TM 5-3820-233-35/2
Figure 24-2 (1)-Continued
of the flywheel and is the mating gear for the starting
motor. The flywheel maintains even crankshaft speed
Caution:
and with the engine starter, provides a method of
Overheating to temperature above
400o F. will soften the gear.
starting the engine.
b. Removal
(3) Inspect flywheel housing for cracks and
other damage. Replace a damaged flywheel housing.
(1) Remove the power unit (para 23).
(2) Remove the muffler and air cleaner
Note.
(Operator's Manual).
(3) Remove the hoods, side panels, and tie
Remove all old gasket material from
rods (Operator's Manual).
the flywheel housing and end plate
(4) Remove the starter (Operator's Manual).
before installing a new gasket and
(5) Remove the oil pan (para 44).
the housing.
(6)
Remove the power takeoff assembly
e. Reassembly. Reassemble the flywheel and
(7) Refer to figure 27-1 and remove the
flywheel housing in the reverse of the numerical
removal.
sequence as illustrated on figure 27-3.
(8)
Remove
air
cleaner
brackets,
f. Installation
tachometer, overspeed governor, throttle control and
(1) Refer to figure 27-2 and install the
linkage from the flywheel housing. (Operator's Manual.)
flywheel housing. Follow the bolt tightening illustrations,
(9) Remove the two bolts securing the
engine lifter bracket to the cylinder head.
(2) Refer to figure 27-1 and install the
(10) Refer to figure 27-2 and remove the
flywheel. Refer to para 4 for torque data.
flywheel housing.
(3)
Use indicator and check the flywheel
c. Disassembly.
Disassemble the flywheel
housing concentricity as shown on figure 27-6.
housing in the numerical sequence as illustration on
(a) Adjust each dial indicator to read zero at the
figure 27-3.
twelve o'clock position. Then rotate the crankshaft one
d. Cleaning, Inspection, and Repair.
full revolution, taking readings at 45 intervals (8
(1) Clean all parts with an approved cleaning
readings each of the flywheel housing bore and bolting
solvent and dry thoroughly.
flange face). Stop and remove the wrench or cranking
(2) Inspect ring gear for broken or cracked
bar before recording each reading to ensure. Accuracy.
teeth. If replacement is necessary, remove gear from
The maximum total indicator reading must not exceed
flywheel with a blunt chisel. Install a new ring gear by
.013 inch for either the bore or face.
heating to expand it and pressing it onto the flywheel.
(4) Remove the bolts holding the lifter
bracket to the flywheel housing. Install a new gasket to
the bracket, then alternately tighten the bracket to the
flywheel housing and bracket to cylinder head bolts, thus
drawing the
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