Perkins L4 Workshop Manual - L-36 Fleet

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The Diesel Engine closely resem bles lts petrol
counterpart inasmuch as the mechanism is essentially
the same. lts cylinders are arranged above
its closed crankcase. its crankshaft is ODe of the
same general type as that of a petrol engine; it
bas the same sort of valves. camshaft. pistons.
connecting roos and lubrication system.
. It follows, therefore. that to a great extent, it
requires the same treatment as that which any
intelligent and careful operator would accord to a
petrol engine and that gross negligence such as
running the engine short of oil, with sludged Dil,
or with the water boiling will have the same
expensive consequences.
Where the Diesel Engine does differ from the
petrol motor, however, is in th~ method of handling
and firing its fuel. Carburetter and ignition
systems are doDe away with and in their place is
a single component-the Fuel Pump-which perfarms
the functions of both. This confers upon
the Diesel a quite exceptional reliability, since the
chances of breakdown are halved. In tact it may
be axiomat'ically stated that a Diesel Engine never
bas an involuntary stop (other than ODe caused
through mechanical damage due to abuse), unIess
there is a shortage of fuel.
The fuel pump. though very simple in principle.
must necessarily be a piece of precision engineering.
Many years of experience and many hundreds
of thousands of miles of running ensure that the
fuel pump fitted to Perkins engines will, given
ordinarily decent treatment, continue to function
faultlessly. It must however be regarded in the
same light as a magneto, inasmuch as it should not
be interfered with and that its repair, should it
Deed attention, is definitely beyond the skill of any
but specially trained workmen. Like the magneto
it is built as a unit. So that in the rare event of
failure it cao be replaced en bloc.
Unremitting care and attention at the Perkins
factory have resulted in an engine capable of
hundreds of hours of profitable service. WHA T
THE MANUFACTURER CANNOT HOW-
EVER CONTROL IS THE TREATMENT
FOREWORD
Page V
THA T HlS PRODUCT WILL RECEIVE IN
SER VICE. That part rests with you.
This manual is designed to be a guide to the
Distributors of. and Dealers in equipment fitted
with the Perkins L4 Diesel engine and to others
who are concerned with the sale and subsequent
maintenance of such engines.
Perkins Engines Ltd.. are at one with all these
Distributors and Dealers in the desire to ensure
that the Perkins Diesel engines in the hands of
users shall give complete satisfaction.
An essential factor in the attainment of that
object is efficient servicing. The Company provides
a number of facilities with that end in view;
one of them is th is manual. In presenting it to
responsible Distributors and Dealers the Company
are in effect inviting their co-operation and
at the time providing an effective aid to that
co-operation.
Immediately this manual is received, hand it
over to the foreman who will be responsible for
carrying out the maintenance operations which
are described therein. Do not, please, file it in the
office.
The issue of this man ua I bas been descrihed
above as being ODe of the many aids which PerkiDs
Engines Ltd. provide in order to ensure
efficient service for the engines they market. Two
of the others may appropriately he mentioned
here.
Service lnstruction is provided at Peterborough
where the mechanics employed by Distributors.
Dealers and users are given instruction OD the
special characteristics of the engine.
Then there is the Perkins Perpetuity Plan which
is, in fact, an engine exchange scheme of peculiar
description ha ving numerous special advantages.
A booklet describing this can be obtained on
request.
In conclusion we recommend Dealers, Distributors
and users to communicate with the Service
Division of Perkins Engines Ltd.. Peterborough in
case of Deed.