Robin 810
Workshop
Manual
Supplement
Rear
axle
Section
K
1
W
ith
the introduction
of
the Robin
850
a
rear
axle
with
a ratio
of
3·23:1 has been
introduced. The number
of
teeth on the crown
wheel
ha
s been increased
to
42
and the
number
of
teeth
on
the pinion increased
to
13.
The axle is
now
fitted
with
an
oil seal retaining
plate to reduce the po
ssi
bility
of
oil reaching
the brakes. The plate is fitted between the
rear brake backplate and axle end, and is
secured in position by the four set screws and
lockwashers sec
ur
ing the backplate
to
the
axle end
(
Figure
1
).
N
ew
axle hub assemblies and brake drums
have also been introduced. The
hub
has been
modified
by
the addition
of
a brake drum
locating collar fixed
to
one
of
the wheel studs.
Figure
1 Rear axle
1 Axle tube.
RH
2 Axle
tube.
LH
3 Stud. axle
case
4 Lockwasher axle
case
5 Nut. axle
case
6 Bracket. brake pipe
7
Filler plug
8 Split pin. breather hole
9 Axle shaft
10 Collar shaft
11
Bear
ing. axle end
12 Oil
seal
13 Hub assembly
14 St
ud
1 5
Key
. hub securing
16 Washer. hub securing
17 Nut. hub securing
18 Taper bearing
19
Shim. differential
bear
i
ng
20 Crown wheel and pinion
21
Differential
case
22 Bolt. crown wheel
23 Wheel differential
24 Thrust washer
25 Pinion
different
ial
26 Thrust washer
27
Differential pin
28 Locking pin
29
Bearing. pinion head
30 Bearing. pinion tail
To
accommodate this modification the brake
drum has had one
of
the wheel stud locating
holes enlarged. This
will
ensure that whenever
the drum is removed in service it can only be
refitted
on
the same stud
s,
thereby
red
ucing
the possibility
of
brake judder.
Routine maintenance
The axle breather hole should be cleaned out.
and the axle oil level topped-
up
every
6
,00
0 miles (10,000km).
31
Collapsible
spacer
32
Spacer.
pinion
head
33 Coupling
c/w
shield
34 Shield
35 O
il
seal.
pinion
36 Washer.
coupling
37
Nut. coupling
38 Plate. oil
seal
39 Set screw. backplate
40
Lockwesher. backplate
41
Collar. stud locating
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