DETROIT DIESEL 53
1.3.7
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-line engine, install the pulley retaining bolt and puller J 4794-01 as
shown in Fig. 1. Then force the pulley off the-crankshaft by turning the puller center screw in.
On pulleys that do not incorporate two tapped holes in the front face of the pulley, use a two arm universal type puller.
Fig. 1 - Removing Crankshaft Pulley Using
Fig. 2 - Installing Crankshaft Pulley Using Installer J 7773
Puller J 4794-01
4.
Remove the outer and inner cones, if used.
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 crankshaft.
August, 1972
SEC. 1.3.7
Page 1
