils.
4.Remove 6 bolts securing plug top coils to
cylinder heads.
5.Pull to release and remove 6 plug top coils from
cylinder heads.
6.Using a 16 mm plug socket, remove spark
plugs from cylinder heads.Refit
1.Check and if necessary set spark plug gap.
+ GENERAL DATA, Engine - KV6
Petrol.
2.Fit spark plugs and tighten to 25 Nm (18 lbf.ft).
3.Apply a rubber lubricant to plug top coil lower
seals and fit coils fully into cylinder heads.
4.Fit bolts securing plug top coils and tighten to
10 Nm (7 lbf.ft).
5.Connect and secure multiplugs to plug top
coils.
6.Fit the engine acoustic cover.
+ ENGINE - K SERIES KV6, REPAIRS,
Cover - engine acoustic.
7.Connect battery earth lead.
Page 324 of 1007
FUEL DELIVERY SYSTEM - PETROL
ADJUSTMENTS 19-2-3
Fuel system - depressurise - KV6 - NAS
$% 19.50.02
Check
1.Remove acoustic cover.
+ ENGINE - K SERIES KV6, REPAIRS,
Cover - engine acoustic.
2. Up to 03MY: Remove nut and bolt securing coil
and position coil aside.
3.Remove schraeder valve cap.
4.Position absorbent cloth around fuel feed pipe
connection to collect spillage.
WARNING: The spilling of fuel is
unavoidable during this operation. Ensure
that all necessary precautions are taken to
prevent fire and explosion.5.Connect adapter LRT-19-006 to schraeder
valve.
6.Position opposite end of adapter LRT-19-006
into container, turn tap to release pressure.
7.Remove adapter LRT-19-006 from schraeder
valve.
8.Fit cap to schraeder valve.
9. Up to 03MY: Fit and tighten nut and bolt
securing coil.
10.Fit acoustic cover.
+ ENGINE - K SERIES KV6, REPAIRS,
Cover - engine acoustic.
Page 326 of 1007
FUEL DELIVERY SYSTEM - PETROL
ADJUSTMENTS 19-2-5
Fuel system - pressure test - KV6 - NAS
$% 19.50.13
Remove
1.Remove acoustic cover.
+ ENGINE - K SERIES KV6, REPAIRS,
Cover - engine acoustic.
2.Position absorbent cloth beneath fuel rail.
WARNING: Fuel vapour is highly flammable
and in confined spaces is also explosive
and toxic. Always have a fire extinguisher
containing foam, CO
2, gas or powder close
at hand when handling or draining fuel.
3. Up to 03MY: Remove nut and bolt securing coil
and position coil aside.
4.Connect adaptor LRT-19-006, to pressure
gauge LRT-19-004 .
5.Remove schraeder valve cap.
6.Connect pressure gauge to fuel rail schraeder
valve.
7.Start engine. Pressure at idle = 3.4 bar. If
pressure is below 3.4 bar, suspect the following
in order: fuel hoses, filter, regulator and pump.
Refit
1.Stop engine.
2.Disconnect pressure gauge LRT-19-006 and
adapter LRT-19-004 from fuel rail.
3. Up to 03MY: Fit and tighten nut and bolt
securing coil.
4.Fit acoustic cover.
+ ENGINE - K SERIES KV6, REPAIRS,
Cover - engine acoustic.
Fuel system - pressure test - K1.8
$% 19.50.13
Check
1.Disconnect battery earth lead.
2.Position absorbent cloth beneath fuel pipe to
catch spillage.
WARNING: The spilling of fuel is
unavoidable during this operation. Ensure
that all necessary precautions are taken to
prevent fire and explosion.
3.Disconnect fuel pipe from inlet manifold.
4.Connect LRT-19-004A to manifold and fuel
pipe.
Note:: LRT-19-004X can be used as an
alternative.
5.Connect battery earth lead.
6.Start engine. Pressure at idle = 3.6 bar ± 0.2
bar.
7.Stop engine. If pressure is out of tolerance
suspect the following in order: fuel hoses, filter
and pump.
8.Remove plug, reconnect vacuum hose and
secure hose with clip.
9.Disconnect battery earth lead.
10.Disconnect LRT-19-004A from fuel pipe and
inlet manifold.
11.Connect fuel pipe to manifold.
12.Connect battery earth lead.
LRT - 19 -004A
M19 3675
