Adjustments ........................................................................................................................................ 5-75

Traction Pedal Friction Wheel (Machine Serial Number below 316000000)...................................... 5-75

Service and Repairs ........................................................................................................................... 5-77

General Precautions for Removing and Installing the Hydraulic System Components...................... 5-77

Checking the Hydraulic Lines and Hoses ......................................................................................... 5-78

Priming the Hydraulic Pump............................................................................................................. 5-79

Flushing the Hydraulic System......................................................................................................... 5-80

Filtering the Closed-Loop Traction Circuit (Machine Serial Number above 316000000).................... 5-82

Charging the Hydraulic System........................................................................................................ 5-85

Transmission Driveshaft (Machine Serial Numbers below 316000000)............................................ 5-87

Hydrostatic Transmission (Machine Serial Numbers below 316000000) .......................................... 5-90

Servicing the Hydrostatic Transmission (Machine Serial Numbers below 316000000) ..................... 5-93

Hydrostatic Transmission Neutral Arm Assembly (Machine Serial Number below

316000000)...................................................................................................................................... 5-95

Hydraulic Pump Driveshaft (Machine Serial Number above 316000000) ......................................... 5-97

Hydraulic Pump (Machine Serial Number above 316000000) ........................................................ 5-100

Servicing the Hydraulic Pump (Machine Serial Number above 316000000) ................................... 5-103

Traction Neutral Arm Assembly (Machine Serial Number above 316000000)................................. 5-105

Front Axle Drive Motor (Machine Serial Number above 316000000) .............................................. 5-107

Servicing the Front Axle Drive Motor (Machine Serial Number above 316000000) ......................... 5-109

Lift Cylinder .................................................................................................................................... 5-110

Steering Control Valve ................................................................................................................... 5-113

Servicing the Steering Control Valve .............................................................................................. 5-116

Steering Cylinder (2-Wheel Drive).................................................................................................. 5-117

Servicing the Steering Cylinder (2-Wheel Drive) ............................................................................ 5-120

Steering Cylinder (4-Wheel Drive).................................................................................................. 5-123

Servicing the Steering Cylinder (4-Wheel Drive) ............................................................................ 5-125

Lift Control Valve (Machine Serial Numbers below 316000000) ..................................................... 5-127

Servicing the Lift Control Valve (Machine Serial Numbers below 311000000)................................. 5-130

Counterbalance Valve Manifold (Machine Serial Numbers below 311000000) (If

Equipped)....................................................................................................................................... 5-133

Lift Control Valve (Machine Serial Number above 311000000)....................................................... 5-136

Servicing the Lift Control Valve (Machine Serial Number above 311000000) .................................. 5-139

Oil Cooler (Groundsmaster 3280-D) .............................................................................................. 5-142

Additional Reference Materials

DANFOSS DDC20 AXIAL PISTON PUMP SERVICE MANUAL

DANFOSS SERIES 15 AXIAL PISTON PUMPS, MOTORS AND TRANSMISSIONS REPAIR MANUAL

DANFOSS SERIES 15 AXIAL PISTON PUMPS, MOTORS AND TRANSMISSIONS SERVICE MANUAL

EATON MODEL 74111 AND 74118 FIXED AXIAL PISTON MOTOR REPAIR INFORMATION DANFOSS

STEERING UNIT TYPE OSPM SERVICE MANUAL

Hydraulic System: Adjustments

Page 5-2

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