TM 5-3810-300-24&P-3
ACCESSORY DRIVE 1.7.7
lock washers if used) and remove the accessory drive
plate, and spacer if used.
To remove the drive assembly for a belt driven type
accessory, the following procedure may be used:
1. Remove any external piping or connections to the
accessory.
2. Loosen the accessory and slide it toward the drive
pulley. Then, remove the drive belt and accessory.
retaining the pulley on the drive shaft.
4. Use a suitable gear puller, to remove the pulley from
the drive shaft. Remove the Woodruff key.
5. Remove five bolts and lock washers which attach the
drive retainer assembly to the flywheel housing.
Remove the retainer assembly.
Fig. 6 - Location of Oil Seal Spacer
6. Remove the accessory drive shaft, drive plate and
to reposition the seal, thus providing a new sealing
similar to that outlined in Steps 3 and 4 under
surface for the lip of the seal (Fig. 6).
removal of the direct gear driven type accessory
drive.
Install Accessory Drive
7. Remove the snap ring and ball bearing from the
accessory drive shaft retainer assembly shown in
1. Remove old gasket material from flywheel housing.
Fig. 5.
Use care so that no gasket material falls into gear
train compartment.
Inspection
2. Insert clean, lintless cloth in flywheel housing
Clean accessory drive parts with clean fuel oil and dry
opening to prevent bolts from accidentally falling in
them with compressed air. Examine the gear teeth of
the gear train. Align bolt holes in accessory drive
the drive shaft, drive coupling, drive hub or drive plate for
plate, and spacer if used or accessory drive hub,
wear. If worn excessively, re-place with new parts.
with tapped holes in cam-shaft or balance shaft gear.
Then, secure the plate and spacer, or drive hub, with
Inspect the ball bearing used to support the accessory
four bolts (and lock washers or lock wire if used).
drive shaft shown in Fig. 5. Shielded bearings must not
be washed; dirt may be washed in and the cleaning fluid
3. If a gear driven accessory is used as shown in Figs.
could not-be entirely removed from the bearing. Wipe
2 and 3, install the accessory drive hub or drive
the outside of the bearing clean; then hold the inner race
coupling squarely on the accessory shaft, then:
and revolve the outer race slowly by hand. If bearing is
worn or does not roll freely, replace the bearing.
a. Place a new gasket on the flange and align the
holes in the gasket with the bolt holes in the
Check oil seals for wear or damage.
Replace if
flange. Apply a light coat of grease to retain the
necessary.
gasket in position.
Inspect accessory drive hub, shown in Fig. 4, for
b. Place the accessory in position against the
grooving at area of contact with lip of oil seal. If hub is
flywheel housing, rotating it, if necessary, to align
grooved to a point where the effectiveness of oil seal is
the teeth of the drive plate with.
lost, a ring type oil seal spacer is available which serves
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