Bearing cups.

ME 3930-624-34/4-23

11.

Wheel

1. Capscrew

12.

Inner cup

2. Lockwasher

Inner bearing

13.

3. Hubcap

Grease shield

14.

4. Cotter pin

Felt strip (drive wheel only)

15.

5. Bearing adjusting nut

Roll pin (drive wheel only)

16.

6. Washer

Roll pin (drive wheel only)

17.

7. Outer bearing

Bull gear (drive wheel only)

18.

8. Capscrew (drive wheel only)

19.

Tire

9. Lockwasher (drive wheel only)

10. Outer cup

Figure 4-23. Wheel assembly.

exploded view.

secure the bull gear to the inner side of the wheel.

(3) Remove outer cup (10), wheel (11), inner

(b) Turn the wheel over. Insert standard

cup (12) inner bearing (13) and grease shield (14).

hardened capscrews with three inches of thread into

(4) For drive wheels only, remove felt strip

the holes provided in the bull gear.

(15) roll pins (16 and 17), and bull gear (18).

(c) Tighten the capscrews evenly until the

c. Repair. Repair wheels as follows:

bull gear is removed from the wheel bore.

(1) Bearing cups.

(d) To install the bull gear, first install the

(a) Insert a brass drift pin in the recesses on

spiral pins in the bull gear. Aline each spiral pin as

the inner hub of the wheel, and tap the drift with a

shown in figure 4-24, with the edge of the outer coil

hammer to remove the bearing cups.

on the bolt circle. Drive the pins into the bull gear

(b) When installing each bearing cup,

from the bottom side until the pins are flush with

position it in the wheel carefully. Press in with an

the top side.

arbor press or use a brass drift. Tap evenly around

the edge of the cup. so that it will not bind.

(2) Bull gear.

(a) Remove the three capscrews which

4-26