JLG 40RTS ANSI Service Manual User Manual
Page 36
SECTION 2 - PROCEDURES
2-20
– JLG Sizzor –
3120691
sure is inadequate, shut down and determine the cause
for improper pressure.
INADEQUATE CHARGE PRESSURE WILL AFFECT THE OPERA-
TOR’ S ABILITY TO CONTROL THE MACHINE.
Shut down the engine and connect the external control
input signal. Also reconnect the machine function(s), if
disconnected earlier. Start the engine, checking to be cer-
tain the pump remains in neutral. With the engine at nor-
mal operating RPM, slowly check for forward and reverse
machine operation.
Charge pressure may slightly decrease during forward or
reverse operation. Continue to cycle slowly between for-
ward and reverse for at least five minutes.
Shut down engine, remove gauges, and plug ports.
Check reservoir level and add filtered fluid if needed.
The machine is now ready for operation.
2.19 PRESSURE SETTING PROCEDURES - (2
W/S)
Racine Two Stack Valve
1.
Install pressure gauge at quick connect on Racine
Two Stack Valve.
2.
Adjust both Steer Section Crossover Relief’s 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
2500 psi (172 bar).
6.
Bottom out Steer Right and Steer Left functions and
adjust each Steer Crossover Relief to 1500 psi (103
bar).
7.
Bottom out Lift Up functions and adjust Lift Up Relief
Pressure to:
25RTS - 1300 psi (90 bar)
33RTS - 1550 psi (107 bar)
40RTS - 2000 psi (138 bar)
8.
De-energize Lift function, shut down motor, and dis-
connect pressure gauge.
Lift Down Speed Adjustment
1.
Activate engine and allow hydraulic system to come
up to operating temperature.
2.
Adjust color flow valve lift down speed at 30-40 sec-
onds.
Leveling Jacks Valve (If Equipped)
1.
Activate engine and allow hydraulic system to come
up to operating temperature.
2.
Install pressure gauge at quick connect on Racine
Two Stack Valve.
3.
Energize and bottom out any jack function. Adjust
relief cartridge as follows:
25RTS - 1300 psi (90 bar)
33RTS - 1550 psi (107 bar)
40RTS - 1900 psi (131 bar)
4.
De-energize jack function and shut down engine.
Remove pressure gauge.