JLG 660SJ Service Manual - Manual (Page 68)

SECTION 3 - CHASSIS & TURNTABLE
3-18 – JLG Lift – 3120840
Spindle-Brake Disassembly
NOTE: This procedure applies only to units with integral
Input Brake (8).
EYE PROTECTION MUST BE WORN WHILE PERFORMING THE
STEPS 1-3 IN THIS PROCEDURE.
1. Compress the Compression Springs (8L) by install-
ing two 1/4-20 x 5/8” Flat Head Cap Screws (22)
through Pressure Plate (8B) and into Piston (8A) and
tightening incrementally until spring force has been
taken off of the Retaining Ring (8C).
NOTE: Flat Head Cap Screws (22) are removed prior to
shipping new units since they are for transit and ser-
vice only. They are included in most brake repair
kits.
2. Using retaining ring pliers, remove Retaining Ring
(8C) from the groove in the Spindle (1A).
3. Back Flat Head Cap Screws (22) incrementally out
of Piston (8A) until spring force is relieved from the
1A. Spindle
7. Coupling Subassembly
8A. Piston
8B. Pressure Plate 8C. Retaining Ring
8D. O-Ring
8E. Backup Ring
8F. O-Ring 8H. Backup Ring
8J. Rotor
8K. Stator
8L. Compression Spring 12. Plastic Plug
21. Pipe Plug
22. Flat Head Capscrew
Figure 3-9. Spindle Brake
1K. Retaining Ring
1L. Spring
1M. Spacer
7. Coupling
Figure 3-10. Coupling Subassembly