cause skin complaints or irritation.
Avoid excessive contact.
When all the oil has drained, clean
and replace the drain plug.
The filler is reached from inside the
car, through a cover on the right-hand
side of the gearbox housing. This is
found by lifting the floor mat nearest
the gearbox cover and releasing the
lift-a-dots. Lift the material cover up
and the inspection cover is visible. The
inspection hole is near the centre of
the tunnel. The filler plug has a square
head.
Remove the plug and fill to the
bottom of the filler hole. Refit the
plug, but do not over-tighten. Replace
the inspection cover and refit the
material cover.
Rear Axle
The axle used in the Plus 8 is fitted
with a limited slip differential. It is
essential that an oil specially
formulated for this type of axle is used
(see page 5). The oil must be changed
every 5,000 miles (8,000km). A drain
plug is provided at the base of the
axle.
Caution: The hypoid bevel gears and
limited slip differential fitted to the
rear axle require a special lubricant to
ensure efficient operation and long
life. During ‘running in’ the limited slip
discs may be heard to ‘knock’ or ‘click’
when turning corners, particularly
after long motorway trips. This should
become less frequent after the first
5,000 miles (8,000km).
This type of gear incorporates a
sliding action between the
exceptionally sturdy gear teeth,
resulting in silent operation. However,
the rubbing action is too severe for
normal oils, so special ‘Hypoid’ oils
have been developed which contain
additives that make the oil capable of
withstanding pressures many times
heavier than normal oils can cope
with. A further feature of ‘Hypoid’ oils
is that they are ‘lighter’ that is to say,
more fluid than normal axle oils.
However, the special additives begin
to lose their properties in the course
of use, and the oil tends to revert to a
light gear oil.
Thus it is advisable to completely
drain and replenish with a new
‘Hypoid’ oil every 5,000 miles
(8,000km), and in any event do not
exceed a period of 10,000 miles
(16,000km).
It is desirable to have the oil level
checked during this period and if the
oil is below the plug on the rear do
not ‘top up’ but drain the oil and refill
with new oil, this will overcome the
danger of mixing the various grades
of oil. Clean away grit from the filler
plug and refill until oil reaches the
level of the filler plug on the rear of
the axle case.
Air Cleaner
The injection system fitted to this car
detects the level of air drawn into the
engine, and uses this information to
control the fuel level. It is important
that the air flow is not restricted. The
air cleaner should be changed every
10,000 miles, or more frequently in
dusty conditions or regular town use.
The element can be removed by
releasing the four clips around the top
of the case. The element is free to be
removed. When replacing, use the
correct specification of element and
make certain that it is fitted correctly
on the raised areas in the cleaner and
on its lid. Be sure the lid is properly
secured.
While checking the air cleaner the
pipes connecting it to the engine
should be examined. It is most
18
Plus 8 4.0
Routine
Maintenance
Routine Maintenance
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