JLG 110HX ANSI Service Manual - Manual (Page 48)

SECTION 2 - PROCEDURES
2-24 – JLG Lift – 3120636
Disassembly
NOTE: Left or right is determined facing the machine from
the platform.
1. Loosen the right side powertrack bracket and pow-
ertrack and lay on top of boom assembly.
HYDRAULIC LINES AND PORTS SHOULD BE CAPPED IMMEDI-
ATELY AFTER DISCONNECTING LINES TO AVOID ENTRY OF
CONTAMINANTS INTO SYSTEM.
2. Tag and disconnect hydraulic lines to slave level cyl-
inder and rotator motor.
3. Tag and disconnect wiring to platform control box.
4. Remove the left side powertrack.
5. Remove platform from boom assembly.
6. Remove cotter pins retaining telescope cylinder rod
attach pin to base section.
7. Using a suitable brass drift, carefully drive telescope
cylinder pin from base section.
8. Remove outer mid section extend chain adjust nut
and locknut at upper aft end of base section.
9. Remove bolts, washers and lockwashers attaching
outer mid section extend chain attach block to upper
aft end of base section. Remove block.
10. Remove fly section extend chain adjust nut and
locknut at lower front end of inner mid section.
11. Remove outer mid section retract chain adjust nut
and locknut at lower front end of base section.
12. Remove fly section retract chain adjust nut and lock-
nut at lower front end of inner mid section.
NOTE: Note and record the number and thickness of any
wear pad shims during wear pad removal.
13. Remove bolts and lockwashers attaching side wear
pads to front of base section. Remove pads and any
shims.
14. Remove bolts, washers and lockwashers attaching
lower front wear pads and mounting blocks to base
section. While supporting assembled fly, outer mid
and inner mid sections, remove wear pads, mount-
ing blocks and shims.
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15. Remove bolts and lockwashers attaching top front
wear pad to base section. Remove pad and shims.
16. Using suitable lifting equipment, partially slide
assembled inner mid, outer mid and fly sections out
of base section.
17. Using suitable straps, tie off outer mid section retract
chains to underside of inner mid section as inner
mid, outer mid and fly sections are exiting base sec-
tion.
18. Carefully lift inner mid, outer mid and fly sections
clear of base section and lower to a suitably sup-
ported work area.
19. Using suitable lifting equipment, support telescope
cylinder rod.
20. Remove setscrews securing trunnion pins that
secure inner mid section to telescope cylinder.
21. Using a suitable tool, scribe a line on the outer end
of each trunnion pin and boom structure as an aid to
pin alignment during boom assembly.
22. Using a suitable slide hammer, remove trunnion pins
attaching telescope cylinder to inner mid section.
23. Remove cotter pins and chain attach pins attaching
outer mid section retract chains to lower aft end of
outer mid section and remove chains.
24. Remove setscrews which attach chain sheave pins
at lower aft end of inner mid section.
25. Using a suitable brass drift, carefully drive sheave
pins from inner mid section and remove sheaves
and thrust washers. If necessary, remove bushings
from sheaves and replace. Ensure that pins, grease
fittings and corresponding boom and sheave sur-
faces are not damaged.
26. Remove cotter pins and chain attach pins attaching
fly section retract chains to lower aft end of fly sec-
tion and remove chains.
27. Remove setscrews which attach chain sheave pins
at lower aft end of outer mid section.
28. Using a suitable brass drift, carefully drive sheave
pins from outer mid section and remove sheaves,
seals, and thrustwashers. If necessary, remove
bushings from sheaves and replace. Ensure that
pins, grease fittings and corresponding boom and
sheave surfaces are not damaged.
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