Triumph MAYFLOWER 1951, Instruction Book

Page: 26 / 86

25
GENERAL UPKEEP— Lubrication
hand side for right-hand drive cars
and vice versa.
Withdraw dipstick and wipe clean,
then insert stick and push it fully
home before withdrawing for
reading. The correct level is to the
top mark. The dipstick orifice is
also the gearbox oil filler.
Every 10,000miles or 15,000 km.
The gearbox should be drained and
refilled with new oil (see page 75
or 76).
REARAXLE
The hypoid bevel gears fitted in the rear axle require a special lubricant to ensure efficient
operation and long life since there is a sliding action between the sturdy gear teeth. The
sliding action is too severe for normal axle oils, so special oils have been developed which
contain additives that make the oil capable of withstanding greater pressures, however, the
special additives gradually 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 new "Hypoid" oil every
5 ,000 miles (8 ,000 km.) and in any event do not exceed a period of 10,000 miles
(16,000 km).
It is desirable to have the oil level checked during this period, and if the oil level is more
than ½ " below the threads in the filler orifice do not" top up " but drain the oil and refill
with new oil to the bottom of the threads, this will overcome the danger of mixing the
various grades of oil.