JLG 340AJ Service Manual - Manual (Page 262)

SECTION 6 - JLG CONTROL SYSTEM
6-18 – JLG Lift – 3121259
Valve and Actuator Outputs Engine Proportional Throttle Actuator No STB/OC
No STG; energize and verify current path
Engine High Speed Throttle Actuator No STB/OC for relay
No STG; energize to verify
Drive Forward Valve No STB/OC
No STG; energize and verify current path
Drive Reverse Valve No STB/OC
No STG; energize and verify current path
Swing Left Valve No STB/OC
No STG; energize and verify current path
Swing Right Valve No STB/OC
No STG; energize and verify current path
Tower Lift Up Valve No STB/OC
No STG; energize and verify current path
Tower Lift Down Valve No STB/OC
Do not check STG
Lift Up Valve No STB/OC
No STG; energize and verify current path
Lift Down Valve No STB/OC
Do not check STG
Flow Control Valve No STB/OC
No STG; energize and verify current path
Telescope In Valve No STB/OC
No STG; energize Tele In and Out simultaneously
Telescope Out Valve No STB/OC
No STG; energize Tele In and Out simultaneously
Level Up Valve No STB/OC
No STG; energize Level Up and Down simultaneously
Level Down Valve No STB/OC
No STG; energize Level Up and Down simultaneously
Platform Station
Digital and Functional Switch Inputs (Platform
Module communicates and Ground Module veri-
fies) Engine Start Open; de-energized
Emergency Descent Open; de-energized
Drive Speed Select Open or Closed, but not both Max Speed and Max Torque
Horn Open; de-energized
Tower Lift Up Open; de-energized
Tower Lift Down Open; de-energized
Telescope In Open; de-energized
Telescope Out Open; de-energized
Jib Up Open; de-energized
Jib Down Open; de-energized
Level Up Open; de-energized
Level Down Open; de-energized
Rotate Left Open; de-energized
Rotate Right Open; de-energized
Table 6-5. System Startup Checks
Item Checked Function Condition/Action