Inspection

HUB, SPINDLE & BEARINGS

1. Clean components with suitable solvent and blow dry with compressed air.

Fig. 11 Checking spindle for wear:

2. Inspect spindle for wear and damage and measure spindle bearing seating area diameter. Diameter should be 1.7805 to 1.7812 inch.
3. Inspect bearings for damage excessive wear, overheating and scoring, and replace as needed.
4. Check fit of bearing outer races in hub. If races are loose, hub should be replaced.

Fig. 8 Hub & wheel bearing assembly exploded view. Shown w/manual locking hub:

MANUAL LOCKING HUB

1. Inspect hub ring, inner hub and hub body, and the clutch. If components are damaged or worn, assembly should be replaced.
2. Inspect tension spring and compression spring, and replace if collapsed or deteriorated.
3. Check operation of control handle and replace as needed.

Fig. 9 Automatic (free wheeling) locking hub:

AUTOMATIC LOCKING HUB

DISASSEMBLY

1. Press in on brake B, then remove housing C-ring.
2. Remove brake B, brake B and brake spring from housing, then remove housing snap ring.
3. Mount assembly in press, lightly compress drive gear, then remove retainer B C-ring, noting the following:
a. Place protective cloth under cover mating surface.
b. Because return spring is approximately 1.57 inches long, ensure press stroke is more than 1.57 inches.
c. Do not apply more than 441 lbs. pressure to drive gear.
d. After removing C-ring, slowly reduce press force until return spring relaxes completely.
4. Remove retainer B, return spring, slide gear assembly and drive gear assembly from housing.
5. Remove and discard drive gear snap ring.
6. Press in on slide gear cam and remove slide gear C-ring.

INSPECTION

1. Check slide and drive gear splines for damage.
2. Check cam portion of retainer A for wear or damage.
3. Check cam for wear and damage.
4. Check slide gear and housing tooth surfaces for wear and damage.
5. Check retainer B and housing contact surfaces for wear and damage.
6. Check brake wear as follows:

Fig. 12 Measuring brake assembly. Automatic locking hub:

a. Assemble brake A and brake B, then measure thickness of assembly at two lugs on brake A.
b. Standard thickness is 0.413 inch and minimum thickness is 0.378 inch.
7. Inspect return and shift springs as follows:

Fig. 13 Measuring spring free length. Automatic locking hub:

a. Measure free length of spring as shown.
b. Minimum return spring free length is 1.38 inches.
c. Minimum shift spring free length is 1.18 inches.
8. Replace any components that are damaged, excessively worn, or that are not within specifications.

ASSEMBLY

Apply Mopar grease 2525035 or equivalent to mounting surfaces of all components and reverse disassembly procedure, noting the following:
1. Pack grooves of retainer B with specified grease.
2. Install return spring with smaller diameter coil toward cam.
3. Pack grooves of brake B with specified grease.