DETROIT DIESEL 53
Accessory Drive 1.7.7
d. Turn the retainer over again, bearing side up, and press the accessory drive shaft in the bearing until
the shoulder on the shaft contacts the bearing.
e. Apply a light coat of grease to the mounting flange of the retainer and place a new gasket in position
against the flange. Align the holes in the gasket with the bolt holes in the flange.
f.
Place the retainer and drive shaft assembly against the flywheel housing, rotating the shaft slightly, if
necessary, to permit the teeth of the drive shaft to mesh with the teeth in the drive plate. Secure the
retainer assembly to the flywheel housing with five bolts and lock washers.
g. On current accessory drives, install the spacer over the shaft and against the bearing.
h. Install the Woodruff key in the drive shaft. Start the pulley straight on the shaft, aligning the keyway in
the pulley with the key on the shaft. Use a soft hammer to tap the pulley on the shaft.
i.
Thread the pulley retaining nut on the end of the drive shaft and draw it up tight.
j.
Install the accessory on the engine and slip the drive belt over the pulleys. Position the accessory to
provide the proper tension on the belt and secure it in place.
NOTE: When installing or adjusting an accessory drive belt(s), be sure the
bolt at the accessory adjusting pivot point is properly tightened, as well as
the bolt in the adjusting slot.
5. Assemble the accessory drive shown in Fig. 5 as follows:
a. Press a new oil seal in the oil seal retainer, if the seal was removed.
b. Coat the mounting flange of the retainer lightly with grease and place a new gasket against the flange.
Align the holes in the gasket with the bolt holes in the flange.
c.
With the accessory drive hub in place (see Step 2 above), slip the retainer and oil seal assembly over
the end of the shaft. Use care not to damage the oil seal. Secure the retainer to the flywheel housing
with five bolts and lock washers.
d. Install the Woodruff key. Start the pulley straight on the shaft, aligning the keyway in the pulley with
the key on the shaft. Use a soft hammer to tap the pulley on the shaft.
e. Install the washers and the pulley retaining bolt and draw the bolt up tight.
f.
Install the accessory on the engine and slip the drive belt over the pulleys. Position the accessory to
provide the proper tension on the belt and secure it in place.
NOTE: When installing or adjusting an accessory drive belt, be sure the
bolt at the accessory adjusting pivot point is properly tightened, as well as
the bolt in the adjusting slot.
July, 1972 SEC. 1.7.7 Page 5
