The engine Section F
makes
good
contact
with
the ground face
of
the crankshaft.
15
Replace crankshaft
to
cylinder block,
fit
main bearing caps in correct order, rear, centre,
front and secure
with
six i
UNF
nuts and plain
washers.
Always
fit
new
bearing cap nuts and
tighten
to
a torque
of
3·316kg m (241b ft).
16
Fit a
new
oil seal into the rear cover,
position a
new
gasket and secure rear cover
to
the cylinder
block
ensuring the
dowels
are
firmly seated in their locations.
17
Fit
front
and rear bridge pieces and cork
packing ensuring the end faces are flush
with
the cylinder
block
and secure
with
four
1
5
6
UNC
screws.
18
Replace rear engine plate, fixing
with
four
1
5
6
UNC set screws and lockwashers.
19
Fit flywheel assembly to crankshaft and
secure
with
three~
UNF bolts and tab washers,
tightening
to
a torque
of
1·66-2·07kg
m
(12-151b
ft).
Check flywheel run
out
(see
Operation
2).
20
Replace
front
engine plate and
new
gasket
to
the cylinder block and secure
with
two~
UNC
set screws and lockwashers.
21
Fit crankshaft bi-metal thrust washers
with
oil slots facing forward, and steel thrust
washer
with
its countersunk aperture facing
rearwards.
22
Fit
Woodruff
key sprocket spacer and
crankshaft sprocket.
23
Using the crankshaft pulley or flywheel
turn the crankshaft until the
woodruff
key is
pointing
to
eleven o'clock.
24
Turn camshaft so that the groove
~n
the
end
of
the camshaft is in alignment
with
the
woodruff
key on the crankshaft.
25
Replace camshaft sprocket along
with
timing
chain and secure
with
two
1
5
6
UNC bolts
and locking plate.
26
Using a straight edge, check the camshaft
sprocket is in alignment
with
the crankshaft
sprocket. The valve timing ll)ark·on camshaft
sprocket should
now
be
pointing
to
Woodruff
key on crankshaft.
27
Check timing chain tensioner
for
wear,
renewing
if
necessary, and locate on the lug in
the
timing
chain cover.
28
Fit timing chain cover and
new
gasket
to
front engine plate, using centralising
tool
No. RT7481, and secure
with
seven
~
UNC
bolts,
two~
UNC nuts and lockwashers (see
Figure
10).
17
29
Replace crankshaft pulley and secure
with
~
UNF bolt. plain washer and lockwasher.
30
Locate a
new
gasket and then
fit
the oil
pump
assembly, complete
with
filter, securing
to
the cylinder block
with
two
1
5
6
UN F
nut
and
lockwashers.
31
Fit a
new
gasket and replace sump
tightening the fifteen
~
UNC set screws, spacing
washers and lockwashers evenly.
32
Clean the cylinder head and
block
faces
and fit a
new
gasket. Smear grease around the
metal edges
of
the gasket bore eyelets.
33
Carefully position the cylinder head
squarely on the cylinder
block
and secure
with
three
1
5
6
UNF
and twelve l
UNF
nuts, plain
washers and lockwashers. The three
1
5
6
UN F
nuts must
be
fitted
to
the spark plug side
of
the
cylinder head. Check that all cylinder head nuts
indicated in
Figure
13
are tightened in the
order
shown
to
a torque
of
3·46kg m (251b
ft).
The three remaining nuts should be tightened
to
a torque
of
2·07kg m (151b
ft).
34
Replace the push rods keeping them in
their correct order.
35
Locate rockershaft assembly on the four
studs and secure firmly
with
two~
UNF
nuts
and washers
to
a torque
of
2·35-3·04kg
m
(17-22lb
ft).
Check tappet clearance (see
Operation
16).
36
Fit a
new
gasket and replace rocker cover
securing in position
with
two
1
5
6
UNF
nuts and
washers.
37
Replace ancilliaries.
38
Install the engine and gearbox assembly
(see
Operation
1 ).
Operation
16-
Tappet adjustment
Tappet clearances are 0·152mm
(0·006in)
cold
0·254mm (0·01 Oin) hot.
Remove the rocker cover and adjust in the
following
order,
with
each valve in the
fully
closed position, using general tool No.
6500A
(see
Figure
27).
No. 1 valve
with
No. 8 valve
fully
open.
No. 2 valve
with
No. 7 valve
fully
open.
No. 3 valve
with
No. 6 valve
fully
open.
No. 4 valve
with
No. 5 valve
fully
open.
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