Nexen XHW 848200 - Manual (Page 8)

8
FORM NO. L-20004-K-1209
PARTS REPLACEMENT
Refer to Figures 3 & 4.
FRICTION FACING (ITEM #4)
1. Remove Retaining ring (Item #13) and Bearing Adapter
(Item #7).
2. Slide Piston (Item #6), Air Chamber (Item #5) and
Friction Disc (Item #3) off Hub (Item #1).
3. Remove the eight brass Machine Screws (Item #16)
and the Friction Facing (Item #4).
NOTE
The machine screws are assembled with a red anaerobic
compound. If removal is difficult, strike the end of the
screwdriver with a hammer to break the crystalline
structure of the compound before attempting to remove
the screws.
4. Install new friction facing. Tighten the replacement
screws to 265 in-lbs. [29.9 Nm].
5. Reassemble clutch.
O-Ring (ITEM #14 and #15)
1. Remove Retaining Ring (Item #13) and Bearing Adapter
(Item #7).
2. Gently apply air pressure to the air inlet, and separate
the Piston (Item #6) and Air Chamber (Item # 5).
3. Remove O-Rings (Item #14 and #15).
4. Lubricate with O-Ring lubricant and install new
O-Rings.
5. Align the Spring Pin (Item #18) with the piston and air
chamber.
6. Reassemble the clutch.
AIR CHAMBER BEARING (ITEM #11)
1. Remove Retaining Ring (Item #13) and Bearing Adapter
(Item #7).
2. Remove Air Chamber (Item #5) and Piston (Item # 6)
from Hub (Item # 1).
3. Separate Air Chamber (Item #5) and Piston (Item
#6).
NOTE
Care must be taken to prevent damage to O-Rings (Items
#14 and #15).
4. Using a bearing puller, remove the bearing from the
piston and air chamber.
NOTE
When installing new bearings, carefully align the bearing
O.D. with the housing bore. Apply Loctite RC601 or
equivalent to the outer race of the new bearing.
5. Press new bearings into the air chamber bore and into
the piston.
6. Reinstall O-Rings (Items #14 and #15).
7. Align the Spring Pin (Item #18) with the piston and air
chamber.
8. Reassemble the clutch.
SHEAVE, PILOT, OR DISC DRIVE BEARINGS
(ITEM #11)
1. Remove Retaining Rings (Items #9 and #12).
2. Fully support the sheave, pilot, or drive disc and press
out the Hub (Item #1).
3. Remove Bearings (Item #11) and Spacer (Item #8).
4. Press first bearing into place and install spacer, the
press second bearing into place.
5. Reassemble the clutch.
RETURN SPRING (ITEM #10)
1. Remove Retaining Ring (Item 13) and Bearing adapter
(Item #7).
2. Slide Piston (Item #6), Air Chamber (Item #5) and
Friction Disc (Item #3) off Hub (Item #1).
3. Remove old Return spring and install new Return Spring
(Item #10).
4. Reassemble the clutch.
NOTE
Inspect the Friction Facing (Item #4), and replace when
worn to approximately 3/16 inch to 1/4 inch thick.
CAUTION
Working with spring loaded or tension
loaded fasteners and devices can cause
injury. Wear safety glasses and take the
appropriate safety precautions.