Danfoss H1 078 - Page 4

System Noise or Vibration...........................................................................................................................................................29
Sluggish System Response.........................................................................................................................................................29
Transmission Operates Normally in One Direction Only.................................................................................................30
Adjustments
Standard Procedures.................................................................................................................................................................... 31
Charge Pressure Relief Valve Adjustments...........................................................................................................................31
Pressure Limiter Adjustment..................................................................................................................................................... 32
Engaging the Bypass Function..................................................................................................................................................34
Displacement Limiter Adjustment...........................................................................................................................................35
Control Neutral Adjustment.......................................................................................................................................................36
Mechanical Neutral Adjustment...............................................................................................................................................37
Minor Repair
Standard Procedures, Removing the Pump.........................................................................................................................40
EDC Control......................................................................................................................................................................................40
Control Solenoids...........................................................................................................................................................................42
MDC Control.................................................................................................................................................................................... 42
Angle sensor on EDC.....................................................................................................................................................................45
Removal........................................................................................................................................................................................45
Installation...................................................................................................................................................................................46
EDC with angle sensor..................................................................................................................................................................46
Removal........................................................................................................................................................................................46
Installation...................................................................................................................................................................................47
Automotive Control......................................................................................................................................................................48
Bearing and Shaft Replacement...............................................................................................................................................52
External Filter Replacement.......................................................................................................................................................53
Filter Bypass Valve and Filter Bypass Switch........................................................................................................................54
Charge Pump...................................................................................................................................................................................55
High Pressure Relief Valves (HPRV)..........................................................................................................................................58
Charge Pressure Relief Valve......................................................................................................................................................59
Pressure Limiter Valve Replacement.......................................................................................................................................60
Torque Chart
Fastener Size and Torques..........................................................................................................................................................62
Plug Size and Torques..................................................................................................................................................................62
Fasteners and Plugs...................................................................................................................................................................... 63
Service Manual
H1 Pumps 069/078, 089/100, 115/130, 147/165, 210/250
Contents
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Danfoss | May 2018 520L0848 | AX00000087en-US0308