Nexen MWCB 830812 - Manual (Page 20)

20
FORM NO. L-20016-X-1209
HWCB
Refer to Figures 31 & 32.
1. Fully supporting the inner bearing race, press the Hub (Item
43) into the Sheave of Drive Disc Assembly.
2. Slide the Compression Spring (Item 11) onto the Hub (Item
43); then, supporting the inner bearing race, press the Clutch
Assembly onto the Hub (Item 43).
3. Lubricate the new O-Ring Seals (Items 19 and 21) with fresh
O-Ring lubricant; then, install the new O-Rings Seals onto
the Brake and Clutch Assemblies.
4. Align the Slotted Spring Pin (Item 23) located on the Brake
Assembly with the hole in the Clutch Assembly and press
the Brake Assembly onto the Hub (Item 43).
5. Slide the Spacer (Item 16) onto the Hub (Item 43); then,
slide the Brake Friction Disc (Item 44) onto the Hub.
6. Align the two holes in the Locking Collar (Item 46) with the
two holes in the Hub (Item 43); then, reinstall the Locking
Collar and tighten the Socket Head Cap Screw (Item 47) to
300 In. Lbs. [33.6 Nm] torque.
FIGURE 31
43
Drive Disc
Assembly
Sheave
Assembly
Clutch
Assembly
11
FIGURE 32
Hub
(Item 43)
19
21
Brake
Assembly
16
44
46
45
28
47
23
Clutch
Assembly
REASSEMBLy—PILOT, COUPLING, AND SHEAVE MOUNT (continued)