ENGINE - K SERIES KV6
12-3-56 REPAIRS
7.Remove 4 nuts securing engine oil cooler to
mounting bracket and position oil cooler aside.
8.Remove oil pressure relief valve plug nut.
Note: If a hexagonal head plug and sealing
washer are fitted, discard sealing washer.
9.Remove spring and valve.Refit
1.Clean valve, spring and plug; remove all traces
of sealant from threads in oil pressure relief
valve bore and from threads of plug.
CAUTION: Do not use a tap.
2.Clean valve seating inside oil pump housing.
3.Check that valve slides freely in bore and that
valve and bore are free from scoring and
corrosion.
Note: Light corrosion may be removed using
grade 600 emery cloth soaked in oil.
4.Check free length of spring.
+ GENERAL DATA, Engine - KV6
Petrol.
5.Apply sealant, Part No. STC 50552 to plug
threads.
Note: If a hexagonal head plug and sealing
washer were fitted, fit new sealing washer to
plug.
6.Fit valve, spring and plug to oil pump housing.
Tighten plug to 25 Nm (18 lbf.ft).
7.Fill canister of replacement oil filter with clean
engine oil.
8.Lubricate new oil filter seal with clean engine oil
and fit filter.
9.Position engine oil cooler to mounting bracket,
fit and tighten nuts to 25 Nm (18 lbf.ft).
10.Remove oil container from underneath of
engine.
11.Fit splash shield and secure with bolts.
12.Fit RH road wheel and tighten nuts to 115 Nm
(85 lbf.ft).
13.Fit underbelly panel.
+ EXTERIOR FITTINGS, REPAIRS,
Panel - underbelly.
14.Connect battery earth lead.
15.Check engine oil level, top-up if necessary.
M12 7916
ENGINE - K SERIES KV6
REPAIRS 12-3-57
Oil cooler - engine
$% 12.60.68
Remove
1.Disconnect battery earth lead.
2.Drain cooling system.
+ COOLING SYSTEM - K SERIES KV6,
ADJUSTMENTS, Coolant - drain and refill.
3.Remove RH front road wheel.
4.Remove 3 bolts securing RH splash shield to
body and remove shield.
5.Position container to collect spillage under oil
filter.
6.Loosen and remove oil cooler pipe unions from
oil filter housing, remove and discard 2 'O'
rings.
CAUTION: Failure to retain bosses will
result in damage to oil cooler. Always fit
plugs to open connections to prevent
contamination.
7.Position container to collect coolant spillage.8.Release clips and disconnect coolant hoses
from engine oil cooler.
CAUTION: Always fit plugs to open
connections to prevent contamination.
9.Remove 4 nuts securing engine oil cooler to
mounting bracket and remove oil cooler.
10.Restrain oil cooler pipe bosses on oil cooler
housing, loosen and remove oil cooler pipes
from oil cooler; remove and discard 2 'O' rings.
CAUTION: Always fit plugs to open
connections to prevent contamination.
Refit
1.Clean oil cooler pipe unions and mating faces.
2.Lubricate new 'O' rings with clean engine oil
and fit to oil cooler pipes.
3.Fit pipes to engine oil cooler, restrain bosses on
oil cooler body and tighten unions to 26 Nm (19
lbf.ft).
CAUTION: To prevent damage to
components, use two spanners when
loosening or tightening unions.
4.Position engine oil cooler to mounting bracket,
fit and tighten nuts to 25 Nm (18 lbf.ft).
5.Position oil cooler pipes to oil filter housing and
tighten unions to 26 Nm.
6.Connect coolant hoses to oil cooler and secure
with clips.
7.Fit splash shield and secure with bolts.
8.Fit RH road wheel and tighten nuts to 115 Nm
(85 lbf.ft).
9.Fill cooling system.
+ COOLING SYSTEM - K SERIES KV6,
ADJUSTMENTS, Coolant - drain and refill.
10.Connect battery earth lead.
11.Check engine oil level and top-up if necessary.
M12 6614
M12 7917
ENGINE - K SERIES KV6
REPAIRS 12-3-71
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 mating faces on
camshafts.
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.Place gears inverted on a flat surface, with the
locating lugs on the gears positioned as
illustrated.3.Keeping the timing marks aligned, position
timing belt onto gears.
4.Position LRT-12-195 between the gears, turn
centre nut sufficiently to spread drive belt.
5.Invert gears and timing belt and position LRT-
12-175 to camshaft gears.
6.Check that the locating lugs are still aligned and
remove LRT-12-195 from between camshaft
gears.
7.Fit LRT-12-198 alignment pins into the end of
each camshaft.
8.Position timing belt and gears over LRT-12-198
and locate gears onto camshafts.
ENGINE - K SERIES KV6
REPAIRS 12-3-75
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 mating faces on
camshafts.
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.Place gears inverted on a flat surface, with the
locating lugs on the gears positioned as
illustrated.3.Keeping the timing marks aligned, position
timing belt onto gears.
4.Position LRT-12-195 between the gears, turn
centre nut sufficiently to spread drive belt.
5.Invert gears and timing belt and position LRT-
12-175 to camshaft gears.
6.Check that the locating lugs are correctly
aligned and remove LRT-12-195 from between
camshaft gears.
ENGINE - K SERIES KV6
12-3-78 OVERHAUL
2.Cylinder liners have their bore/grade and step
height determined at manufacture. The bore/
grade, red, blue (A) or (B), and step heights V
or Z together with the cylinder liner part number
and colour code are marked on the external
diameter of the cylinder liners. If cylinder(s) are
to be replaced, the replacement liner(s) must
have the same step height as the original
liner(s). Both step heights are available in red
(A) and blue (B) grades of cylinder liners.
+ GENERAL DATA, Engine - KV6
Petrol.
3.Check pistons for distortion and cracks.
NOTE: Piston grades A or B are stamped on
the crown of the piston.
4. Piston diameter check: Measure piston
diameter at right angles to gudgeon pin and 8
mm (0.3 in) from bottom of skirt.
+ GENERAL DATA, Engine - KV6
Petrol.
NOTE: Piston and connecting rods are only
supplied as an assembly.
CAUTION: Ensure pistons are retained with
their respective cylinder liners.
5.Position piston in cylinder liner and measure
clearance 20 mm (0.75 in) from bottom of
cylinder liner.
+ GENERAL DATA, Engine - KV6
Petrol.6. Piston ring gap: Position new top and second
compression piston rings 20 mm (0.75 in) from
top of cylinder bore and measure ring gaps.
+ GENERAL DATA, Engine - KV6
Petrol.
CAUTION: Ensure piston rings are kept
square to liner bore. Retain rings with the
piston fitted to the liner in which they were
checked.
7. Piston rings - refit:Using a suitable expander,
fit oil control spring.
8.With 'TOP' or identification markings to top of
piston, use an expander to fit piston rings in
sequence; oil control, 2nd and top
compression.
NOTE: The second compression ring is
stepped.
M12 6838
ENGINE - K SERIES KV6
OVERHAUL 12-3-79
9.Ensure rings are free to rotate, position
compression ring gaps A and B at 120° to each
other and away from thrust side. Position oil
control ring gap C and spring gap D at 30° on
opposite side of gudgeon pin axis.
10.Check clearance of each piston ring to its
respective groove.
+ GENERAL DATA, Engine - KV6
Petrol.Reassembly
1.Clean cylinder liners and liner recess in cylinder
block.
2.Lubricate cylinder liner bores, pistons and rings
with clean engine oil, ensure ring gaps are
correctly spaced.
3.Clean bearing shell recesses in connecting
rods and bearing caps.
4.Fit piston ring clamp, LRT-12-204 to each
piston in turn and fit piston to its respective
cylinder liner ensuring that when fitted, arrow
on piston crown will be towards front of engine.
CAUTION: Do not push pistons fully down
bores at this stage.
5.Remove piston ring clamp.
6.Apply a 2.00 mm (0.1 in) thick continuous bead
of sealant, Part No. RTC 3347, around
shoulder of each cylinder liner as shown.
7.Keeping cylinder liner 'square' to cylinder block,
push each liner fully down until shoulder of liner
seats against cylinder block ensuring that the
arrow on the piston is towards front of engine.
8.To prevent cylinder liners from being displaced,
position LRT-12-144 cylinder liner clamps and
secure to cylinder block with cylinder head
bolts. Ensure that feet of clamps do not
protrude over liner bores.
9.Fit crankshaft.
+ ENGINE - K SERIES KV6,
OVERHAUL, Crankshaft.
M12 6839
D
BA
C
M12 6842
ENGINE - K SERIES KV6
12-3-84 OVERHAUL
13.Remove crankshaft, remove main bearing
shells and thrust washers from cylinder block.
Discard thrust washers.
14. Main bearings - selection: record main
bearing code letters from front face of cylinder
block. Reading from left to right, the first letter
relates to No.1, (front) main bearing journal.
15.Record main bearing code numbers, located on
the crankshaft rear web. The first number,
reading left to right, relates to number one main
bearing journal.
Inspect
1.Check crankshaft main journal diameters.
2.Diameters should be within tolerances.
Replace crankshaft if outside tolerance.
+ GENERAL DATA, Engine - KV6
Petrol.
3.Determine appropriate main bearing shells to
be fitted from size selection and type tables in
general data.
+ GENERAL DATA, Engine - KV6
Petrol.4.Determine main bearing thickness by colour
code on edge of bearing.
+ GENERAL DATA, Engine - KV6
Petrol.
5. Crankshaft big-end journal
diameters:Check crankshaft big-end journal
diameters; replace crankshaft if outside
tolerance.
+ GENERAL DATA, Engine - KV6
Petrol.
6.Determine big-end bearing thickness by colour
code on edge of bearing.
+ GENERAL DATA, Engine - KV6
Petrol.
7. Big-end bearings - selection: Record big-end
journal code letters, located on the rear
crankshaft web. The first letter, reading from
left to right, relates to the number one big-end
journal.
8.Record big-end bearing bore numbers, this will
be 7, 8 or 9 located on the connecting rod
bearing cap.
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.