1.7.7 Accessory Drive
DETROIT DIESEL 53
CAUTION: When replacing the drive
hub on the accessory shaft, drive the
hub squarely on the shaft (refer to
a. Place a new gasket on the flange and align the
holes in the gasket with the bolt holes in the
flange. Use a light coat of grease to retain the
gasket in position.
b. Place the accessory in position against the
flywheel housing, rotating it, if necessary, to
align the teeth of the accessory hub with those
in the drive coupling. Secure the accessory to
the flywheel housing with five bolts and lock
Install Accessory Drive
Remove old gasket material from the flywheel
housing. Use care so that no gasket material falls into
the gear train compartment.
Insert a clean, lintless cloth in the flywheel
housing opening to prevent bolts from accidentally
falling in the gear train. Align the bolt holes in the
accessory drive plate and spacer (if used), or the
accessory drive hub, with the tapped holes in the
camshaft gear. Then secure the plate and spacer, or
drive hub, with four bolts( Remove the cloth from the
flywheel housing opening.
If a gear driven accessory is used as shown in
Figs. 2. and 3., install the accessory drive coupling,
1972 General Motors Corp.