Nexen FMCBES-625 801652 User Manual
Page 10
FORM NO. L-20178-N-0513
10
PARTS REPLACEMENT –BEARING, O-RING SEALS, AND COMPRESSION SPRINGS
1. Remove the four Socket Head Cap Screws ( Item
14) and separate the Air Chamber (Item 13) from the
Housing (Item 7) (See Figure 7).
2. Remove the four Socket Head Cap Screws (Item 14)
securing the Male Pilot (Item 18) to the Air Chamber
(Item 13) (See Figure 7).
3. Remove the Male Pilot (Item 18) and Stub Shaft (Item
24) from the Air Chamber (Item 13) (See Figure 7).
Note
The Piston is spring loaded and under extreme
pressure.
4. Using a “C”-clamp or Arbor press fixture, press the
Piston (Item 15) into the Air Chamber (Item 13); then,
remove the Retaining Ring (Item 6) from the Splined Disc
(Item 9) (See Figure 8).
5. Slowly remove the “C”-clamp or release the Arbor
press.
6. Press the Splined Disc (Item 9) from the Bearing
(Item 2) (See Figure 8).
7. Remove the Piston (Item 15) and Compression Springs
(Item 17) from the Air Chamber (Item 13) (See Figure
8).
8. Remove the Retaining Ring (Item 3) from the Piston
(See Figure 8).
9. Remove the old O-ring Seal (Item 16) from the Piston
(See Figure 8).
10. Press the Bearing (Item 2) out of the Piston (Item 15)
(See Figure 8).
11. Clean the bearing bore of the Piston with fresh safety
solvent, making sure all old Loctite
residue is removed.
12. Apply an adequate amount of Loctite
680 to evenly
coat the outer race of the new Bearing.
13. Carefully align the outer race of the new Bearing (Item
2) with the bore of the Piston (Item 15) (See Figure 8).
14. Supporting the Piston and pressing on the outer race
of the new Bearing, press the new Bearing into the
Piston.
15. Reinstall the Retaining Ring (Item 3), securing the
Bearing to the Piston.
TABLE 5
16. Coat the O-ring contact surfaces of the Air Chamber,
Piston, and the O-ring Seals with a thin film of O-ring
lubricant and install the new O-ring Seals (item 16)
(See Figure 8).
17. Reinstall the Compression Springs (Item 17) into the
Piston (Item 15) (See Figure 8).
18. Slide the Piston (Item 15) into the Air Chamber (Item
13) (See Figure 8).
19. Support the inner race of the new Bearing and press
the Splined Disc into the new Bearing and Piston.
20. Use a “C”-clamp or Arbor press fixture to compress
the Piston (Item 15) into the Air Chamber (Item 13);
then, reinstall the Retaining Ring (Item 6) that secures
the Splined Disc to the Bearing.
21. Remove the “C”-clamp or release the Arbor press.
22. Apply a drop of Loctite
242 to the threads of the Socket
Head Cap Screws (Item 14) (See Figure 7).
23. Reinstall and tighten the four Socket Head Cap Screws,
securing the Air Chamber (Item 13) to the Housing
(Item 7) to the recommended torque (See Figure 7
and Table 5).
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FIGURE 7
14
15
13
9
2
17
16
FIGURE 8
3
6
CAUTION
Working with spring loaded or tension
loaded fasteners and devices can cause
injury. Wear safety glasses and take the
appropriate safety precautions.