Wittke StarLight Maintenance Manual page 7

Hydraulic System .................................................................................. 60
Part #: 90309
Valve Box and Air Valves ............................................................ 56
Air Actuators ............................................................................... 57
Central Air Drain Cocks (optional) .............................................. 57
Pneumatic System Schematics .............................................. 58
Hydraulic Oil Tank ................................................................... 60
Return Line Filter .................................................................... 61
Return Line Filter element ....................................................... 61
Routine Maintenance .............................................................. 61
Element Replacement Procedure ........................................... 62
Hydraulic Oil ............................................................................ 63
Recommended Lubricant ............................................................ 63
Hydraulic Pump ....................................................................... 63
Directional Control Valve ........................................................ 64
Pressure Relief Valve ............................................................. 64
Work Circuits ........................................................................... 65
Arms Up Deceleration Valve ................................................... 65
Pack Circuit Dump Valve ........................................................ 67
Pressure Switch ...................................................................... 67
Pressure Switch Adjustment ....................................................... 67
Timer Adjustment ........................................................................ 68
Tailgate Lock Valve ................................................................. 70
Service Hoist (optional) ........................................................... 71
Arms Down Work Section ....................................................... 72
v