Paragraphs 141-142
ALLIS-CHALMERS
DIESEL ENGINE AND COMPONENTS
Fig.
AC54—View showing left side of WD45 Diesel engine.
The engine is fitted with a Bosch PSB iniection pump and
pintle noizies.
Fig.
AC54A—View showing right side of engine. Removai of
Nos.
2, 3, 4 or 5 energy ceiis requires renfiovoi of the air
intalce manifold.
R&R ENGINE WITH CLUTCH
141.
To remove the engine and
clutch as a unit, first drain the cooling
system, and if engine is to be disas-
sembled, drain the oil pan. Remove
the hood and radiator. Disconnect the
fuel line running from primary filter
to transfer pump. Disconnect the re-
turn line from injection pump and
leak off line to top of fuel tank. Dis-
connect throttle rod, generator wires
and temperature indicating bulb. Re-
move universal joint retaining pin
from steering worm shaft and slide
steering shaft and universal joint rear-
ward.
141A. Support engine in a suitable
hoist as shown in Fig. AC54B, and un-
bolt side channels from front support.
Slide front support forward until front
cap screws in side channels can be
reinstalled in rear holes of front sup-
port. If tractor has an adj ustable
front axle, the nut and lock washer
must be removed from the radius rod
pivot bolt. If desired for convenience,
the radius rod support may be re-
moved by removing the three attach-
ing bolts,
Unbolt and remove the engine front
support from side channels.
141B.
Remove cap screws retain-
ing engine to clutch housing and slide
engine forward until free of clutch
housing dowel pins and clutch shaft.
Raise front of engine and at the same
time slide the engine forward until
the clutch clears the clutch housing.
Lift engine from tractor.
CYLINDER HEAD
142.
To remove the cylinder head,
first drain cooling system and remove
hood. Remove the oil line which runs
from the oil gallery to the cylinder
head. Disconnect heat indicator bulb
from water outlet casting on top of
head and disconnect water pump from
front of head. Disconnect by-pass hose
from thermostat housing, remove cap
screw retaining the water inlet pipe
to cylinder head and lay by-pass line
and inlet pipe assembly forward and
out of the way. Remove thermostat
housing from water outlet casting, and
water outlet casting from head. Dis-
connect heater cable from manifold
and remove the manifold air inlet
tube.
Disconnect the diesel fuel sys-
tem supply and return lines, discon-
nect the intermediate and secondary
(or final) fuel filters mounting brac-
ket and lay filters and bracket over
and out of the way. Disconnect noz-
zle lines from injection pump and noz-
zles.
Remove valve cover, rocker arms
assembly and push rods. Remove the
cylinder head retaining stud nuts and
lift cylinder head from tractor. If de-
sired for convenience, the intake and
exhaust manifolds may be removed.
If Nos. 2, 3, 4 or 5 energy cells are to
be removed it will be necessary to re-
move the manifolds.
When installing the cylinder head,
tighten the stud nuts progressively,
from center outward and to a torque
value of 95-100 Ft.-Lbs.
Fig.
AC54B—Tractor with
hood, radiotor and engine
front cover (timing cover)
removed.
36
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