1.3.7
DETROIT DIESEL 53
CRANKSHAFT PULLEY
The crankshaft pulley is secured to the front end of
the crankshaft by a special washer and a bolt.
Remove Crankshaft Pulley
1. Remove the belts from the crankshaft pulley
2. Remove the crankshaft pulley retaining bolt and
special washer.
3. If a rigid type pulley is being removed from an In-
engine, install the pulley retaining bolt and
line
puller J 4794-01 as shown in Fig. 1. Then force the
Fig. 2 Installing Crankshaft Pulley Using
pulley off the crankshaft by turning the puller center
Installer J 7773
screw in.
On pulleys that do not incorporate two tapped holes in
4. Remove the outer and inner cones, if used.
the front face of the pulley, use a two arm universal
type puller.
Inspection
The appearance of the rubber bushing does not
determine the condition of a rubber mounted
crankshaft pulley. Check for failure of the rubber
bushing by locking the crankshaft and applying
pressure to the crankshaft pulley. If the pulley cannot
be rotated. the bushing is in satisfactory condition. If
necessary, replace the rubber bushing.
Install Crankshaft Pulley
1. Lubricate the end of the crankshaft to facilitate
pulley installation.
2. Slide the inner cone (Fig. 3). if used. on the
crankshaft.
4. Start the pulley straight on the end of the
Fig. 1 - Removing Crankshaft Pulley Using
crankshaft.
Puller J 4794-01
SEC. 1.3.7 Page 1
August. 1972
