Nexen 1625 Input Unit 936001 - Manual (Page 12)

21070-D-0707 12
REPLACEMENT PROCEDURE–MALE PILOT BEARINGS
FIGURE 13
WARNING
Always wear safety goggles when working
with spring or tension loaded fasteners
or devices, such as the Retaining Rings.
Refer to Figure 13
1. Remove the Retaining Ring (Item 32) from the Stub
Shaft (Item 31).
2. Press the Stub Shaft (Item 31) out of the Male Pilot
(Item 27).
3. Remove the Retaining Ring (Item 28) from the Male
Pilot (Item 27) and press the old Bearings (Item 29) out
of the Male Pilot (Item 27).
4. Clean the bearing bore of the Male Pilot (Item 27) with
fresh safety solvent, making sure all old Loctite ® residue
is removed.
5. Apply an adequate amount of Loctite ® 680 to evenly
coat the outer race of new Bearings (Item 29).
6. Carefully align the outer race of the new Bearings (Item
29) with the bore of the Male Pilot (Item 27).
7. Press the new Bearings (Item 29) into the Male Pilot
(Item 27).
8. Reinstall the Retaining Rings (Item 28 and 32).
9. Apply a thin film of NEVER-SEEZ ® to evenly coat the
spline of the Stub Shaft (Item 31).
10. Slide the Male Pilot (Item 27) and the Stub Shaft (Item
31) into the Air Chamber (Item 14), aligning the Spring
Pin (Item 25) in the Male Pilot (Item 27) with a hole in
the Piston (Item 17). (See Figures 10 & 11)
11. Apply a drop of Loctite ® 242 to the threads of the
Socket Head Cap Screws (Item 8).
12. Reinstall the four Socket Head Cap Screws (Item 8)
securing the Male Pilot (Item 27) to the Air Chamber
(Item 14).
13. Tighten the four Socket Head Cap Screws to 509 in-lbs
(57.5 N-m).
FMCB 1625
1
29
32
2
31
29
2
2
1