JLG Lull 1044C-54 II Series Service Manual page 132

Supply, Pressure, and Return Hydraulics
5-50
• Pump 1 – Used for reading pressure of the hydraulic pump #1.
Pressure limit is 3000 psi.
• Pump 2 – Used for reading pressure of the hydraulic pump #2.
Pressure limit is 3150 psi.
• Rear Osc. Lock (G1) – Used for reading output pressure of the sole-
noid valve SV1. It is useful when diagnosing service malfunctions in
the rear axle stabilizer circuit.
• Rear Osc. Lock (G2) – Used for reading pressure in the rear oscilla-
tion lock circuit.
• Brakes – Used for reading pressure of the brake circuit and is used to
indicate when pressure is eliminated from the system prior to discon-
necting hydraulic hoses. Pressure limit is 425 psi.
• Steering – Used for reading pressure of the steering circuit. Pressure
limit is 2355 psi.
• Pilot – Used for reading pressure of the joystick circuit. Pressure limit
is 500 psi.
• Accum. – Used for reading of pressure in the accumulator charging
circuit. Pre-charge pressure is 400 psi. The low pressure limit is 1000
psi and the high pressure limit is 1125 psi.
CAUTION: To ensure that system is kept free of dirt and contamination,
always cap all ports when not in use.
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