JLG 500RTS ANSI Service Manual - Manual (Page 24)

SECTION 2 - PROCEDURES
2-8 – JLG Sizzor – 3121103
EXTREME CARE SHOULD BE TAKEN WHEN INSTALLING THE
CYLINDER ROD, HEAD, AND PISTON. AVOID PULLING THE ROD
OFF-CENTER, WHICH COULD CAUSE DAMAGE TO THE PISTON
AND CYLINDER BARREL SURFACES.
12. With barrel clamped securely, and while adequately
supporting the rod, insert the piston end into the
barrel cylinder. Ensure that the piston loading o-ring
and seal ring are not damaged or dislodged.
13. Continue pushing the rod into the barrel until the cyl-
inder head gland can be inserted into the barrel cyl-
inder.
14. If applicable, secure the cylinder head retainer using
a suitable spanner type wrench.
15. After the cylinder has been reassembled, the rod
should be pushed all the way in (fully retracted) prior
to the reinstallation of any holding valve or valves.
16. If applicable, install the cartridge-type holding valve
and fittings in the port block using new o-rings as
applicable. Refer toTable 2-2, Holding Valve Torque
Specifications.
2.12 TILT ALARM SWITCH
NOTE: The machine may be equipped with a tilt alarm
switch (sensor) which is factory set to activate at 2°
that will sound an alarm and illuminate a warning
light on the platform control console. Consult factory
for tilt sensor adjustment. The only field adjustment
necessary is leveling the switch on the spring loaded
studs.
PERFORM TILT ALARM SWITCH LEVELING PROCEDURE A MINI-
MUM OF EVERY SIX MONTHS TO ENSURE PROPER OPERATION
AND ADJUSTMENT OF SWITCH.
Manual Adjustment
1. Park the machine on a flat, level surface and ensure
machine is level.
NOTE: Ensure switch mounting bracket is level and securely
attached.
2. Level the base of the indicator by tightening the
three flange nuts. Tighten each nut until bubble in
the indicator is in the center of indicator.
3. Individually push down on one corner at a time;
there should be enough travel to cause the switch to
trip. If the switch does not trip in all three tests, the
flange nuts have been tightened too far. Loosen the
nuts and repeat steps (2) and (3).
2.13 PRESSURE SETTING PROCEDURES
Rexroth/Hydraforce Valve
1. Install pressure gauge at port G on Rexroth/
Hydraforce Valve.
2. Adjust both steer section crossover reliefs all the
way in.
3. Adjust main relief cartridge out several turns.
4. Activate engine and allow hydraulic system to come
up to operating temperature.
5. Bottom out steer function. Adjust main relief to 2800
psi (193 bar).
6. Bottom out front steer right and steer left functions
and adjust each steer crossover relief to 1500 psi
(103 bar).
7. Bottom out Rear Steer Right and Steer Left functions
and adjust each Steer Crossover Relief to 1500 psi
(103 bar).
8. Bottom out Platform Ext. Extended functions and
adjust each Ext. Crossover Relief to 1200 psi (83
bar).
9. De-energize Platform Ext. function, shut down
motor, and disconnect pressure gauge.