JLG 340AJ, Service And Maintenance Manual

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SECTION 3 - CHASSIS & TURNTABLE
3-16 – JLG Lift – 3121259
2. Remove Compression Springs (8L) and (8M) from Brake
Piston (8A).
3. Using an air hose, slowly and carefully pressurize the
brake port in the Spindle (1 A) until the Brake Piston (8A)
comes out of brake piston bore of Spindle (1 A), then
pull the Brake Piston (8A) out of the Spindle (1A) by
hand.
4. Remove Backup Ring (8H) and O-Ring (8F) from grooves
in Spindle (1A) and Brake Piston (8A).
5. Remove Coupling (7) from brake cavity in Spindle (1A).
6. Remove Backup Ring (8E) and O-Ring (8D) from grooves
in Spindle (1A).
7. Remove Brake Rotors (8J) and Brake Stators (8K) from
brake cavity in Spindle (1A).
8. Remove Retaining Ring (5) out of the internal groove of
Coupling (7) using Truarc #0100 or equivalent pliers.
9. Remove the Thrust Washer (1M) and Spring (1L) out of
the bore of Coupling (7).
10. Knock Ball Bearing (8B) out of Spindle (1A) counterbore
if needed.
11. Remove Pressure Plug (22) and Pipe Plug (12) from Spin-
dle (1 A) if applicable. This completes the Spindle-Brake
Subassembly Disassembly.
Cover Disassembly
1. Remove Thrust Washer (2) from pocket side of the Cover
(6A), if necessary.
2. Unscrew Hex Head Bolts (6C) and remove Disengage
Cap (6B) from Cover (6A).
3. Pull Disengage Rod (6D) out from Cover (6A).
4. Use appropriate tool to remove O-Ring (6E) from inter-
nal groove in Cover (6A).
5. Remove O-Ring Pipe Plugs (6F) from Cover (6A).
NOTE: O-Ring (6K) can be discarded unless cover subassembly
needs to be repainted.
Figure 3-13. Spindle-Brake Subassembly - Figure 3
1L. Spring
1M. Thrust Washer
5. Internal Retaining Ring
7. Coupling