7.3 Starting Motor
DETROIT DIESEL 53
Fig. 2. - Cross-sectional View of Motor with Sprag Intermediate Duty Clutch
5 long) and six neoprene plugs from the unused holes if
High-Output Starting Motor
a 12 hole starter mounting flange is used.
A high-output 12volt starting motor. with a Sprag
Turn the nose housing to the required position.
overrunning clutch type drive, is provided for certain
vehicle applications which require the equivalent of
NOTE: The solenoid must never be located
24volts for starting the engine and 12volts for lighting
below the centerline of the starter or dust, oil,
and operation of electrical accessories. The same total
battery capacity recommended for use with a 24volt
moisture and foreign material can collect and
starter (two 205 ampere-hour batteries) must be retained
cause solenoid failures.
and connected in parallel for the high-output 12volt
Install the six socket head screws, with the short
screw in the shallow hole nearest the solenoid. Install
Lubrication of Starting Motors
six neoprene plugs in the unused holes if a 12 hole
starter mounting flange is used.
The starting motor bearings (bushings) are lubricated by
oil saturated wicks which project through each
Tighten the screws to 13-17 Ib-ft torque.
Fig. 3. - Cross-sectional View of Motor with Sprag Heavy Duty Clutch
1971 General Motors Corp.