SECTION R
Engines for Refrigeration Units
4.108 engines supplied for the driving of refrigeration
units are
similar
to those engines described
in
this
4.108 workshop manual and
in
the main, can
be
ser-
viced in accordance with the instructions given in this
publication. The following differences should however,
be
noted:-
Cold Starting Procedure (Refer Figs. R.1, R.2)
Glow plugs are fitted in the cylinder head to assist
starting under cold conditions (see Page C.2).
On early engines
the
glowplugs
are
screwed
into
adaptors
which
are
fitted
to
the
cylinder
head. Later
engines
have
the
glowplugs
screwed
directly
into
the
cylinder
head. For
further
information
refer
to
page
09.
Cylinder Liners
The cylinder liners fitted to 4.108 refrigeration unit
engines can be rebored
0.020 in
(0,51
mm) oversize
to the standard bore dimensions given on Page 8.3.
Lubricating System
Due
to the fact that the lubricating oil sump
capacity
has been increased to 28 pints and a much
larger
full
flow lubricating oil filter is used, also the
addition
of a
by-pass lubricating oil filter, the lubricating
oil
and
filter element change period is extended
to
1,000 hours.
Fuel System
A mechanically
governed
fuel
injection
pump
is
fitted.
The fuel
pump
rotor
timing
letter
is
"C",
No.1
outlet
is
Wand
static
timing
is 21
0
B.T.D.C.
or
0.150
in
(3,81mm)
displacement
B.T.D.C.
Two
timing
holes are
provided
in
the
rear
of
the
crankshaft
pulley,
which
when
engaged
with
the
timing
pin,
denote
T.D.C.
and 21
0
B.T.D.C.
(static
timing
point).
When
this
method
of
timing
the
fuel
injection
pump
is
used, ensure
that
the
fuel
pump
circiip
is
correctly
set. For
how
to
set
the
circiip,
refer
to
the
first
part
of
"Alternative
method
where
no
tool
is
available,"
page
N.7.
COMBUSTION
CHAM
GLOW PLUG ADAPTOR
---;
R1
.+
(
,
__
.
,---I
----J{
._.J
4.108
Series
Workshop
Manual,
June
1986
GLOW PLUG
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