SECTION 4 - BASE COMPONENTS
4-34
– JLG Lift –
3121222
Pump/Motor/Valve Assembly - Removal/Installation
BE CERTAIN THE MAST IS FULLY LOWERED BEFORE REMOVING ANY
HYDRAULIC LINES FROM THE PUMP UNIT. WEAR PROTECTIVE GEAR
WHEN WORKING AROUND PRESSURIZED HYDRAULIC LINES. REMOVE
CONNECTIONS CAREFULLY AND CAP ALL LINES.
1.
Disconnect machine electrical power using the
quick disconnect on the left side batteries.
2.
Disconnect the pump motor power cables from
the power terminals on the side of the motor
housing.
3.
Label and then unplug the harness connectors
from the lift-up, and steer solenoids on the
pump valve bank assembly.
4.
Label and carefully disconnect the hydraulic
lines from the top of the valve bank assembly.
5.
Finally remove the two (2) mounting screws and
nuts from pump mounting plate under the
pump and remove the pump/motor/valve
assembly from the machine.
Hydraulic Pump/Valve/Tank - Installation
1.
Pump/Valve/Tank Assembly
2.
Pump Assy. Mounting Screw/Nuts
3.
Static Strap
4.
Valve Bank Solenoid Connections
5.
Steer/Lift-Up/Return Hydraulic Lines
6.
Pump Motor Power Connection Terminals (a)
NOTE:
(a) Apply dielectric grease to terminals during installation of cables. Torque nuts to 5 - 7 ft. lb. (7 - 9 Nm)
Summary of Contents for 1230ES
Page 1: ...AS NZS Service and Maintenance Manual Model s 1230ES P N 3121222 June 22 2017 ...
Page 2: ...NOTES ...
Page 24: ...SECTION 1 MACHINE SPECIFICATIONS 1 12 JLG Lift 3121222 NOTES ...
Page 32: ...SECTION 2 GENERAL SERVICE INFORMATION 2 8 JLG Lift 3121222 NOTES ...
Page 78: ...SECTION 4 BASE COMPONENTS 4 40 JLG Lift 3121222 NOTES ...
Page 104: ...SECTION 5 CONTROL COMPONENTS 5 26 JLG Lift 3121222 NOTES ...
Page 158: ...SECTION 8 DIAGNOSTIC TROUBLE CODES 8 22 JLG Lift 3121222 NOTES ...
Page 198: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 9 40 JLG Lift 3121222 ...
Page 199: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 3121222 JLG Lift 9 41 ...
Page 200: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 9 42 JLG Lift 3121222 ...
Page 202: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 9 44 JLG Lift 3121222 NOTES ...