Nexen FMCB-7-38 801613 - Manual (Page 13)

FORM NO. L-20179-H-1209 13
PISTOn BearInG anD O-rInG SealS
nOTe: The following sections are arranged by model. Verify that you are in the correct section for your model.
FMCB 130-19 anD 130-24
refer to Figures 10 & 11.
1. Remove the four Socket Head Cap Screws (Item
13) and separate the Air Chamber (Item 12) from the
Housing (Item 1).
2. Remove the four Socket Head Cap Screws (Item
13) securing the Male Pilot (Item 20) to the Air
Chamber (Item 12).
3. Remove the Male Pilot (Item 20) and Stub Shaft (Item
23) from Air Chamber (Item 12).
4. Remove the Retaining Ring (Item 6) from the Splined
Disc (Item 10).
5. Press the Splined Disc (Item 9) from the Bearing (Item
2).
6. Remove the Piston (Item 16) from the Air Chamber
(Item 12).
7. Remove the Retaining Ring (Item 3) from the Piston.
8. Remove the O-Ring Seals (Items 14 and 15) from the
Piston and Air Chamber.
9. Press the Bearing (Item 2) out of the Piston (Item
16).
10. Clean the bearing bore of the Piston with fresh safety
solvent, making sure that all old Loctite ® residue is
removed.
11. Apply an adequate amount of Loctite ® 680 to evenly
coat the outer race of the new Bearing (Item 2).
12. Carefully align the outer race of the new Bearing (Item
2) with the bore of the Piston.
13. Supporting the Piston (Item 16) and pressing on the
outer race of the new Bearing (Item 2), press the new
Bearing into the Piston.
14. Reinstall the Retaining Ring (Item 3), securing the
Bearing to the Piston.
15. 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 (Items 14
and 15).
16. Slide the Piston (Item 16) into the Air Chamber (Item
12).
17. Support the inner race of the Bearing (Item 2) and
press the Splined Disc (Item 9) into the Bearing and
Piston.
18. Reinstall the Retaining Ring (Item 6) that secures the
Splined Disc to the Bearing.
19. Apply a drop of Loctite ® 242 to the threads of the
Socket Head Cap Screws (Item 13).
20. Reinstall and tighten the four Socket Head Cap
Screws (Item 13) securing the Air Chamber (Item
12) to the Housing (Item 1) to 33.2 Nm 24.5 ft-lb
torque.
Figure 10
12
23
20
13 13
1
Figure 11
9
12
6
3
2
16
15
14
CAUTION
Working with spring loaded or tension
loaded fasteners and devices can cause
injury. Wear safety glasses and take the
appropriate safety precautions.