Table Of Contents - Danfoss H1F 080 Service Manual

Service Manual
H1F Bent Axis Fixed Displacement Motors, Size 080
Contents
Introduction
H1 general information
Technical specifications
Operation
Operating parameters
Fluid and filter maintenance
Pressure measurements
Initial startup procedures
Troubleshooting
Required tools and standard procedures
Minor repair
© Danfoss | December 2023
H1F About this manual...................................................................................................................................................................5
Warranty.............................................................................................................................................................................................. 5
H1F General instructions............................................................................................................................................................... 5
Safety precautions............................................................................................................................................................................5
About the H1F motors.................................................................................................................................................................... 7
H1F pictorial diagram......................................................................................................................................................................8
H1F system schematic.................................................................................................................................................................... 9
H1F General specifications......................................................................................................................................................... 10
H1F Physical properties............................................................................................................................................................... 10
H1F Operating Parameters......................................................................................................................................................... 11
H1F Required inlet pressure table (for cylinder block filling).........................................................................................11
H1F Open circuit requirements.................................................................................................................................................12
Fluid specifications........................................................................................................................................................................13
Determination of nominal motor size.................................................................................................................................... 13
H1F Shaft rotation direction.......................................................................................................................................................14
H1F Loop flushing shuttle spool...............................................................................................................................................14
H1F loop flushing relief valve.................................................................................................................................................... 15
Speed sensor................................................................................................................................................................................... 16
H1F speed sensor position.................................................................................................................................................... 16
H1F Target Ring.........................................................................................................................................................................16
H1F output speed.......................................................................................................................................................................... 17
H1F system pressure.....................................................................................................................................................................17
Case pressure...................................................................................................................................................................................17
External shaft seal pressure........................................................................................................................................................18
Temperature.................................................................................................................................................................................... 18
Fluid and filter recommendations........................................................................................................................................... 19
H1F Ports and gage information.............................................................................................................................................. 20
Procedure..........................................................................................................................................................................................21
Overview........................................................................................................................................................................................... 23
H1F Sluggish operation............................................................................................................................................................... 23
System operating hot...................................................................................................................................................................23
Excessive noise or vibration....................................................................................................................................................... 23
Motor operates normally in one direction only..................................................................................................................24
Improper output speed............................................................................................................................................................... 24
H1F Low output Torque.............................................................................................................................................................. 24
Shaft seal........................................................................................................................................................................................... 26
H1F Removal...............................................................................................................................................................................26
H1F Assembly.............................................................................................................................................................................26
Replace speed sensor................................................................................................................................................................... 28
H1F Speed Sensor Removal.................................................................................................................................................. 28
H1F speed sensor reassembly..............................................................................................................................................28
Loop flushing spool.......................................................................................................................................................................29
H1F Loop Flushing Spool Removal.................................................................................................................................... 29
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