JLG G5-18A Service Manual - Manual (Page 44)

Boom
3-12 G5-18A, 2505H, 25.5
3.8 BOOM PROP (IF EQUIPPED)
3.8.1 Prop Installation
1. Park the machine on a firm, level surface. Place the
transmission control lever in (N) NEUTRAL, engage
the park brake switch.
2. Raise the boom to an angle of approximately 20
degrees. Shut engine OFF.
3. Place a Do Not Operate Tag on both the ignition key
switch and the steering wheel.
4. Before installing boom prop, inspect prop for
damage. Do not use if prop is damaged or if o-rings
are damaged or missing.
5. Install boom prop (1) onto lift/lower cylinder. Install
o-rings (2). Align lift cylinder lock so o-rings are on
bottom side of lift/lower cylinder rod.
6. Start engine and SLOWLY lower boom until there is
a clearance of 0.25 in (6 mm) between end of boom
prop and lift/lower cylinder rod end (3).
7. Shut engine OFF.
3.8.2 Prop Removal
1. If needed, start machine and slowly raise the boom
until the boom prop is clear of the lift/lower rod end.
2. Remove the o-rings (2) and boom prop (1) from the
cylinder. Return the boom prop to the proper location
and secure.
3. Lower boom, shut engine OFF.
WARNING
A raised boom can fall if a hydraulic component is
removed. Remove any load, retract the boom and
install the boom prop or a suitable supporting stand
before working under a raised boom.
MAM1280
2
3
2
1
NOTICE
EQUIPMENT DAMAGE. DO NOT operate with the
boom prop in place. Damage to the boom prop and/or
the lift/lower cylinder could occur.