Nexen F-450 802700 - Manual (Page 10)

10 FORM NO. L-20003-AA-1112
PARTS REPLACEMENT
Refer to Figures 6 - 10.
1. Remove the Set Screw (Item 19), Adjustment Nut (Item
2), and the Thrust Washer (Item 3).
NOTE: The FW Clutch has a Key (Item 20) in the Hub
(Item 1). Do not remove this Key.
The FW Clutch does not have a Fiber Washer (Item
10).
2. Slide the Air Chamber (Item 8), Piston (Item 4), Fiber
Washer (Item 10), and Friction Disc (Item 11) off the
Hub (Item 1).
3. Separate the Piston (Item 4) from the Air Chamber (Item
8); then, remove the old O-ring Seals (Items 6 and 7)
from the Piston and Air Chamber.
4. Slide the Thrust Bearings (Item 5) out of the Piston
(Item 4) and Air Chamber (Item 8).
5. Clean the O-ring contact surfaces of the Piston (Item 4)
and Air Chamber (Item 8) with fresh safety solvent.
6. Lubricate the new O-ring Seals (Items 6 and 7) with
fresh O-ring lubricant and install the new O-ring Seals
onto the Piston (Item 4) and Air Chamber (Item 8).
7. Align the Spring Pin (Item 28) on the Piston (Item 4)
with the hole in the Air Chamber (Item 8); then, slide
the Piston into the Air Chamber.
8. Remove the Compression Spring (Item 14) from the
Hub (Item 1); then, press the Ball Bearing (Item 23 or
15) and Sheave (Item 16) or Drive Disc (Item 22) off
the Hub (Item 1).
9. Remove the Retaining Ring (Item 36).
NOTE: Sheave Mount Clutch Ball Bearings are Item 15.
Pilot Mount Clutch Ball Bearings are Item 23.
The HW Clutch has two Ball Bearings (Item 15) in the
Sheave (Item 16) and Drive Disc (Item 22).
FIGURE 6
19
2
3
FIGURE 7
1
11
10
8
4
FIGURE 8
5
8
7
6
28
4
5
Blackened
Race
Blackened
Race
FIGURE 9
1
1
36
36
23
15
22
12 13 14
13
14
16
12
PILOT
MOUNT
SHEAVE
MOUNT
CAUTION
Working with spring loaded or tension
loaded fasteners and devices can cause
injury. Wear safety glasses and take the
appropriate safety precautions.