F
SEcrION
F
TDEGEAIlDOX
General Description.
Section No. F.l To
remove
the
gearbox with
the
engine In
the
chassis.
Section No.
F.2
To dismantle
the
gearbox.
Section No.
F.3
To dismantle
the
mainshaft.
Section No.
FA
Dismantling
the
synchromesh mechanism.
Section No.
F.S
Reassembly of
the
synchromesh mechanism.
Section No. F.6 Modified synchromesh hub.
Section No.
F.7
Speedometer
drive modification.
TO
DISMANTLE THE GEARBOX
It will be found advantageous
to
sup
port
the
gear-
box
in a vice by means of a piece of steel bar approxi-
mately
Ii
In. (40 mm.) square by 5 in. (127 mm.)
long. this being SUitably machined and
threaded
at
Fig. F.I.
The
gearbox
ready for removal.
one
end
to
enable it to be screwed into
the
gearbox
drain plug hole (see Fig. F.2).
Remove
the
dipstick and drain piug from
the
gearbox
and drain off
the
oil.
Release
the
clutch housing from
the
gearbox by
removing
the
fixing bolts and spring washers.
TO
REMOVE
THE GEARBOX
WITH
THE ENGINE IN THE
CHASSIS
Remove
the
floor mats and
take
up
the
floorboards.
Remove
the
gearbox cowl.
Disconnect
the
propeller
shaft at its forward end,
marking
the
flanges so
that
they
can be replaced in
the
same relative position on reassembly.
Jack up
the
engine unit
under
the
rear of
the
sump,
using a large piece of wood between
the
jack and
the
sump
to
spread
the
load, and disconnect
the
speedo-
meter
drive at
the
gearbox end.
Disconnect
the
clutch operating lever from its
connecting rod.
Release
the
rear
engine unit mounting by removing
the
two
nuts and bolts of
the
ru
bber
mountlng.
Undo all
the
retaining screws holding
the
bell
housing
to
the
crankcase and lift
out
the
gearbox,
taking care not to place any load on
the
drive gear
shaft and
dutch
centre.
GENERAL DESCRIPTION
Seetion
F.2
The
gearbox has
four
forward gears and
one
reverse
gear.
Synchromesh Is Incorporated on second,
third
and
fourth gears.
Top
gear is obtained by
direct
drive,
third
and
second through gears in constant mesh. and first and
reverse by slJding gears. Reference
to
the
facing
page will
show
the
method
of
engagement.
Seetion
F.I
M.G. Midget (Series
"TD
").
Issue 2 (E)
7'JH~
115]
F.t
Wishvilles Classic
Automobile Library
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