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REAR SHOCK
ABSORBERS WOODHEAD-MONROE HYDRAULIC DAMPER (1" BORE).
The Woodhead-Monroe Hydraulic
Damper, as fitted to the rear suspension, is a double-acting direct control
unit which ensures a smooth damping of the spring oscillations on both
bump and rebound. The setting of the damper is the result of exacting
trials and no adjustment is provided or required.
By means of a special seal
in the damper the hydraulic fluid is kept in circulation in such a manner
that leakage is not possible and therefore no topping-up is required at
any time.
These dampers will not vary
in control characteristics, but will give a long life of constant control.
If the comfort of the ride should deteriorate, attention should be given
to tyre pressures and an examination made of the rear springs to ensure
that the grease sleeves are well packed and that the springs are able
to flex freely.
Should the dampers require
attention at any time as a result of accidental damage, they cannot be
repaired by garages or service stations and should therefore be returned
to your Rover Dealer together with an order for replacement units.
PETROL PUMP
S.U. ELECTRIC TYPE "L"
The S.U. electric petrol pump
is of the diaphragm type and will give prolonged service with the minimum
of attention.
Normally the only maintenance which should be required is a periodic cleaning
of the filter, which action should be carried out at every 6,000 miles
(10.000 Km.). The filter is inserted into the bottom of the pump body
and can easily be withdrawn by unscrewing its hexagon attachment screw.
Clean thoroughly in petrol with a stiff brush, never use rag.
Should petrol pump trouble
be suspected, first disconnect the union at the pump end of the pipe from
the pump to the carburettor, then switch on the ignition. If the pump
functions, the fuel shortage is due either to blockage of the petrol pipe
to the carburettor, or more possibly to the carburettor float needle sticking
up. If the pump will not function, first remove the filter, and check
that it is clear. Then disconnect the petrol pipe leading to the tank
at the pump end and blow down the pipe with a tyre pump to ensure the
pipe being absolutely clear. Reconnect the petrol pipe.
If the pump still does not
function, disconnect the lead from the terminal on the bakelite cover
and strike against the body of the pump to see if it sparks and therefore
if any current is available in the wire. If the current is there remove
the bakeite cover and touch the terminal with the lead. If the pump does
not operate when the points are in contact and a spark cannot be struck
off the terminal, it is probable there is some dirt on the points. These
may be cleaned by inserting, a piece of card between them, pinching them
together and sliding the card backwards and forwards.
Should the pump not work satisfactorily
after these operations, the trouble is in the pump itself and the cause
will be too much tension on the diaphragm. To release this tension, remove
the body from the base of the pump by undoing the small screws which hold
these two parts together. The diaphragm itself will then be found to be
adhered to the body of the pump, from which it will have to be separated.
A knife will help in this operation; care being taken to prevent the rollers
which support the diaphragm from falling out. The body should then be
replaced on the base and the screws put in loosely, but before finally
tightening up, it is advisable to stretch the diaphragm to its highest
possible position. This is effected by switching on the~ pump and holding'
the contact points together whilst tightening the screws, well up.
If the pump becomes noisy in
operation, look for an air leak on the suction side. The simplest way
to check for this is to disconnect the petrol pipe from the carburettor
and allow the pump-to-pump petrol into a can. If the end of the pipe is
then submerged in the petrol and bubbles come through, it indicates an
air leak which must be found and cured.
If the pump keeps on beating without delivering any petrol it is possible
that a piece of dirt is lodged under one of the valves. To remove such
an obstruction, unscrew the top union and lift out the valve cage. When
replacing it see that the thin hard red fibre, washer is below the valve
cage and the thick orange-coloured one above. A choked filter or an obstruction
on the suction side will make the pump get very hot and eventually cause
a failure.
The operations outlined above should effectively remedy any trouble likely
to occur; if difficulty is still experienced, consult your local agent.
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