TM 5-3895-346-14
CRANKSHAFT PULLEY
ENGINE OVERHAUL
CRANKSHAFT PULLEY
The crankshaft pulley is secured to the front end of the crankshaft by a special washer and a bolt. The engine
application determines the type of crankshaft pulley to be used.
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.
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 24420 as shown in Fig. 1. Then force the pulley off the crankshaft by turning the puller center screw in.
NOTE
On pulleys that do not incorporate two tapped holes in the front face of the pulley,
use a two-arm, universal-type puller.
4.
Remove the outer and inner cones, if used.
Figure 1. Removing Crankshaft Pulley Using Puller J 24420
Install Crankshaft Pulley
1.
Lubricate the end of the crank- shaft with engine oil to facilitate pulley installation.
2.
Slide the inner cone (Fig. 3), if used, on the crankshaft.
3.
Start the pulley straight on the end of the crankshaft.
4.
Install a rigid-type pulley on an in-line or 6V engine with installer J 7773 as shown in Fig. 2. Then
remove the installer.
5.
Slide the outer cone (Fig. 3), if used, on the crankshaft.
6.
Place the washer on the crankshaft bolt and thread the bolt into the front end of the crankshaft.
7.
On certain 4-53 engines, a splined crankshaft pulley is used. Place a drive flange washer over the
splined end of the crankshaft. Align the splines and tap the pulley on the crankshaft with a plastic hammer.
Place another drive flange washer on the bolt and thread it into the end of the crankshaft. Tighten the 3/4-16
bolt to 290-300 lb ft (393-407 Nm) torque.
8.
On in-line engines with cone mounted pulleys NOT stamped with the letter A, tighten the 3/4-16
bolt to 290-300 lb ft (393-407 Nm) torque.
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