JLG G6-42P Service Manual - Manual (Page 295)

Section 2
Removal and Disassembly
CAUTION
Loosen and remove brake cylinder capscrews
alternately to avoid spring load damage to parts.
5. Disassemble brake cylinder assembly. Remove
brake release capscrew. Loosen and remove
brake cylinder capscrews alternately to avoid
spring load to be supported by only one capscrew.
6. Remove spring, piston and O-ring seals. Do not
cut or scratch them.
7. Clean cylinder and brake support surfaces. Do
not damage ground surfaces.
8. Put parts of each brake cylinder assembly in
separate plastic bags to avoid mixing them.
Disassemble Trumpet
Assembly
WARNING
To avoid serious personal injury and possible
damage to components, be very careful when
using lifting devices during removal and
disassembly procedures.
• Inspect to make sure that neither lifting strap is
damaged.
• Do not subject lifting straps to any shock or
drop loading.
1. Support trumpet to be serviced with lifting device.
Figure 2.3.
2. Loosen and remove trumpet nuts and bolts.
!
!
3
NOTE
For three function brake design: If bleeder and
pressure ports of brake piston are open, the
trumpet assemblies and ring gear will come off
the center section easily without using puller
holes. Cover pressure ports with rags to avoid
contact with escaping oil.
3. Use two puller holes in trumpet flange to remove
trumpet assembly from main housing.
NOTE
Use steps 1 through 3 to remove second trumpet
assembly.
4. Remove ring gears from both sides through the
two threaded puller holes.
(Thread: M14 x 1.5 x 6 g).
WARNING
Do not hit steel parts with a steel hammer during
removal and disassembly procedures. Parts can
break and cause serious personal injury.
5. From main housing, remove sun axle shaft,
spacers (if used), compression plates, stationary
discs, friction discs, lock pins and expansive
plate assemblies. To make lock pin removal
easier, hit main housing with brass hammer.
Figure 2.4.
!
Figure 2.3
Figure 2.4