Robin
850
Workshop
Manual
Supplement
The engine
Figure
4 Oil pump - exploded
1 Oil pump
2 Gasket
3
Extension-
Early
engines
4 Filter
5 Set screw
11
Lockwasher
12 Nut
13 Oil pump driving shaft
14
Gear
15 Shaft
6 Extension - Later engines 16 Pin thrust muff and gear
7
Bolt 17 Thru
st
mu
ff
8 Lockwasher 18 Bush
9 Gasket 19
Shim
10 Stud
Figure
5 Oil pump driveshaft shims
Operation 5 - Crankshaft rear
cover and
oil seal replacement
(with
flywheel
removed)
7
1 Unscrew six set screws and remove oil seal
cover, complete
with
oil seal and gasket from
the cylinder block.
2 Using a suitable tool, press the oil
seal
from the rear cover.
Note:
Do
not
use a screwdriver
as
this
will
damage the oil seal seating.
3 Carefully press a new oil seal into the
rear
cover. To ensure the
seal
is
seated firmly and
squarely use a press
tool. similar
to
that shown
in
Figure
6.
4 Locate the
two
dowels
of
the r
ea
r cover in
the
cylinder block and then secure the cover
with
six set screws and
lockw
ashe
rs
(see
Figure
7)
.
Operation 6
-Timing
chain cover,
oil seal and gasket replacement
(without
engine removal)
1 Drain the cooling system.
2 Remove the radiator, complete
with
ho
ses,
from the vehicle.
3 Slacken alternator mountings and remove
the fan belt.
4 Unscrew four
nut
s and lockwashers and
remove the water pump from cylinder block.
5 Unscrew the retaining bolt and withdraw
the crankshaft pulley.
Figure
6 Replacing rear cover oil seal
,
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