Oil is passed· through the filter from
pressure controlled
the engine oil press.ure release valve.
Shou1d
ncglectt a balance valve is provided to ensure that oil
will
in
the lubrication circuit passes through the
the
filter· become completely choked due
still reach the bearings.
OIL
of
the full-flow type,
at
50
lb./sq. in.
FILTER
(3·5
thus
the
pump
kg./em.1)
ensuring
at
by
to
The filter element is removed by unscrewing
the
case from its base. A small
ag~
will occur when
this
waste container should be held
the
element is unscrewed.
amount
is done
of spill-
and
a small
underneath
as
a
LUBRICATION SYSTEM
The
/
i
\
~.
(
oil supply is carried in the sump
through a filler aperture in the valve rocker cover.
An
eccentric-rotor type oil pump, mounted exter-
nally
on
the left-hand side
driven by means
pressure
pressure relief valve fitted in the right-hand side
crankcase.
In
in
in
to
through a drilling. This same drilling connects with the
pressure relief
After
gallery on the right-hand side
to
big-end bearings are lubricated from· the main bearings
through the crankshaft, and a hole in each big-end feeds
oil
from the main bearings. A passage from the camshaft
centre bearing feeds oil to the camshaft skew gear and a
drilling from the camshaft front bearing supplies oil
the
rocker shaft via the· front rocker support bracket. The
oil
tunnels to the sump.
shaft chain tensioner
bearing.
injection pump chain tensioner.
(see
operation, the oil is drawn through a gauze strainer
the
sump and reaches the oil pump via drilled ·passages
the
sump and crankcase. The
the
full-flow filter
passing through the filter the oil enters the main
the
crankshaft main bearings by branch drillings. The
to
the thrust side
is fed to the camshaft bearings through passages
Oil
cylinder head where further drillings lead to the
from
At
the front
An oil pipe from the chain wheel hub feeds the
of
askew
'GENERAL DATA') is controlled by the
v_alve.
the rocker gear drains down the push-rod
of
the main gallery, oil is fed to the cam-
gear
on
the opposite side
of
the cylinder bores. '
and
the injection pump chain wheel
and
is
of
the· crankcase,
on
the· camshaft. The oil
oil
passes from the pump
of
the crankcase
of
the crankcase and
replenished
is
shaft-
of
the
is
fed
to
A..9
A
DIESEL ENGINE
Inspection
(4)
Check the relief valve spring against the specification given
(5) Check the valve seating by appJying engineer;s blue
to the conical valve face and testing for continuous
marking.
using tool 18G 69.
Refitting
(6) Reverse the procedure in (I) to (3), ensuring
the cap nut washer is in a serviceable condition.
Section A.6
in
'GENERAL DATA'.
If
necessary, lap the valve onto the seat,
that
Fig.
A.2
Removing
the
oi/pressure relie/vaive
with
tool 18G
Section A.4·
OIL PUMP
Removing
(1) Remove the four bolts securing the oil pump
left-hand side
pump from the engine.
Dismantling
(2) Remove the two cover-plate screws and lift
cover-plate and
Inspection
(3) Check the
given in 'GENERAL DATA'.
(4) Check the
in 'GENERAL DATA'.
Reassembling
(5) Reverse the dismantling procedure.
of
the crankcase and detach tbe oil
'0'
ring.
rotor
lobe clearance against the figure
rotor
end-float against the figure given
69
to
off
the
the
TRACTOMETER AND
OIL
PUMP
DRIVE
SHAFT
Removing
(l)
Unscrew the centre-bolt and remove the oil filter
bowl and element.
(2) Disconnect the tractometer cable from the angle
drive.
(3) Remove the tractometer drive housing and with-
draw the oil seal from the (later"type) housing.
(4) Withdraw the drive shaft, allowing
disengage from the camshaft. Slight rotation
crankshaft may be necessary
shaft gear to' clear the crankshaft web.
it
to rotate
to
allow the drive
Inspection
(5) Ensure that the drive shaft
that
the oil
drive are not worn
Refitting
(6)
Grease the drive shaft seal and reverse the procedure in (1)
drive sufficiently
of
the drive shaft as it engages the camshaft.
pump
or
to
(4), starting with the oil
out
is
perfectly straight
drive and tractometer square
damaged.
of
line to allow for rotation
to
of
the
and
pump
(
\
Refitting
(6) Reverse the removing procedure, with the driving
slot
in
the pump shaft positioned
tongue
Section
A.S
on
the drive.
OIL PRESSURE RELIEF VALVE
Removing
(1) Unscrew the centre-bolt
bowl
and
element.
(2)
Unscrew the relief valve cap nut and withdraw the
relief val
(3) Remove the plunger, using tool
ve
spring.
and
remove the oil filter
180
A.IO
to
engage the
69.
When
thtJt
rebushing
the
buSh
Fig.
the
lorged-type
joint is
in
A.3
the
valve
rocker
position·
elfSUre
indicated
I
~
\
Section A.7
DIESEL ENGINE
A
VALVE ROCKER SHAFT AND
TAPPETS
RemoviDg
Valve
rocker shaft
(1) Disconnect
Unscrew the two rocker cover retaining nuts and
(2)
remove the two engine sling brackets.
(3) Remove the rocker cover, cup washers,
the
breather pipe from
the
rocker cover.
and
rubber
bushes .
. (4) Remove the eight nuts
four
plates from the rocker shaft brackets, and
lift
off
th~
rocker shaft assembly.
and
spring washerS,
and
Toppets
Carry
out
Withdraw
(5)
assembly
(6) Remo.ve
the
engine
The
tappets should
in
th.eir
the procedure
the
in
their original positions.
the
two covers from the left-hand side
and
original positions.
in
(1)
to
push-rods
lift the tappets
be
labelled
(4).
and
label them for
out
of
their hoUsings.
to
ensure reassembly
Dismantling
Valve
Tock~rsluJft
(7)
Remove the grub screw locating the rocker shaft in
the
front mounting bracket
(8)
Withdraw
and
spring washers from the ends
slid~
the rockers,
shaft.
(9) Remove
shaft
to
the
split
pins, remove
brackets,and
the
screwed plug fitted
clean
out
the oil-way.
•.
the
of
the shaft, and
springs from the
in
one
fiat washers
end
of
Inspection
(10) Check the ro·cker bush to rocker shaft clearance
against the figures given in
If
the rockers are
bushes are worn, the rockers should
If
the bushes are worn in forged rockers, they should
be
renewed using tools 18G 226
of
the pressed-steel type,
Fit new blishes with the·· butt
the
top
of
the rocker bore,
'GENERAL DATA'.
and
be
renewed.
and
180226
joint
positioned
and
drill oil holes
the
of
the
the
A.
at
in
Fig.
A.S
Fitting a valve
each bush
rocker.
the adjuster screw from the rocker
the end plug
(2·26
rom.) drill. Replace the drilled-out plug with
a rivet (part
The second hole
a No. 47, ·078 in. (1'98 mm.) drill,
shQuld then
'GENERAL DATA'.
(11) Ensure
that
the ends
(12) Check the diameter
figure in 'GENERAL
bottom face
rocker
bush
and18G
to
coincide with the oil-ways in
If
the holes are drilled after fitting, remove
and
No.
be
burnish-reamed
that
the
push-rods are peq"ectly straight
are
of
the tappets for wear.
226
bush, using a No. 43, ·089 in.
SC 2436) and.weld
in
the
bush should
not
damaged.
of
DATA'~
Reassembling
Valve
rocker shaft
(13) Reverse the procedure in (7)
Refitting
Tappets
(14)
Reverse the'procedu:re in (5)
U$ing
tools
18G
226
A
and
drill through
it
in position.
be
drilled with
and
the
to.
the
size given
the tappets against
·and examine
to
(9).
and
(6).
the
bush
in
and
the
the
(
\
Fig •
The
pressed-steel type
not
of
be
..4.4
valve·
rocker,
rebushed
which
should
Valve
rocker
(15)
Revers~
following points:
(a) Tighten
figure given
(b)
Adjust
in Section A.13.
Section A.8
Removing
(1) Remove the
to
(10».
(2) Remove
shaft
the
procedure
the
rocker bracket nuts
in
the
valve rocker clearance as described
in
'GENERAL DATA'.
CYLINDER
bonnet
the
radiator expansion tank.
and radiator (Section B.3, (1)
(1)
HEAD
to
(4), noting the
to
the torque
A.l1
A
Fig.
A.6
Compressing
(3)
Remove the bowl from the hydraulic filter
drain
(4)
Release and withdraw the suction pipe from the
top
of
(5)
Disconnect the hydraulic pressure pipe union
located just above
(6)
Release the hydraulic pressure pipe from the
bracket on the cylinder head by unscrewing the
two nuts and removing
(7)
Remove the three bolts securing the hydraulic
pump
(8)
Detach
pump
(9)
Remove the exhaust pipe and silencer from the
manifold.
(10)
Remove the air cleaner
(11)
Remove the fuel filter (Section C.5, (1) and (2) ).
(12) Disconnect and remove the fuel return pipe from
the injection pump.
(13) Remove the hydraulic tank (Section M.5, (1) to
(9)
).
(14)
Disconnect the high-pressure pipes from the
injectors.
(IS) Remove the feed and the three connecting links
from
(16)
Remove the rocker shaft and push-rods. (Section
A.7, (1) to
(17)
Withdraw the engine . breather pipe from the
bracket grommets. .
(18)
Slacken the water by-pass hose clips.
(19)
Remove the
and
A.12
the
valve
springs
the system.
the hydraulic reservoir.
the
mounting bracket to the cylinder head.
the drive belt and remove the hydraulic
from the engine.
with
engine oil filter.
the
CU'
clamp'.
to
manifold hose.
the heater plugs.
(5».
11
cylinder head nuts
lift the cylinder head off the cylinder block.
tool
18G
and
flat washers,
nmSEL
45
and
ENGINE
Dismaniling
(20) Unscrew the heater plugs from the cylinder head.
(21) Remove the two nuts and washers securing the
and
exhaust manifold,
securing both air
both manifolds away.
(22) Remove the spill pipe and clamps from the in-
jectors, and . withdraw the injectors from the
cylinder head, using tool
18G
284
P.
(23)
Unscrew the three nuts and remove the water
outlet elbow. Ease the outlet elbow gasket off
three studs
(24) Detach the spring clips from the valve cotters
using tool
remove the cotters,
the inner and outer valve springs, the valve oil seals,
and
the valve spring
(25)
Withdraw the valves from their guides, marking
them for reassembly
(26)
The combustion chamber inserts can be removed by
means
locatian in the
faces
machined after fitting
they are removed
ensure reassembly
(27)
The injector nozzle heat shields can
wards
combustion chamber inserts.
Inspection
(28) Check the cylinder head
(29)
Ensure
head are free
(30)
Check
'GENERAL DATA'.
and
withdraw the thermostat.
18G
45
of
a drift inserted thro'ugh the injector
top
of
the combustion chamber inserts are
out
of
the cylinder head after removal
that
the heater plug drillings in the cylinder
of
the
valve springs against the specification
the six nuts and washers
and
exhaust manifolds,
18G 284 and adaptor
to
compress the valve springs,
the
valve spring
bottom
of
the
in
carbon.
cups.
in
their original positi.ons.
the cylinder head. The lower
to
the cylinder head,
inserts should be labelled to
their original positions.
be
joint
face for flatness.
top
tapped up-
A
Fig.'
A.7
The
valve
guides
in position.
R
in.
(15 mm.)
Dimension
(A)
should
and
lift
the
aad,
collars,
and
of
the
be
in
if
(
\
..
(
DIESEL ENGINE
(31)
Check
the valve stem
figures given
guides
be
H in. (15 mm.) above the valve spring seat
surface
(32) Check the valve head stand-down against the
figure in
in
are fitted, the
of
the cylinder head.
'GENERAL
Reassembling
(33) Reverse the procedure
following points:
(a) Ensure
of
(b) Check
chamber inserts are
head face.
(c) Renew
,
of
of
washers.
(tl) ,Tighten the injector clamp' nuts
that
each
heat
that
the
the
heat
the injector
in
given
Refitting
(34) Reverse the procedure in (1) to (19), noting the
following points:
(a) Ensure
in
with
uppermost.
(b) Working
tighten
figUre
(c) Tighten
figure given
(d) Adjust
A.13).
(e)
Refill the hydraulic system (Section M.6).
(I)
Refill
(11)
(g) Bleed
that
a serviceable condition and' is fitted dry
the
the
given
the
the
the
or
Section B.6,
the
to
guide clearance against the
'GENERAL DATA'.
top
face
of
DATA'.
in
(20)
the
joint
washer under the flange
shield
is
in
serviceable condition.
the lower faces
not
pr()ud
corrugated washers
shields
'GENERAL
side marked
in
cooling system (Section B.I, (9) to
fuel system (Section C.8).
and
check the serviceability
to
heat shield flange
DATA'.
the cylinder head
'TOP'
the
order shown
cylinder head nuts
in
'GENERAL
rocker bracket nuts
in
'GENERAL
valve rocker clearance (Section
(6)
to
If
new valve
each guide should
to
(27), noting the
of
the combustion
of
the cylinder
in
the
bottom
joint
to
the figure
joint
washer
and
'FRONT'
in
Fig. A.9
to
the
torque
DATA'.
to
the torque
DATA'.
(9) ).
is
Fig.
A.9
Cylinder
head
nut
tightening
sequence
Section A.9
CAMSHAFT,
Removing
Timing
cover
(1)
Remove the radiator (Section B.3,
(2)
"Remove the hydraulic
(3)
Remove the dynamo
(2)
"
(4)
Remove the water
"'(5) Unscrew the starting
crankshaft.
(6)
Unscrew
drive pulley from
(7)
Withdraw the
shaft.'
(8)
Remove
'timing cover from the engine.
Injection
Carry
(9)
Remove the oil thrower from
(10)
Unscrew
pump
(11)
Unscrew the
flange from the injection pump chain wheel.
(12)
Detach
the
(13)
Remove
aild withdraw the injection pump driving chain
c01l1piete'
(14)
Remove
of
to
(5».
TIMING
the
GEAR, AND
PLATE
and
pump
four bolts
the
crankshaft pulley.
pump
drive belt (Section K.5,
(Section B.4, (3) to (5».
nut
and
cranksh~tpulley
th~
13
securing bolts and detach the
pump
driving
out
the
driving chain tensioner.,
the
face
of
the
camshaft driving chain wheel.
chain
and
procedure
the
two bolts
two halves
the injection
the
key from the frqnt
With
any
shims fitted
in
four
bolts
both
its chain wheels.
tensioner
(1)
and
and
of
the retaining' plate from
pump
on
ENGINE
(1)
drive belt.
from the front
detach, the hydraulic
from
to
(8).,_
th~
crankshaft.
remove
remove the driving
chainwheel.
of
the crankshaft
to
the
'
the
the
A
FRONT
(10) ).
of
the
crank-
injection
crankshaft
in
front
Fig.
The
top
faces
of
the
valves
cylinder
A = ·018
to
·038 in. ('46
A.8
should stand
.~ead
face
to
·97 mm.)
below
the
Camshaft
Carry
(15)
(16)
(17)
driving
out
Rotate'the
both
position shown
Unscrew
using
Unscrew
. driving chain tensioner.
chain
the
procedure in
crankshaft' until the timing marles
camshaft driving chain wheels are
the
tool
18G
the
and
tensioner
in
Fig. A.12.
,nut
from
98
A.
two bolts
(l)
to
(14)~
the
end
of
the camshaft,
and
remove the camshaft
in
on
the
A.I3
--=-==
nmSEL
II
9S
A
A
''';O'O:::==------=---A65
Fig.
A.lO
Slackening
(1S)
Withdraw the camshaft driving chain complete
with both
(19) Remove
the camshaft driving chain wheel.
the camshaft
its
chain wheels.
any
shims fitted on the crankshaft behind
nut
with
toollSG
Camshaft
Carry
out
the procedure
(20) Remove
(Section A.7, (1) to
(21)
Remove
(22)
Unscrew
locating plate.
(23) Withdraw
diseng~.ge
Engine
front plate
Carry
out
(20)
to
in
but is
not
(24) Disconnect
injection
(25) Remove
the
(26) Remove
nect the high-pressure pipes from the injectors.
(27) Disconnect and.remove the oil pipe from between
the chain tensioner packing block
pump
Unscrew
(28)
the crankcase and front main bearing cap, and
removepump
joint
the
the
fuel lift pump (Section C.4,
the
three bolts and remove the camshaft
the
from
the procedure in
(23)
(camshaft removal) may also be carried
necessary.
the
pump.
the
fuel feed and return pipes from between
injection
washer
pump
the
radiator expansion
chain wheel hub.
the
five bolts securing the front plate
the
front plate complete with injection
and
high-pressure pipes.
at
in
(1)
to
(19).
valve rocker shaft and tappets
(6».
camshaft, allowing
the oil pump drive.
(1)
to
throttle and stop controls from the
and
filter.
the
top
fixing hole.
.
(1)
to
(3)
it
to
rotate
(19). The procedure
tank
and discon-
and
the injection
Note
the separate
).
to
out
to
ENGINE
the chain tensioner packing block and the injection
pump
chain wheel hub.
(30) Remove the injection
(3) ).
(31)
Remove the chain wheel
Inspection
(32)
Examine the crankshaft front oil seal, and renew it
if
there is the slightest sign
(33)
Check both chain tensioners.
mouth
('OS
and
head
existing body, provided the body is
condition.
(34)
Check the clearance between
chain wheel hub
'GENERAL DATA'.
(35)
Fit
shaft,
float) between the locating plate
the camshaft journal.
the figure given in 'GENERAL DATA', renew the
locating plate.
Refitting
Injection
(36)
Reverse the procedure in (29) to (31), noting the
following points:
(a)
(b)
Engine
(37) Reverse·· the procedure
the fuel· system as described in
of
the body bore is in excess
mm.), the chain tensioner should be ·renewed;
if
the slipper head is badly worn, a new slipper
and
cylinder assembly should be fitted
the
locating plate
and
measurel· the clearance (camshaft end-
pump
chain
After refitting the injection pump driving
chain it
timing as described in Section C.6, (S4)
When all.fuel system unions have been reconnected, bleed
Section
will
C.S.
front plate
pump
(Section
hub
from the front plate.
of
wear
If
the
and
bearing against the figures in
and
chain wheel to
If
the end-float is outside
wheel
hub
be necessary to reset the injection
the
system
in·
(24) to
Section C.S.
C.6,..
or
damage.
ovality
of
in
serviceable
injection
and
the face
as
described in
(2S)
and
(1)
near
·003 in.
to
pump
the
to
bleed
to
the
the
cam-
of
(
(S7).
Injection
in (15)
sary.
(29) Disconnect
Carry
pump
out
the procedure
to
(28)
may
chain
and
wheel
hub
in
(1)
to (14).
also
be
carried out
remove the oil pipe from between
A.l4
The
but
is not neces-
procedure
Checking
the
chain
edge
Fig.
wheel
and
A.II
alignment
feeler
gauge
with
a straight-
Camshaft
(38) Reverse the procedure in (20)
following points:
(a)
Fit
the camshaft retaining plate with its white-
metal· face towards the camshaft.
(b) Bleed the fuel system as described in Section
C.8, after the lift pump has been connected
into the system.
(c) Adjust the valve rocker clearance as described
in Section
A.13.
to
(23),
DIESEL ENGINE
noting the
A
(
Camshaft
(39)
driving
Rev~J:'se
following points: .
(a) Secure
(b)
(c) To refit the chain tensioner, remove the plug
chain
and
tensioner
the proct!dure in (16) to
both
chain wheels,
shafts.
engine and check the chain
by
faces.
shims behind the crankshaft chain wheel
position it ·005 in. (·127 mm.) rearwards
camshaft chain wheel.
When the driving chain and wheels are
assembled
the timing marks line
from the base
the cylinder and spring into the slipper
plunger,
key, rotate the cylinder in a clockwisedirection until
the peg inside the plunger. Fit the slipper
Push both chain wheels towards the
nieans
assembly into the tensioner body, hold the
complete assembly in the closed position,
using the Allen
base,rotate
tion
the plunger peg. Still holding the assembly
closed, refit
of
a straight-edge across the teeth
Increase
until
or
to
their respective shafts ensure that
of
and
using a
it
is held
the cylinder
the helical groove
and
"decrease the thickness
up
the tensioner body. Assemble
in
key
.through the· hole
lock the plug in the· base
(19),
less
chain,
wheel' alignment
as shown in Fig. A.12.
tin.
(3·18
the closed position by
in
a clockwise direc-
is
felt to engage
noting the
to
their
of
to
of
the
mm.) Allen
and
in
the
of
Fig.
A.13
Using
too/18G 3
to
centralize
the
timing
cover
crankshaft
the tensioner . body
the closed position by wrapping with wire.
After fitting the chain tensioner
remove the wire.
Injection
(40)
. following points:
Timing
(41)
pump
driving
Reverse the procedure in
(a)
Check and adjust the chain wheel alignment
as described in (39)
teeth faces should be in line.
(b)
The timing marks
on
the injection pump driving flange should
be positioned as shown
are assembled to the engine.
(c) Refit the chain tensioner. as described in
,
(39)
chain
(c).
cover
Reverse the procedure in (1)
18G 3
to
centralize the timing cover
shaft,
and
fill
the
to (11)
or
Section B.6,
an,d·
secure the plunger
to
and
tensioner
(9)
to
(14), noting
(a),
but
in this case
on
both chain wheels
in
Fig. A.12 when they
to
(8), using tool
cooling system (Section B.l, (9)
(6)
to (9) ).
on
the engine,
on
the
crank-
the
in
the
the
and
Fig.
Showing
the
positions
timing
1.
Injection
2.
Injection
3.
Crankshaft chain
4.
Crankshaft chain wheel-camshaft drive.
S.
Camshaft chain wheel. .
pump
pump
oj
gear
is
correctly
..
driving flange.
chain wheel.
wheel~injection
A.12
the
timing
assempled
marks
when
pump drive.
the
Section A.tO
FLYWHEEL AND BACK PLATE
Removing
Flywheel
(1)
Remove the clutch (Section
(2) Remove the six flywheel to. crankshaft bolts
withdraw
the
flywheel from the
Backplate
Carry out the procedure in
(3)
Unscrew the six bolts and remove the oil seal
housing from the back plate. .
(4)
Remove the
from
the
in the groove
12
bolts and withdraw the back plate
two locating dowels, noting the
in
the back plate.
(1)
0.2,
(l).to
two
locating dowels.
and (2).
(23)).
'0'
and
ring
A.IS
A
DIESEL ENGINE
Inspection
(S)
Examine the crankshaft oil seal,
there is
(6) Examine the starter ring teeth for wear
If
a hole and splitting it with a hammer
Heat
perature given in 'GENERAL
of
change from pink
correc}:.
facing away from the flywheel register.
the
slightest sign
necessary, remove
the new starter ring uniformly
temperature-indicating paint
to
Fit
the starter ring with the
of
damage.
the
starter ring by drilling
grey when the temperature is
DATA';
Refitting
Backplate
(7) Reverse the procedure
in
(3) and (4).
Flywheel
(8) Refit the flywheel and tighten the bolts
figure given in 'GENERAL
(9) Reverse the
noting
(40)
(b),
(10) Adjust the cllitch pedal free movement (Section
D.1,
(11) Bleed
(12) Refill
Section
SUMP,
A.II
CRANKSHAFT, AND MAIN BEARINGS
procedu~
the
points mentioned
(c),
and
(e):
(1)
to
(3)
).
the
fuel system (Section C.8).
the
hydraulic system (Section M.6).
D:ATA'.
in
Section D.2, (1)
in
Removing
Sump
(1)
Drain
the sump.
(2)
Remove the radiator (Section B.3, (1)
(3) Raise the front
under the gearbox.
(4)
Remove the front axle (Section G.1, (2), (3), (5),
(6)
and
(7) ).
(S)
Take the weight
(6) Remove the clutch (Section D.2, (3)
(21)
to
(23) ).
(7) Remove the flywheel
(2)
to
(4».
(8) Remove the
sump
to
the engine, noting:
(a)
The
(b)
THe
bearing cap joint.
Oil strainer
Carry
out
the procedure in (1)
(9)
Unscrew the two bolts securing the oil suction pipe
flange
to
oil stra:;.ner bracket
oil strainer and suction pipe.
A.16
of
the tractor and place a support
of
the engine on a crane.
and
13
bolts
the crankcase
'0'
ring
at
the oil pick-up
oil sealing strip
the sump
and
to
back plate (Section A.IO,
and
two nuts securing the
and
remove. the
at
the sump
to
(8).
the
two bolts securing the
the
sump, then remove the
and
renew it
or
da~age.
and
to
the temthe strip
on
the ring will
tooth
chamfer
to
the
Section D.2,
to
(10) ).
to
(16)
sump
joint.
to
front
chisel.
torque
to
(23),
and
from
main
if
Crankshaft
Carry
(10) Remove the engine front plate (Section
(11) Unscrew
(12) Remove the main
(13) Remove the crankshaft, the main bearing
and
main
bearings
out
the procedure in (1) to (8).
(S), (7)
caps with their bearing halves,
necting rods
rods and caps should be marked
in their original positions.
bearing bottom halves,
The
be
their correct positions.
to
(19),
and
the
connecting
up
washers positioned
main bearing caps,
marked
halves,
on
the faces
and
to
ensure
the
two
of
the centre bearing housing.
(2S)
to
(28».
rod
cap bolts, remove the
the cylinder bores. Connecting
"bearing cap bolts, caps, main
and
the two
on
the faces
and
the crankcase, should
that
the caps are replaced in
half
thrust washers positioned
A.9.,
and
push the con-
to
ensure refitting
half
of
the centre cap.
(2)
thrust
Inspection
(14) Check the crankshaft journals for
figures in 'GENERAL DATA'.
(IS) Check the crankshaft
against the figures in 'GENERAL
(16) Check
Refitting
Crankshaft
(17)
(18) Refit the front plate and timing gear by reversing
(19) Ensure
. the engine,
the
crankshaft end-float against the figures
in
'GENERAL DATA', and adjust the end-float
by
selective assembly
and
main
bearings
Fit
the main bearings
crankcase
the
to
the
the
(19),
(a) Check the chain wheel alignment as described
(b)
(e) Ensure
(d) Use tool 18G 3 to centralize
are
connecting rods
bolt -heads should be towards
figure given
and
caps, fit the crankshaft
crankcase; tighten the main bearing cap bolts
torque
procedure
and
in
Refit the timing chain tensioners as described
in
in Fig. A.12.
to
correctly located in the rods
figure given
in
(2)
to
Section A.9, (39) (a)
Section A.9, (39) (c).
that
the crankshaft.
that
the connecting
and
in
'GENERAL DATA'.
to
main
of
the thrust washers.
and
in
Section A.9, (25)
(5), noting the following points:
the timing marks line
to
the
crankshaft noting
tighten the bolts
wear
against
bearing clearance
DA~A'.
thrust washers
'GENERAL DATA'.
to
and
(40)
the
rod
big-end bearings
and
caps. Refit the
the
camshaft side
to
to
and
caps
(28), (7)
(a).
up
as shown
timing cover
that
the torque
Oil strainer
(20)
Fit
the oil strainer
and
tighten the suction pipe flange bolts before
tightening the oil strainer bracket bolts.
~nd
suction pipe into the sump,
Sump
(21) Refit the sump
securing bolts and nuts evenly.
to
the crankcase and tighten the
to
top
the
the
to
to
the
of
/
;
\.
DIESEL ENGINE
A
(9) Remove the rocker shaft
A.7,
(1) to (5) ).
(10) Remove the cylinder
(11)
and
(12), (14) and (15),
(11) Unscrew
caps
connectin'g rods
cylinder bores. The connecting rods ,and caps
should be marked
original positions.
the
connecting
with their bearing
and
and
push-rods (Section
head
(Section A.S, (6) to (9),
and
(17)
to
(19) ).
rod
cap
bolts, remove the
halves~
pistons
to
and
withdraw the
fro~
the
top
ensure refitting in their
of
the
Pistons . "
Carry
(jut the procedure
(12)
Mark
the pistons
'the,circlips,
Fig.
A.I4
Refitting a piston
lSG
55
(22)
Fit
the
back
and
(S».
(23)
Fit
the
SectionD.2,
following points:
(a)
Position the clutch driven plate
in
Section D.2, (40) (b)
(b)
(
\
(24)
(25) Bleed
(26) Refill
(27) Refill
(2S) Refill
Adjust
, described
(c)
When
injection pump, ensure
the
Refit
the
procedure
B.3~
(1)
to
the
the
the
Section B.6
the
and
connecting rod, using tool
A
to
~ompress
plate
clutch by ,reversing
(21)
to
the clutch pedal free movement as
in
Section D.1,
connecting
pump
has its full range
front axle
in Section
(10).
fuel system (Section C.S).
hydraulic system (Section M.6).
cooling system (Section
(6)
to
sump.
the piston
and
flywheel (Section A.10, (7)
(23)
and
and
the
stop control cable
that
and
radiator by reversing the
G.l,
(2)
(9) ).
ring~'
the
procedure in
(3)
to
(16),
(c). '
(1)
to
(3).
the stop lever
of
movement.
to
(7)
B.l,
as
and
(9)
noting
the
described
to
the
on
Section
to
(11)
or
.
release the pistons from the connecting rods.
Inspection
(13) Check the big-end bearing
against the figures
(14) Check the connecting
(15) Check the gudgeon
in 'GENERAL DATA'.
(16) Check the piston ring
figures
(17) Check the piston ring
bore,
Refitting
Pistons
(18) Refit the pistons
that
the combustion
on'the
big-end' cap.
Connecting rods
(19)
Fit
the connecting
cylinder bores, using
" the piston rings.
and
in
'GENERAL
against
opposite side
in
(1)
to
(11).
to
ensure correct refitting, remove
press
out
the
gudgeon pins
to
crankpin clearance
in
'GENERAL
rod
alignment. ,
pin
clearance
DATA'.
again~t
'
grooveclearan~e
DATA'.
gap,
in
an
unworn
the figures
in
'GENERAL
to
the
connecting,rods, ensuring
trough
in
the
'piston crown is
of
the connecting rod
rods
and
pistons into
tool
18G,55 A to compress
the figures
against
part
DATA'.
the
'
of
the
to
the
the
to
Section A.12
CONNECTING
Removing
Connecting rods
(1)
Drain
the
s'ump.
(2) Remove the radiator (Section B.3,
(3) Raise
(4) Remove the front axle (Section
(5)
(6)
(7)
(8) Remove the sump (Section A.11,
the
,'front
under
the
gearbox.
(6),
and
(7)
Take
the
weight
Remove the clutch (Section D .2,
(21)
to
(23) ).
Renlove the flywheel
(2)
to
(4)).
RODS
of
the
).
of
the
"
AND
PISTONS
(1)
to
trilctor
and
and
place a support
G.l,
(2), (3), (5),
engine
on
a crane.
(3)
to
backplate (Section A.I0,
(S».
(10».
(16)
and
The correct assembly
pistons to the crankshaft
Fig •
.4,.15
of
the connecting rods and
A.17
A
Fig.
A.16
Checking and adjusting the
(20) Ensure
that
the big-end bearings are correctly
located in the connecting rods
connecting rods and caps to the crankshaft with the
bolt heads towards
The combustion troughs in
should now be
on
to the camshaft. Tighten the connecting rod bolts
to the torque figure given
NOTE.-The
big-end bearings
connecting rods, and the rods should be fitted so that
the
bearingS
of
Nos. 1 and 3
rear of the engine, and the bearings
are offset towards the front (see Fig. A.l5).
(21) Refit the cylinder head by reversing the procedure
Section A.S, (17) to (19), (14)
in
(12), and
(a)
(6)
to (9), noting the following points:
Ensure that the cylinder head
a serviceable condition
side marked 'TOP' and
(b) Working in the order shown in Fig. A.9,
tighten the cylinder head
figure given
in
(22) Refit the rocker shaft
the prccedure in
Section A.7, (1)
the rocker bracket nuts to the torque figure given
in 'GENERAL DATA', and adjusting the valve
rocker clearance
(23) Refit the sump
securing bolts
Fit
(24)
(25)
the back plate
(7)
and
(S)
Fit
the clutch by reversing
Section-D.2, (21)
as
to
and
).
to
following points:
(a)
Position the clutch driven plate as described
in Section D.2,
(b) Adjust the clutch pedal free movement as
des~ribed
(c) When connecting the stop control cable to the
in Section D.1, (1)
injection pump ensure
the pump has its full range
A.I8
valve
rocker clearance
and
the camshaft side
the
the opposite side
in
'GENERAL DATA'.
are
and
is fitted dry with the
'FRONT'
nuts
'GENERAL DATA'.
and
push-rods by reversing
described
in
the crankcase and tighten the
nuts evenly.
and
flywheel (Section A.10,
(23) and (4)
(40)
(b)
and
that
DIESEL ENGINE
caps,
a~d
fit the
of
the engine.
piston crowns
of
the engine
are
offset on the
offset towards the
of
Nos. 2 and 4
and
(15), (11)
joint
washer is in
uppermost.
to the torque
to
(5), tightening
Section A.13.
the
procedure in
to
(16), noting the
(c).
to
(3).
the
stop lever
o.f
movement.
and
on
(26) Refit
procedure in
B.3, (1) to
(27) Bleed
front axle
(10).
the
fuel system (Section C.S).
Section
and
radiator by reversing the
0.1,
(2)
to (7)
and
Section
the
(28) Refill the hydraulic system (Section M.6).
B.1,
(9)
to
(11)
(29) Refill the cooling system (Section
Section B.6,
(30)
Refill the sump.
(6)
to (9)
).
or
Section A.13
VALVE ROCKER CLEARANCE
of
The clearance between the ends
the valve rockers is checked
Crank
check
the
the
engine until
clearance
of
by
No.8
No.1
fully closed.
To
adjust the clearance, hold the adjusting screw with
a screwdriver and slacken the locknut. Rotate
ing screw until the clearance between the valve stem and
rocker is as given in 'GENERAL DATA'. Hold the
adjustings("Tew against rotation and lock it in position
with
Transfer pressure adjuster. 55. Metering valve. 9S. Vented locking screw for hydraulic head.
13.
Sleeve retaining spring.
56.
Linkage hook.
99.
Vent screw.
14.
Filter.
57.
Spring retainer.
100.
Drive hub.
15. Inlet connection.
58. Linkage spring. 101.
Drive hub seal.
16.
Washer for inlet connection. 59. Linkage washer.
102. Drive shaft screw.
17. Fuel
feed
pipe connection.
60. Pivot ball washer. 103. Spring washer for screw.
IS.
Olive for fuel feed pipe.
61. Backing washer.
104.
Support washer.
19.
Transfer pump seal.
62. Linkage nut. 105. Quill shaft.
20.
Transfer pump rotor.
63. Keep plate.
106. Cover plate.
21. Transfer pump vanes.
64.
Control cover stud. 107. Gasket for cover plate.
22. Transfer pump liner.
65.
Tab washer for stud.
lOS.
Screw for cover plate.
23.
Hydraulic head and rotor assembly.
66.
Nut
for stud.
109. Washer for screw.
24. Rotor plug.
67.
Washer for nut.
110.
Advance unit housing.
25. Washer for plug.
6S.
Throttle shaft.
111.
Gasket for housing.
26. Hydraulic head seal.
69.
'0'
ring for shaft.
112. Stud for housing.
27.
Banjo pipe.
70. Dust cap for shaft.
113. Cap nut for stud.
2S.
Bolt for banjo pipe.
71.
Nut
for shaft.
114.
Washer for cap nut.
29. Washer for bolt.
72.
Washer for nut.
115.
End plug for housing.
30.
Radial connection.
73.
Throttle arm. 116.
'0'
ring for plug.
31.
Washer for connection.
74. Shut-off shaft.
117.
Spring cap for.housing.
32. Adjusting
plate-bottom.
75.
'0'
ring for shaft.
11S.
'0'
ring for spring cap.
33.
Adjusting
plate-top.
76. Dust cap for shaft.
119.
Screw for spring cap.
34.
Roller.
77.
Nut
for shaft.
120. Washer for screw.
35.
Roller shoe.
78. Washer for nut.
121. Advance piston.
36.
Drive plate.
79.
Shut-off lever.
122.
Outer spring for piston.
37. Drive plate screw.
80. Idling stop screw.
123. Inner spring for piston.
38. Cam ring.
81.
Locknut for screw.
124.
Hydraulic head locating bolt.
39. Cam advance screw.
82.
Washer for
nut~
125.
Outer
'0'
ring for bolt.
40. Circlip.
83.
Maximum speed stop screw.
126.
Inner
'0'
ring for bolt.
41. Drive shaft.
84.
Locknut for screw.
127. Washer for bolt.
42. Thrust sleeve.
85. Washer for mit.
128.
Non-return valve ball.
43. Thrust washer.
86.
Sealing cap.
e
III
.... , ...
11"",""".11
••
"""""" " "",.""""
••••••
11
••
".11,
••••
++++
...... , ••••••
11
................ +++++++++++++++
..
+++++'
"",",,
..
11",
•••••
,+++++++++++++++,
""",
•• , ••
".11
•••••
" ... ,
........
""'"
•••••••••• ,
••••••• , '""
..
..........j
~
OWNERS
NOTES
(
\
\
FUEL SYSTEM (Diesel Models)
Section C.3
FUEL TAP
Removing
(1) . Turn the fuel tap off.
Disc9nnect the fuel supply pipe
(2)
return pipe
from
their connections
and
injector spill
on
the fuel tap.
(3) Drain the fuel tank.
(4) Unscrew the fuel tap from the fuel tank.
Inspection
(5) Thoroughly clean the pencil-type filter gauze,
to
attached
the fuel tap, with fuel
(6) Inspect the pipe connections
and
a stiff brush.
in
the fuel tap for
damage to the threads and seats.
Refitting
(7) Reverse the removal procedure
bleed the fuel system (Section
in
C.S).
(1)
to
(4),
Section C.4
FUEL ·LIFT
Removing
(1) Turn the fuel tap off.
(2) Disconnect the two fuel pipes from the lift pump.
(3) Unscrew the two nuts and withdraw the lift pump
from the engine.
PUMP
and
Fig. C.4
Section through the
1. Diaphragm spring. 9. Clamp.screw.
2.
Diaphragm.
3. Pump cover.
4.
Outlet valve.
5.
Inlet valve. 13. Operating link.
6.
Filter gauze.
Sealing ring. 15.
7.
8.
Filter bowl.
fuel
lift pump
10.
Steel
11.
12.'
14.
16.
w~her.
Sealing washer.
Pull rod.
Rocker arm return spring.
Pump
body.
Rocker arm.
Dismantling
(4)
Scribe a mark across the pump body and cover
joint flanges for location purposes during reassembly.
(5)
Slacken the clamp screw
and
remove the pump
filter bowl.
(6)
Withdraw the bowl sealing ring and the filter gauze
from the pump cover.
(7)
Remove the
five
screws
and
separate the cover
. from the pump body.
(S)
Press the centre
wards and rotate it through
pull-rod
from· the operating link. Withdraw the
of
the diaphragm lightly down-
90° to disengage the
diaphragm assembly and remove
washer, steel·washer, and
the pull-rod.
(9)
If
the rocker arm assembly is to be removed,
.
diaphragro spring from
secure. the rocker arm in a vice and tap the face
the pump mounting flange with a soft mallet until
the rocker arm pin retainers
are dislodged.
the
sealing
of
Inspection
(10)
Examine the
pump
body and cover for cracks
damaged threads, and ensure that the faces
mounting and diaphragm flanges
(11)
Examine the diaphragm for splits or cracks.
(12)
Check the rocker arm pin and linkage for wear
are true.
damage.
(13)
. Check' the operation
in the pump cover.
the valve assemblies
of
the inlet and outlet valves
If
they are not serviceable prise
out
of
the cover with a screw-
driver, renew the valve gaskets, and fit new valve
assemblies into position. Press the new valve
assemblies fully home and stake the cover casting
in six places round each valve with a punch.
of
or
the
or
C.s
c
FUEL SYSTEM (Diesel Models)
Section C.S
Main fuel filter components
1.
Centre bolt.
2. Washer.
3. Filter head.
4. Sealing plug.
5. Copper washer.
6. Non-return valve.
'Ao---IO
1188!&!ii~:-JJ
1-----11
Fig.
C.S
7.
8.
9.
10.
11.
A
6590
Sealing ring.
'0'
ring.
Element.
Sealing ring.
Filter
base.
MAIN
FUEL
FILTER
Removing,
(1)
Disconnect the fuel pipes from the filter head.
(2)
Remove the two bolts from the filter head mounting flange and withdraw the filter from the engine.
Dismantling
(3)
Unscrew the centre-bolt
detach the base from the filter.
(4)
Separate the filter element from the filter head.
(5)
Remove the sealing ring from the filter base, and
the sealing ring and
(6)
·Remove the non-return. valve from
connection and the sealing plug from No. 4
(outlet) connection·
in'
the filter head and
'0'
ring from the filter head.
in the filter head.
Inspection
(7)
Examine the filter head and base castings for
damaged threads, damaged seal seats, and cracks.
(8)
Check the operation
of
the non-return valve.
Reassembling
(9)
Reverse the procedure
in
(3)
to
(6).
Refitting
(10)
Reverse the procedure in (1) and
fuel system as described in Section
(2),
C.S.
Section C.6
No.3
(in1et)
and bleed the
(
Reassembling
(14) Reassemble the rocker arm, operating link,
packing washers, onto the rocker arm pin. Place
this assembly, and the rocker
into position in the pump body and tap two new
rocker
arm pin retainers into the grooves in the
body casting. When the retainers are
secure them
grooves.
(15) Fit the diaphragm spring, steel washer, and sealing
washer onto the
the pump body with the notched fiat on the lower
of
end
operating link.
and rotate it through
with the operating link.
(16)
Push the rocker arm towards the pump until the
diaphragm is level with the body joint flange. Hold
the rocker
body with the scribe marks in line,
five
screws evenly.
(17) Refit
Refitting
(18) Reverse the procedure in
fuel
system as described in Section
C.6
in
position by staking· the ends
pull·rod. Insert this assembly into
the pull·rod in line with the slot in the
Press the diaphragm downwards
90°
arm
in this position, fit the cover to the
the filter gauze, sealing ring, and
arm
to engage the pull-rod
(1)
to (3), and bleed the
and
return spring,
fully
home
of
and
tighten the
:filter
bowl.
C.S.
the
FUEL INJECTION PUMP
Removing
(1)
Disconnect the throttle and stop controls, and the
fuel feed and
pump.
(2)
Disconnect the high-pressure pipes from the
injectors.
(3)
Remove the three securing nuts and plain washers
and withdraw the injection pump from the engine.
Dismantling
(4)
Disconnect the high-pressure pipes, remove the
cover-plate from the side
and drain the
(5)
Withdraw the quill shaft from the drive hub and
check the drive hub end-float by inserting a feeler
gauge between the drive hub and pump body.
The end-float should not exceed
Excessive end-float can be corrected by renewing
the pump body and the governor weight retainer.
(6)
Mount the pump on assembly base 18G
secured in a
pressure connections from the hydraulic head.
(7)
Unscrew the nuts and remove the shut-off lever
and throttle arm from their shafts. Withdraw the
dUst
cover from each shaft and remove the two
nuts and washers securing the control cover.
return pipes, from the injection
of
the pump housing,
fuel
oil from the pump.
·010
in.
vice
and remove the four high-
(·254
mm.).
633
A
FUEL SYSTEM (Diesel Models)
(S)
Press the throttle shaft downwards and withdraw
the control cover complete with shut-off shaft.
Discard theco'ntrol cover gasket.
(9) Detach the governor spring from the governor arm
and the shut-off
Remove the two control cover
set screw securing the control bracket. Detach the
keep plate and lift the control bracket assembly
from the pump.
(10)
Disconnect the metering valve from the linkage
hook and
place the valve in a container of, Shell
Calibration Fluid
ground surface.
(11)
Disconnect the linkage hook from the governor
arm. Detach the governor arm spring
the governor arm from the
(12)
Slacken both the spring cap and end plug in the
advance unit. Remove the hydraulic head locating
bolt complete
not
side
(13)
Remove
to
of
with its outer
lose the non:-return valve ball located in the
the head locating bolt.
the
cap-nut
advance unit from the pump. Detach the inner
ring
and
washer from the head locating
and discard the advance unit
(14)
Unscrew the spring cap and
advance unit
and
the piston. Note the 1 mm. shim inside the spring
cap.
(15)
Remove the end plug and
,
advance unit.
(16)
Unscrew the cam advance screw from the cam ring,
with spanner
(17)
Slacken the fuel inlet connection
ISG 646.
screws and studs securing the end plate to the
hydraulic head. Lift
and withdraw the transfer pump liner.
(1S)
Unscrew the fuel inlet connection
the regulating valve components in the following
order: sleeve retaining spring, nylon filter, transfer
pressure -adjuster, regulating spring
regulating sleeve with piston and joint washer, and
lastly the piston retaining spring.
(19)
Hold the drive hub with tool lSG 659 and, using
spanner
lSG 634, slacken the transfer
by turning it in the direction of pump rotation as
shown
on the pump nameplate.
(20)
Remove the two hydraulic head locking screws,
one
of
which incorporates an air vent valve, and
withdraw the hydraulic head and
from the pump. Remove the
I
I
\
'--
groove in the periphery
(21)
Unscrew the transfer pump rotor,
,the pumping
out
fall
(22)
Stand the hydraulic head with the drive plate
and
of
the hydraulic head.
uppermost. Hold the drive plate· with spanner
180641
and unscrew the two drive plate screws
bar
from the control bracket.
studs and
'C'
to protect its precision-
and
the
small
separate
control bracket.
'0'
ring, and take care
and
washer, and' withdraw the
bolt
hole,
sasket.
'0'
ring
from
withdraw the two springs and
'0'
ring from the
and
remove the
out
the transfer
of
the hydraulic head.
pump
and
pump
rotor
'0'
ring from the
but
do
vanes
withdraw
and
peg,
rotor
assembly
not allow
distributing rotor assembly to
'0'
the
(see Fig. C.7). Remove the drive plate and
adjusting plate,
and
withdraw
the
rollers and shoes
from the pumping and distributing rotor.
(23) Withdraw the rotor from
the
hydraulic
remove the 'bottom adjusting plate, and refit
rotor to the hydraulic
head~
Immerse the head
rotor assembly in Shell Calibration- Fluid
protect the working 'surfaces.
(24) Withdraw the cam ring from the
noting the arrow etched
on
pump housing,
the visible
face
cam ring. This arrow indicates the,direction
rotation as shown on the
(25) Remove the cam ring locating
the pump, using circlip pliers
(26) Hold the drive hub with tool 18G
torque adaptor 18G
pump
nameplate.
circ1ip
ISO
644,
unscrew the drive
from inside
1004.
659
and~
screw from inside the' drive hub. Withdraw
drive shaft
and
governor weights assembly
inside the pump housing.
(27) Remove the
ring, the weight
reta~ner,
'0'
thrust washer, and sleeve from the drive shaft.
from
the
(28) Withdraw the drive hub
pump and remove
the spring washer and support washer from inside
the drive hub.
oil
(29) Remove the drive hub
housing, using tool lSG
seal from the
65S.
Inspection
(30) Wash all components in Shell Calibration
'C';
hold the pumping plungers in their bores
blowout the passages in the
rotor
with compressed
air.
(31) Remove the pumping plungers one at a time
examine them and their bores in the rotor for wear
Fig.
C.6'
Removing
the
drive
hub
18G
oil
658
seal,
using
extractor
top
head,
the
and
'C'
to
of
the
of
with
shaft
the
from
weights,
pump
Fluid
and
and
C.7
c
FUEL SYSTEM (Diesel Models)
Fig.
C.7
Holding the drive plate with spanner
unscrewing the drive plate screws
and abrasion.
polished where
plungers should be replaced in their original
positions.
(32)
Examine the hydraulic head bore·
surface
of
worn, renew the
(33)
Check the cam ring lobes for wear, the plunger
rollers for flats, and the roller shoes for freedom
their guides in the rotor.
(34)
Fit the drive plate
that
splines.
on
these components
there is no excessive radial movement
Th~
end
of
it
contacts the roller shoe, and the
the rotor for wear or scoring.
or
the pumping plungers are
rotor
and head as a unit.
to
the drive shaft
18G
641
each plunger
and
when
will
its mating
If
either
and
ensure
on
be
in
the
(35) Check
(36) Inspect the bore
(37) Check all springs for fractures
that
the transfer
fit
in
their slots when lubricated with fuel oil.
and
wear
freely through it.
the governor weight retainer, thrust washer, and
sleeve for signs
ensure that the valve piston can move
of
pump
vanes are a sliding
of
the regulating valve sleeve for
and
weakness, and
wear.
Reassembling
Rinse the components in clean Shell Calibration Fluid
'C'
and assemble them wet.
(38)
Fit
a new drive
using
tool18G
into the oil seal
tinuous black line should
plug.
(39)
Fit
the two washers into the drive hub and insert
the hub into the hub oil seal.
Using tools 18G
(40)
governor weights, thrust washer, and sleeve, to the
weight retainer (see Fig. C.8). The stepped flange
of
the sleeve must go away
(41) Slide the governor weight assembly onto the drive
shaft,
fit
shaft splines and a new
the drive shaft.
(42) Insert the drive shaft and weight assembly into the
pump housing and engage
with the splines in the drive hub. Fit the drive
shaft screw and, using tool
drive hub, tighten the screw with adaptor 18G 664
to
the torque figure given
Check the drive hub end-float as described in (5).
(43)
Using circlip pliers 18G 1004,
locating circlip against the shoulder in the pump
hub
oil seal
663.
Insert inspection plug 18G 660
and
examine the oil seal; a con-
661
and
protection cap
to
the pump housing,
be
visible through the
18G
662, assemble the
from
the thrust washer.
180
657 over the drive
'0'
ring
in the groove on
the
drive shaft splines
18G
659
to hold the
in
'GENERAL DATA'.
fit
the cam ring
(
\
Fig.
C.S
Assembling the governor weights, thrust washer, and
thrust sleeve into the weight retainer, using tools
18G
661
and
18G
662
C.8
Fig.
C.9
Holding the drive hub with drive
18G
tool
with torque adaptor
659 while tightening
18G
664
18G
537
shaft
screw assembly
the
drive shaft screw
and
torque wrench
(
Assemble the top adjusting plate and the drive plate
with the slots in their
mark
on
scribed
the pumping
housing. Place the cam ring in position against the
circlip
and
ensure that the direction
on the visible face
the
directiolJ.
of
the arrow
Fit the cam advance
the cam ring
for· freedom
hydraulic head and rotor are being renewed, ensure
that the direction
of
the
rotor
conforms with the direction
arrow
on
the pump nameplate.
(44) Withdraw the rotor from the hydraulic head and
fit the top adjusting plate· so that the slot in its
is
periphery
(see Fig.
in line with the mark on the rotor
C.l
0).
(45) Fit the drive plate to the rotor with its relieved face
top
next to the
periph~ry
on
the
rotor
screws lightly
adjusting plate and the slot in the
of
the drive plate
(see Fig.
and
assemblies into their guides
sure
that
the contour
forms.with the contour
top adjusting plate.
(46) Fit the bottom adjusting plate, engaging its slots
with the lugs on the top
ensuring
that
the. c()ntour
matches the contour 'of the roller
(47) Insert the rotor assembly into the hydraulic head,
fit.
then
. Stand the head and rotor assembly
(48)
and lightly tighten the transfer pump rotor.
drive plate uppermost.
180
adaptor
653
to high-pressure outlet
and connect this assembly
109
18G
(49) Operate the
and
A (see Fig. C.l2).
. pumping lever
tum
the
rotor
rotation until the pumping plungers are forced
outwards as far as the eccentric ,slots
will
ing plates
position.
allow; this is the maximum fuel
Using
tool18G
FUEL SYSTEM (Diesel Models)
Fig.
C.10
periph~ries
of
the cam ring conforms with
screw·
of
the arrow
C.1
insert the roller
of
of
A, preset
'V'
in the normal direction
aligned with the
end
of
th~
rotor
of
0;1.1
the pump nameplate.
finger-tight and check,
of
rotation.
on
the pumping end
in
line with. the mark
0). Tighten die drive plate
in
the rotor. Make
the roller shoe ears con-
the eccentric slots in the
adjustin~plate,
of
the
e~entric
shoe ears.
on
Fit
the relief valve timing
at
J 5 atmospheres
on
the'
hydraulic head
to
testing machine
of
the
testing
in the adjust-
656,
rotate the adjusting
the arrow
If
the
of
the
and
shoe
and
slots
the bench
machine
of
Fig.
C.ll
Tightening the transfer pump rotor, using
wrench 180536 and tools 180659' and
18G
torque
634
plates as necessary to set the roller-to-roller
dimension
at
the figure given in 'GENERAL
DATA' (see Fig. C.12). Hold the drive plate with
180641
tool
to
the torque figure given in 'GENERAL DATA'.
and tighten the drive plate screws
Disconnect the adaptor from the hydraulic head.
(50)
Rotate the drive shaft in the pump housing to
at
12
position the master spline
~O'
ring to the groove in the, periphery
hydraulic head
and
align the master spline in the
o'cloc~.Fit
drive plate with the metering valve bore
hydraulic head. Lubricate the periphery
of
hydraulic head and the bore
liberally with clean Shell Calibrated
the pump housing
FI uid 'C' and
assemble the hydraulic head to ,the pump body.
Fig.
C.12
Setting the roller-ta-roller dimension, using a micro-
meter
and tools 18G
109
A and
18G
653 A
a
of
in
of
new
the
the
the
C.9
FUEL
Fit the two hydraulic head locking screws fingertight, positioning the screw with the vent valve
above the pump nameplate.
(51)
Hold the drive hub with tool
spanner 18G 634, tighten the transfer pump rotor
to the torque figure given
(see Fig.
C.ll).
Fit the transfer pump liner and
insert the transfer pump vanes into their slots.
(52)
Ensure that the locating peg
pump end plate and seat the piston retaining spring
of
in the bottom
(53)
Fit
a new seal washer to the small-diameter end
the regulating valve bore.
the regulating valve sleeve and fit the piston into
the
sleeve.
Insert the regulating spring and peg
into the large-diameter end of the sleeve and place
the transfer pressure adjuster
Fit
sleeve.
the sleeve retaining spring onto the
pressure adjuster and pass the filter, small end
leading, over the spring and onto the shoulder
the valve sleeve. Insert this assembly, valve
first, into the bore
of
the end plate and
inlet connection and washer.
(54)
Place a new sealing ring in its recess in the hydraulic
head face
and,fit the end plate to the head,engaging
the locating peg with the slot in the transfer pump
liner. Tighten the end plate screws and studs to the
torque figure given in 'GENERAL DATA', then
tighten the fuel inlet connection to the torque
in
figure given
(55)
Using spanner 18G
'GENERAL DATA'.
646,
screw to the torque figure given in 'GENERAL
and
DATA'
check the cam ring for freedom
rotation.
(56)
Fit
new
'0'
rings to the advance unit end plug and
spring cap, using protection cap 18G
the rings over the threads. Screw the end plug
finger-tight into the end
the fuel duct enters the bore. Fit the piston into the
advance unit, with its counterbored end at the open
end
of
the housing, and place the two springs in
position in the piston.
washer inside the spring cap and screw the cap
finger-tight into the housing.
end plug are renewed, ensure that the
the same identification letter as the component it
replaces.
Unmarked components should be used
to replace unmarked components.
(57)
Fit a new
'0'
ring under the head
head locating bolt, using protection cap
Position the non-return valve ball in the side
head locating bolt and fit the bolt to the advance
unit.
Using assembly cap
·0'
ring to the shank
of
the plain washer on top
(58)
Place a new advance unit joint washer on the pump
housing with the straight side
hole
at
the drive end
of
this joint washer should be fitted dry. Position the
advance unit
on
the pump,
and rubber washer to the stud, and
C.10
180
in
'GENERAL DATA'
is
in position
on
tighten the cam advance
of
the advance unit where
Place the 1·0 mm. shim
If
the spring cap
180647,
the locating bolt, and place
of
the
'0'
of
the pump; to ensure sealing,
fit
a new aluminium
SYSTEM (Diesel Models)
659
and, using
'C'
in
the
of
the top of the
sleeve
fit
the fuel
640
to pass
new
part has
of
the hydraulic
·18G
639.
of
the
fit
anew
inner
ring.
the 'D'-shaped
fit
the cap nut.
of
of
or
Setting the governor link length (the dimension
between the metering
cover
(59) Tighten the two hydraulic head locking screws, the
(60) Insert the metering valve into its bore in the
(61)
(62)
(63)
(64)
(65)
(66) Locate the. spring guide in hole No. 2 in the
Fig.
C.13
valve
lever pin and the control
stud) with the vernier held parallel to the axis
.
of
the pump
hydraulic
cap-nut, to the torque
head locating bolt, and the advance unit
figures given in 'GENERAL
DATA'. Tighten the advance unit end plug and
to
spring . cap
the torque figures given in
'GENERAL DATA'.
hydraulic head.
Assemble the governor arm,
governor arm spring, then
contr<>l
fit
bracket, and
the assembly to the
pump housing, ensuring that the lower end of the
governor arm engages the stepped face
of
thrust sleeve flange. Fit the keep plate with its open
fit
end towards the shut-off bar, and
new
washers with their pointed tabs towards the
governor arm.
Screw
in·
the two control cover
studs to the torque figure given in 'GENERAL
. DATA' and secure them with the pointed tabs.
Fit the small screw and tab washer to the metering
of
valve end
the control bracket. Tighten the screw
to the torque figure given in 'GENERAL DATA'
it
and lock
with the tab washer.
Assemble the spring retainer, spring, and linkage
washer onto the linkage hook.
end
of
the hook through the governor arm,
Pass the threaded
fit
pivot ball washer and backing washer, and screw
on the linkage nut about three turns.
Press back
the
spring retainer and attach the linkage hook to the metering valve so that the hook
end is turned towards the metering valve.
Press
the
governor arm lightly in the direction
the metering valve and, using a
parallel to the pump axis,.
(see
length
Fig. C.13) to the dimension
'GENERAL DATA'. This adjustment
or
slackening
tightening the linkage hook nut.
v~rnier
gauge held
set the governor link
given
is
made by
governor arm (see Fig. C.l4) and connect the
governor spring to the guide.
the
tab
the
of
in
Governor
1.
Hole No. 1 in the throttle shaft link.
2.
Hole
No.2
(67)
(
\
Insert the plain end
in the control bracket
under the tab
(68)
Using protection cap
rings
to
the shut-off and throttle shafts.
upper
'0'
ring to each shaft, using protection cap
180665,
and pack'
of
rings on each shaft with Shell Alvania
(69)
Press the shut-off
cover, positioning theeccentric.peg close to the
edge
of
the control cover and projecting slightly
from the
(70)
Place a new control cover joint washer in position
joint
face.
on the pump housing, engaging the tabs with the
slots under the keep plate. To ensure sealing, this
joint washer should be soaked in
'C' before assembly.
Fluid
(71)
Connect the free end
No.1
hole in the throttle shaft link
and press the throttle shaft into its bore in the
coVer.
control
Place the control cover in position
on its studs; ensuring that the shut-off peg engages
the
shut~offbar.Pull
as the control cover is lowered onto the pump
housing~
(72)
Fit
.
new sealing washers
and screw on the stud nuts to the torque figure in
'GENERAL DATA'.
(
\
(73)
Place the dust caps on the throttle and shut-off
shafts, fit the throttle arm and shut-off lever
th~ir
shafts and secure them
nuts and washers.
(74) Refit the inspection cover to the side
housing and refit
FUEL SYSTEM (Diesel Models)
Fig.
C.l4
spring
location
in the governor arm.
of
the shut-off bar into the s]ot
and position the shut-off bar
the control cover locking washer.
180654,.
tlu~
shaft
into its bore in the control
of
the shut-off shaft fully home
to
the
quill shaft.
fit
new lower
Fit
a new
groove, between the
No.2
grease.
Shell Calibration
the governor spring
(see
Fig. C.14)
the control cover studs,
in
position with their
of
the pump
'0'
'0'
to
to
Testing and adjusting
(75) The following precautions must
be
observed when
testing the pump:
(a) Ensure that the power-driven test bench is set
to
run
in the direction
of
pump rotation as
indicated on the pump nameplate.
(b) Ensure that the fuel flow
not less than 1,000 c.c./min.
at
the-pump inlet
If
this
flow
cannot
be obtained. a maximum feed pressure
2 lb./sq. in. ('15 kg./cm.
(c) Do
not
run the pump for long periods
2
is
permissible.
)
at
high
speed with low fuel output.
(el)
Do
not
run the pump
for
long periods with the
shut-off control in the closed position.
(e)
Ensure that the throttle and shut-off controls
are in the fully open position except where
stated otherwise.
(76) Mount the pump on the test bench and connect up
the drive.
.
(77) Fit radial connections to the four high-pressure
outlets in the hydraulic head and connect them, by
means
of
high~pressure
test injectors set to open
pipes should be 6 mm.
pipes to . a matched set of
at
175
atmospheres. The
X 2 mm. X
865
mm. (34 in.)
long, and the injectors should have Type BDN.12.
SD.12 nozzles mounted in Type BKB.50.SD.19b
nozzle holders.
'psing
(78)
flexible pipes, preferably
of
the transparent
type, connect the injection pump to the test equipment as 'follows.
(0) Fit transfer pressure'adaptor
of
the hydraulic head locking screw (not the
with the vent· valve),
one
180636
and
connect the
in place
adaptor to the pressure' gauge.
(b)
Fit
the end plate' adjuster '180
690
to
the fuel
inlet on the pump and connect the adjuster,
means
of
a
'T'
coupling,
to
both the fuel
supply and the vacuum gauge.
(c)
Corinect the pump drain
(back~leakage)
connection to the measuring glass inlet, and the
measuring glass drain cock to the test bench
. return connection.
.
(79)
Fit automa:tic advance gauge
advance unit spring cap in
screw.
Set the degree scale to give a zero read-
ing.
180
.place
638 B to
of
the small set
(80) Unscrew the idling and maximum speed stop
to
screws
range
Unscrew the transfer pressure adjuster in the pump
(81)
end plate to the
11
(82)
Fill and prime the injection pump as follows:
(a) Connect the
ensure that the throttle arm has its fun
of
movement.
maximuDl extent, then screw
turns. . .
fuel
feed pipe to the drain con-
it
nection on the pump.
(b)
Open both the vent screws
on
the injection
pump, turn on the gravity feed, and when
oil free
of
air bubbles
flows
from the vent
screw on the hydraulic head, close this vent
screw. When test oil free
of-air bubbles
flows
C.Il
is
of
by
the
in
test
FUEL SYSTEM (Diesel Models)
Fig.
C.15
Checking the automatic advance, using advance gauge
lSG
63S
B
from
the
control cover vent screw, close this
vent screw
(c)
Rotate
repeat the procedure in
(d)
Fit
connections.
(e) Slacken the high-pressure pipe unions
injectors
until oil, free
injector connections. Tighten the high-pressure
pipe unions while the
(83)
Check the oil-tightness
and
seals,
running
following sequence
Test
I-Transfer
Run
oil feed cock
sion registered on the vacuum gauge should
reach
maximum. Do not
exceeding
turned off. After the vacuum test
test oil supply
100 r.p.m. air-vent the pump
vent screw
Test
2-Transfer
Run
pressure gauge reading. This should be
11
Ib.fsq. in.
Test
3-Transfer
Increase the
pressure gauge reading should now
,,66
lb./sq. in. (3·5
Test
4-Advance
With
end plate adjuster
reading
C.12
-also.
the
pump
drive through IS0° and
(b).
the
feed
and
and
return pipes
run
the test bench
of
air
to
bubbles, issues from the
test machine is running.
of
all joint washers, oil
pipe connections, while the
and
when stationary. Then carry out the
of
tests:
pump vacuum
the
pump
at
100 r.p.m.
to
the
'off'
position. The depres-
16
in~
(406 mm.) Hg within 60 seconds
run
tbepump
60 seconds with the test oil supply
and
with the
on
the hydraulic head.
pump pressure
the
pump
at
100
r.p.m.
kg.fcm.
2
minimum.
)
(·S
pump pressure
pump
speed
to
to
4·7 kg.fcm.
setting
the
pump
of
running
21°.
to
at
900 r.p.m. set the
give
an
their respective
at
at
100 r.p.m.
pump
and
turn
the test
for periods
turn
on
pump
running
by
means
of
and
note the
Soo
r.p.m.
be
I
).
advance gauge
the
is
the
at
the
The
50 to
Test
5-Advance
Increase the
advance gauge reading should now
to
41°.
position
pump
speed
to
1,400 r.p.m. The
be
Test6-Back-kakage
Run
the
pump
at
back-leakage
be 5 to
Test
7-Maximumfuel
Run the
delivery for
injectors should
1,000 r.p.m.
in
the measuring glass:
50
C.c.
per
100 shot time cycle.
delivery
pump
at
1,000 r.p.m. The average
200 shots from all
be
2·9±·1
c.c.
and
In
measure the
it
should
four
arriving at
this figure compare the delivery from all
to
ensure
that
injectors
betwe~n
any two does
the difference
not
Before taking a reading allow
settle
in
measuring-glasses for
allow the glasses to drain
a fresh test is made.
turn
incorrect,
remove
pump.
tum
the
Slacken the two drive plate screws
the
periphery
Using tool
off the test oil supply and
cover-plate from the sido
pump
drive until the slot
of
the
top
ISO
656 engaged
the adjusting plate
to
correct the fuel delivery. Movement
adjusting plate
pump
rotation will increase· the output, and
movement
in
in
the opposite direction
for
30 seconds before
If
the fuel delivery is
adjusting plate is visible.
in
the direction necessary
the direction'
decrease output. This adjustment
carried
out
very carefully as the
in
output
exceed ·7 c.c.
the
test oil
15
seconds
of
in
in
the slot,
of
or
normal
must
amount
movement required will be very small. Tighten
the drive plate screws
in
given
adaptor
'GENERAL DATA', using torque
ISG
655
to
the torque figure
A. When tightening the
screws, the torque wrench and spanner must
be
in line (see Fig. C.l7). After making the
Fig.
C.16
Adjusting the maximum fuel setting, using maximum
fuel adjusting probe
lSG
656
3!
test
to
and
the
and
the
tap
the
will
-be
of
(
't
\
FUEL SYSTEM (Diesel Models)
adjustment replace the cover-plate and prime
(S2).
the pump as described in
fuel delivery and,
pump output.
Test
8-Maximum
Decrease
average delivery for
not
less
1·6
c.c.
the
than
fuel
pump
that
if
necessary, re-adjust the
delivery
speed to 150 r.p.m. The
200 shots should
obtained in 'Test 7' minus
Re-check the
check,
now
be
9-Cut-off
Test
Run the
lever in the fully closed position.
delivery for
Test 100Throttleoperation
Run
arm in
off lever
delivery
Test 11:"-Puel delivery check
Run
throttle
open
200 shots.
for
Test 12-Governor setting
Increase
set the throttle
speed stop screw
delivery
exceed
Test
13..;...-Puel
Reduce the
average delivery for
not
less
·4
C.c.
operation
pump
at
200 r.p.m. with
200 shots should
the
pump
at
200 r.p.m. with
the
fully closed position
in
the
open position.
for
200 shots should
the
pump
at
1,250
and
shut-off "controls in their fully
pbsitions~
the
of·8
1·0 c.c. T.ighten
than
Record the average delivery
pump
speed to 1,360 r.p.m.
ann
by
to
give a maximum average
C.c.
per
200
delivery check
pump
speed
200' shots should now be
that
obtained in 'Test 11' minus
the
The
not
exceed
the
and
The
not
exceed ·5 c.c.
r:p'.m. with
means
of
the
maximum
shots;
no
line should
the
stop screw locknut.
to
1',250
r.p.m. The
shut-off
average
·5
C.c.
throttle
the shut-
average
both
the
and
Fig.
Scribing the timing mark
flange, using
14-Timing
Test
After the foregoing tests have been completed,
remove the
mount flange marking gauge
84°,
to
machi,ne
outlet
the drive hub, by means
in
When resistance
marking' gauge steady on
flange
. scribing tool along the guide
If
the pump
Finally, seal the cpver-plate screws
of
sealing pliers
pressur~
on
ISO
653
'V'
the'
direction
and
necessary, delete the old timing
the pllmp, using wire, a lead seal,
toollSG
setting
pump
the
pump
180
A, apply 100 atrnospheres pressure to
in the hydraulic
mark
'flange before
lSG
connections
C.t8
on
the
fuel
infection pump
648 A
from
the
test bench
lSG648
quill, shaft. Using testing
109 A alia
of
normal -pump, rotation.
is
encountered, hold
the
541,
to
timing
head
of
the
marking gauge,
the
pump
pump
making
and
fit
the
the
hydraulic head.
while rotating
by drawing a
on
the new
correct high-
and
A, preset
adaptor
the
mO'unting
the gauge.
mark
from
mark.
on
the side
and
Tightening the drive plate screws, using torque wrench
ISG 537 and torque adaptor
and spanner must be in line as shown
Fig.
C.l7
lSG
655
A. Torque wrench
Refitting
(84)
Crank
B.T.D.C. on its compression stroke.
(85) Insert timing gauge'
pump
splines
(86) Apply a gentle clockwise (as seen
the engine) pressure to the
backlash
engine front plate with the
gauge (see Fig. C.19).
(87)
Fit
pressure pipes, to the engine. Align
mark
securing nuts.
(88)
Connect
·thafboththe
pump
the engine until No. 1 piston is
180
1052
chain wheel hub from
on
the tool with those in
and
line up the timing pointer
the injection pump, complete with high-
with
the
timing pointer ,and tighten the three
the throttle and stop contrdls, ensuring
throttle
have their full range
the
mark
arm
and shut-off lever on
of
at
into
the injection
rear, engaging the
the
driving flange.
from
the
rear
gauge
movement.
to eliminate
cut
inthe'timing
the
pump scribe
9.tl
16°
of
the
the
C.l3
FUEL SYSTEM (Diesel Models)
Fig.
C.19
Checking
(89)
(90) Bleed
(91) Adjust the maximum and idling speeds as described
the
position
pointer,
Connect the mgh-pressure pipes to the injectors,
and
the fuel feed
..
pump
the fuel system as described
in Section C.9.
using
of
the
timing
and
return pipes
injection
gauge
18G
pump
1052
to
in
timing
the injection
Section C.8.
Section C.7
FUEL
INJECTORS
Removing
(1) Disconnect the spill and high pressure pipes from
the injectors.
(2)
Unscrew the securing nuts and remove the injector
clamps.
(3) Withdraw the injectors, using tool
adaptor·18G 284 P, and plug the injector holes in
the cylinder head.
180
284 and
Fig. C.20
Clearing
pintle
Fig.
Cleaning
annular
(a) Clean all carbon from the nozzle valve
(b)
(c) Clear the auxiliary ·spray hole in the nozzle
(12) Ensure
(13)
the
orifice
C.21
the
chamber
outside
Remove all foreign matter from inside the
nozzle body by means
as shown in the illustrations.
with the probing tool. The wire should be
fitted into the tool so
about
end
of
Fit
the nozzle into adaptor
nozzle tip towards the small diameter connection.
Attach the adaptor
and operate the pumping lever several times, thus
clearing the nozzle passages by reverse-flushing.
of
the body with the brass
"*
in. (1·6 mm.).
that
the lapped pressure face
the nozzle
is
perfectly smooth and fiat.
to
testing machine
..
wire brush.
of
the shaped scrapers
that
it
protrudes only
on
180
109
and
the
~e
upper
E with the
180
109
A
/
\
Dismantling
(4)
Mount
(5) Remove the injector cap-nut and
washer.
(6) Slacken the locknut, unscrew the spring cap-nut,
(7) Unscrew the nozzle nut, using spanner 18G 210,
Inspection
(8)
(9)
(10)
(11)
the injector
and
remove the copper joint washer, spring, and
spindle.
and remove the nozzle body and valve assembly.
Wash all the components thoroughly
Calibration Fluid
Examine the spring for signs
or
fraeture, and ensure· that the ends·
square. Check the spindle for straightness.
Ensure that the face
contacts the nozzle is perfectly smooth
Using cleaning kit
nozzle body and valve:
in
dismantling fixture
'C'.
of
weakness, rusting,
of
the nozzle holder which
180487,
thoroughly· clean the
C.l4
the
copper joint
in
clean Shell
are
and fiat.
180388.
perfectly
Withdrawing
an
adaptor
Fig.
injector,
C.22
using
18G
tool
284 P
18G
.
:
..
.;;.
284
-=:=
I
A6S9S
and
FUEL SYSTEM (Diesel Models)
Fig. C.23
Cleaning the
nozzle
seat
Fig. C.24
Clearing the auxi-
[iary spray hole
(14)
In
~ses.
where the ca.rbon deposit is particularly
it
hard,
in a caustic solution:
(a)
(b) Boil the nozzle bodies
(c) Wash the nozzles' in
(15) Examine the valve seat in the nozzle body through
a nozzle microscope. The seat should
can besoftened by boiling the nozzle bodies
Dissolve 2 oz.
1 pint (·57 litre)
(14'2 gm.)
minimum
hours.
evaporate, because a concentration
soda above
of
Do
the nozzle bore
(56·7
gm.)
qf
caustic soda in
of
water
and
add
oran
ordinary washing detergent.
in
the
liquid
of
1 hour and··
not
aIlow
not
too
much . water
mote
of
15
per cent. may cause roughness
and
seat which would
t oz.
for
than
caustic
Ii
to
make the nozzle unserviceable.
running
immerse them iri·;a de-watering oil such
water
and
as
Shell Ensis 254. Remove the surplus oil by
or
draining
the
carbon as described
with compressed air, then remove
in
(11) and (13).
not
be
II
~C!-=----2
--
3
·4
____
1'11111
--5
~----6
9
a
Fig. C.26
Section through a
1.
Injectpr cap-nut.
2.
Joint
3.
4.
S.
6.
washer.
Locknut.
Joint
washer.
Nozzle holder.
Nozzle nut.
stepped, and should
pitting.
(16)
Examine the conical surface which forms the seat
of
the
nozzle valve through a nozzle microscope.
The most critical
it
where
This angle should
no
with
anywhere
ance as
(17)
If
all
the
forms an angle with the. parallel stem.
rounding
on
shown in Fig. C.25.
components appear serviceable, assemble
part
be
or
its diameter. Check the pintle clear-
the injector as described
adjust
and
test the injector as described in (34)
(43). Provided the wear is not excessive,
serviceable nozzle body
ditioned
as described in
on
a nozzle grinding
(18)
to
~-----7
fuel
injector
..
Nozzle body.
7
8:
Nozzle
9.
10.
11. Washer.
2.
t
be
free from scores
of
the··
conical surface is
sharp·
and
vaJve.
Spindle.
Spring.
Spring cap-nut.
and
. clearly defined,
wear breaking the knife-edge
in
(32) and (33). Then
to
an
un-
and
valve can
and
(31).
be
recon-
lapping machine
/
\..
. Fig.
Testing the pintle
not
tilt
at
and
orifice
a greater angle than 200 from
centre-line
C.
25
for
wear. The valve must
the body
Reconditioning
(18)
Select a nozzle lap from those· supplied with the
machine. The bore diameter varies slightly from
one nozzle
fit
.
the
valve
to
another,
and
the.
lap chosen should
nozzle in the same manner as
to
ensure concentricity
of
the. valve seat
nozzle bore after lapping.
the
nozzle
and
C.l5
FUEL SYSTEM (Diesel Models)
Fig.
C.27
Reversellushing
machine
tioned
(19)
(20)
(21) Apply a small quantity
(22)
(23) After
(24) Reface
(25) When
18G
adaptor
Mount
the
lap is pointed remove the tip to avoid damaging
the pintle hole. Grind the conical
nozzle
backwards
feeding
surface is entirely cleaned up. Inspect the
the nozzle microscope
rough,
Fit
the
and
apply a coating
of
the
lap
of
the
extend
Start
the machine
over the rotating lap. Oscillate the nozzle
lap in very
per
minute, engaging the nozzle seat with
at
each stroke. Apply only light pressure
nozzle
in
contact with the lap
a time.
30 seconds lapping time
the
clean
There will
in
contact
stages
have a
indicate
t minutes
1
seconds' lapping with a freshly ground lap, use fine
lapping
surface. Lapping should be kept
because excessive lapping will allow the nozzle valve
C.16
an
injector
109 A
and
with
a nozzle
the
lap
in the lathe
body
seat angle
and
forwards across the grinding-wheel,
in
the
lap very gradually until its conical
dress
the
grinding wheel and regrind
lap
into the lapping chuck
for
lubrication.
lap,
taking care
to
the
parallel stem
and
short
strokes
and
do
not
allow
lap,
and
be a mat
with the nozzle seat,
of
lapping this surface may
bright
circumferential ring. These markings
the
extent
of
the
lap
as described
of
lapping time.
the
seat appears satisfactory after a few
paste
to finish the seat off
lzozz1e
adaptor
of
examine the conical
surface where the
the wear
18G
in
position
of
the machine
end
of
59°. Pass the
and,
if
the
ground
tallow
to
the guide surface
of
lapping paste
that
the
of
the lap.
carefully slide the nozzle
at a rate
the
for
of
nozzle seat
more
than
withdraw
on
in
with
testing
109
E.
A sec-
is
shown
inset
and
to
the correct
lap
slowly
lap
under
surface is
the
lap.
of
the machine
to
the tip
paste .does
20
to
5 seconds
lap
and
in
be
the nozzle seat.
(19) after every
to a smooth
to
a minimum
not
on
the
30 strokes
the
lap
to
the
to
remain
the nozzle,
lap
tip.
has
been
the
early
narrow
or
mat
if
at
Fig.
C.28
Correct
to
seat
hole and the nozzle will· be useless.
(26) Reverse-flush the nozzle
with compressed air,
under
(27)
Make
correctly and adjust the
machine
Mount
(28)
reface the conical seat. Be particularly careful not
to damage the pintle
it
to
touch the grinding-wheel,
absolute minimum
just
enough to change
otherwise the nozzle valve
increased. As a guide, there should
hiss from the grinding-wheel when refacing the
valve. Watch the refacing procedure through a
magnifying-glass, focusing
seat face away from
nozzle and
in a lower position
the nozzle microscope;
sure
that
to
60°
to
the valve
valve
than
as
described
and
make
the
gI:inding-wheel is dressed
ref
suit the nozZle valve.
in
the
lathe
end
of
of
material from
the
lift
on
the
grinding-wheel.
seat
angles
the auxiliary spray
in
a final inspection
acing angle
of
the
machine and
the valve by. allowing
and
remove only the
the
colour
of
(needle lift)
be
no
the
surface
,;,
.
',-
":-;-:-'~-::'~_/'
~i
Fig.
C.29
Lapping a nozzle
circumferential
in
the
early
lap
ring
stages
upon
seat.
The·arrow
which
of
lapping.
completion
indicates
may be present
A.
view
of
is
shown
inset
the
on
the
(13), dry it
of
the
valve seat;
the seat,
will
be
sparks
or
of
the
i:
Ii
/I!
1;
····
..
-=---:..=..=..~17·7~
bright
the
lap
seat
and
(
FUEL SYSTEM (Diesel Models)
c
(29) After refacjng, inspect
microscope.
(30) If, due
fitting valve should
its own weight when
(31)
DATA'.
joint
joint
Reassembling
(32)
nozzle body while
(33)
Fit
and
the
injector as described
to
slight distortion.or deposits
surface, the valve is found
nozzle body,
guide surface
lapping chuck
valve, using fine lapping paste
collets supplied with
After
attention
seats, assemble
needle lift against
face
plate. Be careful
face must remain
the
nozzle axis.
Wash
all
Fluid
the
in
the
reverse the procedure in (5) to (7), tightening
nozzle
'GENERAL
it
can
of
the valve.
and
to
the
To correct excessive needle lift, lap the
of
the nozzle
th~
components in clean Shell Calibration
'C',
and
assemble the nozzle valve to the
oil.
nozzle holder
nut
DATA'. Then adjust
Adjusting and testing
Back-leakage test
(34)
Connect the injector
with
the
nozzle facing away from the
open
the check valve
(35) Operate
pressure at which injection occurs.
(36)
With
spring cap-nut
the
pumping
the injector cap-nut removed adjust the
to
170 atmospheres.
Testing
an
18G
injector
109
for
A and adaptor
the
valve under
to
be
be
corrected
Mount
lap
the guide surface
the
machine. A correctly
just
slideiIitothe
lubricat~d
either the noZzle
valve
the
body
not
to
tilt the nozzle because the
true
both
components
to
dismantling fixture
to
the
in
(34)
to
testing machine 18G
to
the
give
Fig. C.30
Jpray, using testing machine
with fuel oil.
and
body
figure
on
and
torque figure given in
to
(43).
pressure gauge.
lever and observe the
an
injection pressure
18G
the
on
its guide
a tight fit in
by
lapping
the
valve in
and
one
body
body
and
check the
in
'GENERAL
a surface lapping
at
right angles to
are
immersed
and
operator
10~
B
nozzle
the
the
the
of
the
of
the
under
or
valve
180
388
test the
109
and
of
Reassembling a
spanner
(37) Operate
registers
time the pressure drop from
spheres.
should be between 6 and 40 seconds.
Seat
tightness test
(38) Adjust
pressure
and depress the pumping lever until a pressure
90
A
atmospheres is obtained. Maintain this pressure
for
dryness.
pressure for 60
blotting
of
the wet
tin.
Adjustment and spray test
(39) Adjust
pressure
and re-check the injection pressure.
cap-nut
(40) Connect
in place
opening pressure to
(41) Connect
check valve
(42) Operate
minute
be well formed
A slight central core may be disregarded.
(43) Increase
a minute
be well atomized
distortion. A slight central core may be disregarded.
Fig.
C.31
fuel
injector, using fixture
18G
210, and torque wrench
the
pumping lever until the pressure gauge
160 atmospheres. Release the lever
150
For
a nozzle in good condition this
the
spring cap-nut
of
100
atmospheres.
10
seconds and examine the nozzle
If
in
doubt;
maintain the
second"s
paper
below the nozzle tip; the diameter
spot
on
the
(13
mm.).
the
spring cap-nut
of
135 atmospheres, tighten the locknut,
and
joint
washer.
adaptor
of
18G
the injector
220
the
injector
to
the
pumping lever
and
observe
the
operating speed
and
to
the pressure gauge.
the
and
free from splits
observe the main spray. This
and
to
give
Dry
while holding a piece
paper
should
to
give
109
B to the testing machine
and
adjust the
atmospheres.
the
adaptor
at
about
auxiliary spray. This
to
about
free from large splits
18G
18G
372
to
100
an
injection
the nozzle
tip
90
atmospheres
not
an
injection
Fit
the injector
adaptor
and
close
60 strokes a
should
or
distortions.
140
strokes
should
388,
and
atmo-
time
tip
of
for
of
exceed
the
or
C.17
FUEL
Refitting
(44) Reverse the procedure in
following:
(a)
Renew both sealing washers on each injector.
One washer passes over the nozzle and seals
between the nozzle nut and the heat shield
flange. The second washer (atomizer seal
washer) seals between the nozzle face and the
bottom
be fitted with its two edges downwards.
(b) Tighten the injector clamp nuts
figure given in 'GENERAL DATA'.
(c) Bleed the fuel system as described in Section
of
the heat shield; this washer should
C.S.
(1) to (3), noting the
SYSTEM (Diesel Models)
(1)
Ensure
run position and remove the sealing cap from the
maximum speed stop screw.
(2) Run the engine until
running temperature.
(3)
Slacken the locknut and adjust the maximum speed
stop screw
speed
maximum governed speed under load
r.p.m. Tighten the locknut.
to
the
torque
(4)
Fit
seal, using sealing pliers 18G 541.
(5)
Adjust
of
that
the stop control is fully home in the
it
bas attained its normal
to
set the engine maximum light running
at
2,750 r.p.m! This will give the engine a
the sealing cap and seal
the
idling stop screw
600 r.p.m.
and
tighten the locknut.
it
with wire and a lead
to
give
an
of
2,500
idling speed
Section C.9
MAXIMUM
Before making either
the engine
-AND
air
cleaner is correctly serviced
IDLING SPEED ADJUSTMENT
of
these adjustments -ensure that
and
fitted.
NOTE.-Adjustment
alter the pump timing in relation
mounting flange; therefore, after adjustment of the maxi-
mum
fuel setting, the mounting flange
marked as described in Section C.6 (83), Test 14.
of the maximum
to
the mark
fuel
on
.should
setting
the pump
be
will
re-
I
\
"
C.18
SAO
TRANSMISSION
DESCRIPTION
OPERATION
TROUBLE
SHOOTING
DISASSEMBLY
REMOVAL
GEAR
REMOVAL
OF
HOUSING
OF
ENGINE.
REMOVAL
OF
HOUSING
DISASSEMBLY
INSPECTION
ASSEMBL
YOF
OF
SAO
REDUCTION
IF
" . "
REVERS.E
GEAR
OF
GEAR
TRANSMISSION
GEAR
INSTALLED
GEAR·HOUSING
CASE
GEAR
ASSEMBLY
CASE
CASE
ASSEMBLY
FROM
FROM
ASSEMBLY
REV'ERSE
REVERSE
FROM
GEAR
Page
46
46
No.
46
46
48
51 .
51
52
53
53
ASSEMBLY
OF
HOUSING
ASSEMBLE
ASSEMBLY
'GEAR
TRANSl\llSSION
OF
HOUSING
ADJUSTMENTS'
REDUCTION
UNIT
REVERSE
GEAR
REDUCTION
ASSEMBLY
TO
ENGINE
GEAR
CASE
IN
ASSEMBLY
REVERSE
TO
GEAR
55
56
REVERSE
56
57
59
(
45
DESCRIPTION
SAO TRANSMISSION
The
multiple
tained
OPERATION
On
together
pressure
propeller
The
gear
clamped
reverse
peller
With
band
stationary.
It
moving
It
ably
and
Westerbeke
disc
and
are
the
forward
as a solid
produced
shaft
reverse
case
when
motion
shaft
the
shift
are
un.clamped
is
desirable
the
is
recommended
in
the
of
the
boat.
which
clutch
independent
drive..
turns
drive
contains
the
is
opposite
lever
to
boat
800
in
RPM
Paragon
and a planetary
coupling.
when
in
is
obtained
shift
then
to
in
and
start
either
that
range
manually
of
the
reverse
the
shift
the
same
the
lever
obtained
the
engine
the
neutral
the
the
engine
direction.
the
shifting
or
the
planet
engine
gear
The
multiple
lever
direction
by
clamping
planetary
is
moved
by
driving
rotation.
position
gears
with
be
lower
to
operated
reverse
lubrication
case
disc
is
moved
as
the
reverse
and
through
the
run
the
transmission
done
at
prolong
reverse
gear
system.
and
clutch
to
the
the
engine.
reverse
gear
held
multiple
idle
and
speeds
the
life
gear
train.
multiple
is
locked
forward
band
train.
in'
the
the
gears
disc
the
in
below
of
the
units
The
units
disc
clutch
or
position.
around
The
reverse
thus
clutch
propeller
neutral
·1000
RPM
engine
consist
are
self
are
clan;tped
Thus
the
reverse
position.
turning
and
the
shaft
..
thus
and
..
transmission
of
(:on-
loc.ked
by
the
the
reverse
band
the
reverse
remains
avoiding
prefer-
is
The
pro-
a
TROUBLE
The
trouble
suggestions
what
sions
as
DISASSEMBLY
As
manship
the
should
indicated
in
1.
2.
3.
4.
5.
6.
7.
NOTE:
oil
to avoid fouling the
SHOOTING
trouble
any
servicing
apply.
Use
Use
Never
Never
Use
screws.
Replace
Work
nicks
Remove
shooting
carried
be
from
only
only
only
charts
out
may
carefully
OF
Some.
use a hammer
press
gaskets
on a clean
and
be.
the
trouble
SAO TRANSMISSION
operation,
of
clean
clean
properly
scratches.
fluid
oil
a
ball
the reverse
prior
Also
read
these
for
and
bench
and
below
shooting
in
to
bearing
sized
"0"
bilges.
and
on
the
next
to
any
disassembly
..
the
exploded
and
understood
charts
cleanliness
rules
any
lubrication
are
cleaning
drive
and
ball
so
wrenches
rings
protect
as
when
that
with
views
so
that
may
is a must
follows:
or
washing
pressing
bearings
the
force
in
removing
new
material.
gear
page
to
determine
be
in
teeth
shoUld
and
the
any
or
carried
and
all
of
parts.
parts
place.
is
carried
or
and
be
studied
as
well
as
accompanying
all
of
the
service
out
properly.
rules
together.
securing
oil
for
through
nuts'
seal
surfaces
good
and
pOGsible
discus-
work
work-
the
balls.
and
cap-
from
the
reduction gear as a complete unit before removing the (