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final drive unit. The inboard end of each
driveshaft locates in the differential. All helical
gear clusters are in constant mesh, with the
fifth gear assembly located on an intermediate
plate mounted on the rear end of the gearbox.
Gear engagement is made by sliding
synchromesh hubs. Gearchanges are made
via a central floor-mounted gear lever.
Maintenance ¡
2 Maintenance is limited to periodically
checking the oil level, topping up as required,
renewing the oil, and visually inspecting the
transmission for oil leaks. The most likely
source of an oil leak will be from the driveshaft
seals.
Oil level - checking ¡
3 For improved access, jack up the vehicle
and support it on axle stands. Note that the
vehicle must be level in order to carry out this
check.
4 If the transmission is hot due to the car
having been driven recently, allow it to cool
before making the check; oil foams when hot
and can produce a false level reading. Wipe
the area around the filler plug then unscrew
and remove the plug from its location in the
front of the casing. The oil should be level with
the base of the filler plug hole.
5 If necessary, top up with oil of the specified
grade.
6 On completion refit the filler plug, wipe
clean any oil spillage, then lower the car to the
ground.
Oil - renewal ¡
7 The transmission oil should ideally be
drained when hot (directly after the vehicle
has been used). For improved access, jack up
the vehicle and support it on axle stands.
Note that the vehicle must be level to ensure a
correct level reading when topping up.
8 Wipe clean the area around the filler plug on
the front face of the transmission casing, then
unscrew and remove the plug.
9 Position a suitable container underneath
the drain plug (located at the left-hand end of
the transmission). Unscrew the plug and allow
the oil to drain into the container. Oil will start
to drain before the plug is fully withdrawn so
take precautions against scalding. Wait about
ten minutes to allow the oil to drain fully.
10 When the oil has finished draining, clean
around the threads of the drain plug and its
location in the transmission casing, then refit
the plug and tighten it.
11 Refill the transmission with the specified
quantity and grade of oil through the
filler/lever plug hole. With the vehicle level and
the transmission cold check the oil level as
described above, then refit and tighten the
plug. Lower the vehicle to complete.
Gearlever and linkages - general
12 The component parts of the gearchange
and selector assemblies are shown in
Figs. 13.91 and 13.92. They do not normally
Supplement: Revisions and information on later models 13•95
Fig. 13.90 Exploded view of the transmission unit fitted to 1372 cc models (Sec 12)
13
Fig. 13.89 Gearchange control linkage on the 1301 cc Turbo ie model with Antiskid
(Sec 12)