ENGINE
cylinder sleeves may
be
disturbed because
of their adherence to the gasket.
When
refitting the cylinder head nuts,
tighten them gradually in the sequence
shown in
Fig.
28
in
order to produce an
even pressure on the
gasket
and prevent
undue strain in the cylinder block casting.
It
will
be
necessary to recheck the nut
tighmess when cold to 1S105 lbs.
ft.
Before tightening down the rocker shaft
pedestals, screw back each adjusting screw
and ensure that the ball ends of these
screws engage correctly in the push rods.
Failure to attend to this procedure
can
result in dvnage to the push rods. Smother
the rocker gear
with
oil, particularly where
the rockers
bear
on the valves.
Before replacing the rocker cover ensure
that the cork joint is undamaged and
shellaced to the
cover, otherwise oil
may
leak through the joint.
After the first
500
miles the cylinder head
nuts should
be
checked for tighmess with
the engine hot.
17.
LOW
COMPRESSION
KIT-
PART
No.
502227
This kit
was
introduced for those owners
who
experienced
difficulty
in obtaining
fuels of a
high
octane value.
The kit comprises of
:-
8
Push Rods (longer
than
those normally
fitted).
1
Combustion Head Gasket.
1 Low Compression Plate.
1
"
Corgasyl
"
Combustion Head Gasket.
(a)
Pr
are
the engine
unit
as
for de-
car
To
nisation
(see
attempt should
be
ma
?r
e to
25J
break the
combustion head
seal
by
turning
the
crankshaft-this action
will
only dis-
turb the cylinder liners on their
lowennost
seatings
and water leakage
will
result.
When
the head
has
been
removed fit liner retainers (Fig. 22)
and check that the liners stand proud
of the cylinder block
.003"
to
.0055"
(see
Page 19.)
(b)
Apply a light
coating
of
"
Wellseal
"
jomting compound to both sides of the
low compression plate and gaskets.
(C)
Fit the copper cylinder head
gasket
(smooth
face
downwards), followed by
the
low comprrssion plate and steel
"
Corgasyl
"
gasket
;
this may be
fitted either side up.
(d)
Fit the longer push rods and lower
the combustion head into position.
Omitting the plain washers, tighten
the combustion head nuts (Fig. 28) to
the
correct torque (100 to 105 lbs. ft.).
(e)
Screw back the ball pins in the rockers
and then fit shaft assembly to the com-
Fig.
28
Cylinder
Head
nut tightening sequence
bustion head and tighten nuts to 24-
26 lbs.
ft.
Adjust valves for clearance. (See
page 22.)
(f)
Reconnect fuel pipe, carburettor/dis-
tributor suction pipe, throttle and
*A
-
choke cables to carburettors.
(g) Replace rocker cover, ensuring first
that the seal is in good order, also the
thermostat housing, thermo gauge
bulb.
(h)
Refit heater hose
(if
heater is fitted),
by-pass hose, top radiator hose. Re-
plenish cooling system with coolant.
(i)
Reconnect fuel ipe at pump. Con-
nect battery 1eaJ
NOTE-Afier the first
500
miles the
cylinder nuts should
be
checked
for tighmess with the engine hot.
18.
THE
"
PUROLATOR MICRONIC
"
OIL FILTER-TYPE
17F. 5102 (Fig.
29)
The Purolator Micronic filter consists of
a plastic impre ated paper element which
removes
the
Rest fartides of abrasive
which invariably
fin
their way into the
7
e.
A
filter of this
type
will sto
f'
o y the smaller microm swd partic es of
abrasive, but ensures a supply of clean oil
to the engine at
all
times. The only attention
which the filter needs is to see that the
elanent is changed at periods not ex-
&g
8,000
miles. It is essential that this
operation is carried out at specified periods
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