The engine Section F
3 Clean the sump and its seating on the
cylinder block face.
4 To
eliminate possible oil leakage the
two
cent
re
front and rear fixing screw threads should
Figure
4 Oil Pump
1 Oil pump
2 Gasket,
oil pump
3 Filter, sump oil
4 Extension, oil pump
5 Socket set screw
6 Bolt. extension
to
pump
7 Lockwasher,
ex
tension to pump
8
Gaske
t.
ex
tension to bl
oc
k
9 Stud. extension
1 0 Lockwasher, extension to block
11
Nut. extension to block
12 Oil pump driving shaft
13
Gear
14
Sha
ft
1 5 Pin thrust mu
ff
and gear
16
Thrust muff
17 Bush
shaft
18 Shim. bush to block
P.1020
be thoroughly cleaned
with
petrol and coated
with
Hylomar sealant before refitting.
5 Fit
new
gasket, replace sump and tighten
the fifteen set screws, spacers and
lo
ckwashers
evenly.
5
Operation 4 - Oil pump removal and
replacement
(with
sump removed)
1 Rotate engine until on TDC (see page 3
Section T).
2 Remove distributor.
3 Unscrew
two
-h UNF nuts, complete
with
lo
ckwashers and remove oil pump assembly,
including filter,
from the cylinder block (
see
Figure
4).
4 Drift
out
the pin securing thrust
muff
to
distributor/ oil pump drive shaft
whi
ch can then
be
withdrawn
upwards through the distributor
housing.
5
Inspect oil pump and drive shaft assemblies
and renew
if
necessary .
•
Note:
In production it has sometimes been
necessary
to
fit
one
or
two
0·127mm (0·005in)
shims between the oil pump
dr
i
ve
shaft bush
and the
cylinder block (see
Figure
5
).
It
is
not
necessary, when dismantling the oil
pump,
to
remove the
dr
i
ve
bush
or
shim,
if
fitted.
Howe
v
er
,
if
the bush and shim
are
removed,
it
is important that they are both
replaced when reassembling the pump.
Figure
5 Oil pump drive shaft shim
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