Service and Repairs ........................................................................................................................... 4-87
Priming the Hydraulic Pumps ........................................................................................................... 4-88
Hydraulic Tank ................................................................................................................................. 4-96
Hydraulic Pump Driveshaft............................................................................................................... 4-98
Hydraulic Pump Assembly ............................................................................................................. 4-101
Servicing the Gear Pump ............................................................................................................... 4-107
Front Wheel Motors........................................................................................................................ 4-110
Rear Wheel Motors ........................................................................................................................ 4-116
Cutting Deck Motor ........................................................................................................................ 4-130
Lift Control Manifold ....................................................................................................................... 4-139
Lift Cylinder .................................................................................................................................... 4-144
Servicing the Lift Cylinder .............................................................................................................. 4-147
Steering Control Valve ................................................................................................................... 4-150
Steering Cylinder ........................................................................................................................... 4-155
Oil Cooler Assembly....................................................................................................................... 4-161
Additional Reference Materials
Danfoss LPV Pump Repair Manual
Danfoss LPV Pump Service Manual
Eaton Delta Motors Parts and Repair Manual
Parker Torqmotor Service Procedure (TC, TB, TE, TJ, TF, TG, TH, and TL Series)
Danfoss OSPM Steering Unit Service Manual
Hydraulic System: Service and Repairs
Page 4-2
Groundsmaster
®
4300-D
16226SL Rev C