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Nexen FMCBES-625 801652 User Manual

Page 10

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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

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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.

This manual is related to the following products: