Nexen DFC-1650 964149 - Manual (Page 12)

12 FORM NO. L-20312-C-0110
8. Press the two old Ball Bearings (Item 12) and Spacers
(Items 16 and 34) out of the Pilot Housing (Item 2).
9. Press the old Rotary Seal (Item 27) out of the Pilot
Housing (Item 2).
NOTE
The Pilot Housing bore must be 7.8740 +0.0012/-
0.0000'' for DFC 1650 and 9.0551 +0.0012/-0.0000''
for DFC 2200. The Hub diameter must be 5.1189
+0.0000/-0.0007''.
10. Clean the bore of the Pilot Housing (Item 2) with fresh
safety solvent, making sure all old Loctite ® residue is
removed; then, check the diameter of the bore of the
Pilot Housing (Item 2) and the Hub (Item 1).
11. Press a new Rotary Seal (Item 27) into the Pilot Housing
(Item 2).
12. Apply an adequate amount of Loctite ® 680 to coat the
outer race of the first new Ball Bearing (Item 12) and
press it into the Pilot Housing (Item 2).
13. Reinstall the Spacers (Item 16 and 34).
14. Apply an adequate amount of Loctite ® 680 to coat the
outer race of the second new Ball Bearing (Item 12)
and press it into the Pilot Housing (Item 2).
15. Support the inner and outer races of the Ball Bearings
(Item 12) and press the Hub (Item 1) back into the Ball
Bearings (Item 12) and Pilot Housing (Item 2).
16. Reinstall the Retaining Ring (Item 21).
17. Reinstall the Seal Seat (Item 22).
18. Apply a drop of Loctite ® 242 to the threads of the
Socket Head Cap Screw (Item 26); then, install the
Socket Head Cap Screw (Item 26).
19. Tighten the Socket Head Cap Screw (Item 26) to
12 Ft. Lbs. [16.19 Nm] torque.
20. Press a new Rotary Seal (Item 7) into the Seal Seat
(Item 22).
NOTE
Nexen recommends the use of Chevron SRI #2 or
equivalent.
21. Lubricate the Ball Bearings (Item 12) until grease
weeps past the Rotary Seal (Item 7).
22. Secure the Sheave to the clutch (See INSTALLATION).
23. Reinstall the Hub Locking Collar (Item 23) and Set
Screws (Items 24 and 33).
24. Proceed with Steps 6-20 for FRICTION FACING and
O-RING SEAL REPLACEMENT.
FIGURE 12
Rotary Seal
(Item 7)
Rotary Seal
(Item 27)
Ball Bearings
(Item 12)
PART REPLACEMENT: BALL BEARING AND ROTARY SEAL REPLACEMENT (continued)
CAUTION
Working with spring loaded or tension
loaded fasteners and devices can cause
injury. Wear safety glasses and take the
appropriate safety precautions.