JLG 80SL, Service Maintenance Manual

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SECTION 3 - CHASSIS, PLATFORM & SCISSOR ARMS
3-18 – JLG Lift – 3121325
Hydraulic Pump
Pump Flow
• Flow from the pump to the control valve is protected by
a full flow and a load sensing dump valve, both nor-
mally-open to tank ports. To generate hydraulic power
to the control valve, both dump valves need to be acti-
vated.
THIS PUMP IS FACTORY SET FOR FLOW, PRESSURE, AND
HORSEPOWER CONTROL AND SHOULD NOT BE ADJUSTED.
CONTACT THE JLG SERVICE DEPARTMENT FOR INFORMATION.
1
2
3
Figure 3-16. Variable Displacement Axial Piston Pump
1. Drain Port
• tighten to 177 lb ft (240 Nm)
2. Pressure Port
• tighten to 30 lb ft (40 Nm)
3. Inlet Port
• tighten to 66 lb ft (90 Nm)
Table 3-5. Variable Displacement Axial Piston Pump Specs
Displacement 45 cc/rev
Max Speed 2300 rpm
Power 40 Kw
Delta "P" 203 psi at 3046 psi (14 bar at 210 bar)
Max Torque 146 lb ft (200 Nm)
Torque 53 lb ft (72 Nm)
Filling Volume 0.26 gal (1.0 L)
Nominal Pressure 4000 psi (280 bar)
Max Pressure 5100 psi (350 bar)
Weight (dry) 46.3 lbs (21 kg)