
vi Table of Contents
Grease ......................................................................................................................................................................................... 31
Hydraulic Oil ............................................................................................................................................................................. 31
Engine Oil ................................................................................................................................................................................... 32
Transmission Oil ...................................................................................................................................................................... 32
Centralized Grease Block ............................................................................................................................................................. 33
Lubricating Packer Rails ............................................................................................................................................................... 35
Preventive Maintenance ........................................................... 37
Operating and Maintenance Records ..................................................................................................................................... 37
WITTKE™ Preventive Maintenance Chart ................................................................................................................................. 38
Electrical System ....................................................................... 41
Electrical Schematics .................................................................................................................................................................... 41
How the Electrical System Works ............................................................................................................................................. 41
Adjusting and Repairing Electrical Components ............................................................................................................... 43
Fuses and Circuit Breakers ................................................................................................................................................... 43
Limit and Proximity Switches ............................................................................................................................................. 45
Limit Switch Adjustment ...................................................................................................................................................... 47
Proximity Switch Adjustment ............................................................................................................................................. 47
Packer Fully Retracted Proximity Switch ........................................................................................................................ 48
Packer Fully Extended Proximity Switch ........................................................................................................................ 49
Side Access Door Proximity Switch .................................................................................................................................. 50
Top Door Fully Open Proximity Switch ........................................................................................................................... 51
Tailgate Unlocked Proximity Switch ................................................................................................................................ 52
Tailgate Fully Open Proximity Switch .............................................................................................................................. 53
Arms Partially Raised Proximity Switch ........................................................................................................................... 53
Arms and Forks Fully Retracted Proximity Switch ...................................................................................................... 55
Body Raised Limit Switch (optional) ................................................................................................................................ 58
Multiplex System-Related Interventions ............................................................................................................................... 59
IFM Program Update Process ............................................................................................................................................. 59
J1939 Baud Rate ...................................................................................................................................................................... 61
Checking Control Module (Node) Supply Voltage ..................................................................................................... 63
Pneumatic System ..................................................................... 65
How the pneumatic system works .......................................................................................................................................... 65
Air Supply ................................................................................................................................................................................... 65
Filter System ............................................................................................................................................................................. 65
Air Dryer ..................................................................................................................................................................................... 67
Controls ...................................................................................................................................................................................... 68
Auxiliary Controls (optional) ............................................................................................................................................... 69
Speed-Up Switch (optional) ................................................................................................................................................ 69
Pneumatic Valve Box and Air Valves ................................................................................................................................ 70
Air Actuators ............................................................................................................................................................................. 71
Central Air Drain Cocks (optional) ..................................................................................................................................... 72
Control System Pneumatic Pressure Switch ......................................................................................................................... 73
Auto-Dump System (optional) .................................................................................................................................................. 75
Auto-Dump Calibration Procedure .................................................................................................................................. 75
Pneumatic System Schematics ................................................................................................................................................. 76
Hydraulic System ....................................................................... 81
General Maintenance ................................................................................................................................................................... 81
Hydraulic Pump .............................................................................................................................................................................. 82
Inspecting the Pump ............................................................................................................................................................. 83
Replacing the Hydraulic Pump .......................................................................................................................................... 84