Villiers MARK 12D, Operating Instructions And Spare Parts List

Page: 29 / 53

4-SPEED GEARBOX
for the Mk. 1 1 ,0/4, Mk. 7E/4 and Mk. 8E/4 Units . .
(Fig. 6. Illustration on page 28).
Note :-When ordering spares;, always quote the engine number.
This is stamped on the crankcase lug.
Always
qLwte the part
number and description, not the illustration number, which is only
for your assistance.
GEARBOX RATI OS.
Standard Type
I ndex Mark S
- 1 - 1 , 1.35- 1 , 1 .8- 1
and
2.93- 1 .
Wide Ratio Type
Index Mark
V
- 1 - 1 , 1 .35- 1 , 2.3-1
and
3 .47- 1 .
LUBRICATION.
For the gearbox we recommend Castrol "D"
O i l
(S.A.E.
1 40)
which can be
inserted after the. Gearbox Dipstick ( I llustration No.
26)
has been removed. The
oil capafity of the gearbox is approx
.
.}
pint and a groove cut into the dipstick
indicates the correct.·oil level. A grease nipple is provided on the exposed end of
the clutch levE!'r, an
d
.grease shou,ld be applied periodically.
ADJ USTMENT OF CLUTCH OPERAT I NG RODS.
Remove cover, i l lustration No.
] 4 ;
then detach clutch cable from
operating
lever
No.
64.
This will expose the clutch adjuster, No.
67,
which when screwed
in will reduce the clearance between the adjuster sleeve, No.
66,
and
the
push
rods. Jnscr<1wing the adjuster will increase the clearance. Independent adjust­
ment for the �lutch control cable is provided by the adjuster screw in the
lug
at
top of gearbox.
I MPORTANT.
Apart
from the gearboxes, there are
several
components not common to both
the Mark 8E/3
and
the Mark 8E/4 units. These parts include primary chaincase.
clutch assembly, etc., and for this reason when ordering replacement parta
IT IS VERY I M PORTANT I N DEED that the full number of the engine is quoted.
26