1.7.7 Accessory Drive
DETROIT DIESEL 53
Fig. 3. - Hydraulic Pump Drive
hub, coupling and drive plate (Fig.) or a spacer, drive
Remove Accessory Drive
plate, drive coupling and hub (Fig. 3.).
Remove the direct gear driven type accessory drive ai
The drive plate and spacer. when used, are bolted to
the camshaft 'gear. The accessory is bolted to the
flywheel housing and driven by a drive hub keyed to the
Remove any external piping or connections to
accessory shaft and splined to the coupling which is
splined to the drive plate attached to the camshaft or
balance shaft gear
Remove the five bolts and lock washers
attaching the accessory to the flywheel housing. Pull
the accessory straight out from the flywheel housing
Remove the drive coupling.
Remove the drive hub from the accessory shaft.
`Place a clean, lintless cloth in the flywheel
housing opening, underneath the accessory drive plate
to prevent bolts from accidentally falling into the gear
train. Remove the lock wires, if used. Then remove the
four bolts (and lock washers, if used) and remove the
accessory, the drive plate and the spacer, if used.
1972 General Motors Corp.