3
Series 90
Contents
Contents
Introduction ......................................................................................................................................................................... 2
Use of this Manual ........................................................................................................................................................................................ 2
Safety Precautions ........................................................................................................................................................................................ 2
Functional Description ....................................................................................................................................................... 5
General Description and Cross Sectional Views ......................................................................................................................................... 5
Variable Displacement Pumps ................................................................................................................................................................ 5
Fixed Displacement Motor ..................................................................................................................................................................... 5
Variable Displacement Motor .................................................................................................................................................................. 6
The System Circuit ....................................................................................................................................................................................... 7
The Basic Closed Circuit ........................................................................................................................................................................ 7
Case Drain and Heat Exchanger ........................................................................................................................................................... 7
Common Features of Pumps and Motors .................................................................................................................................................... 8
End Caps and Shafts ............................................................................................................................................................................. 8
Speed Sensors ....................................................................................................................................................................................... 8
Pump Features ............................................................................................................................................................................................. 9
Charge Pump .......................................................................................................................................................................................... 9
Charge Relief Valve ................................................................................................................................................................................. 9
Multi-Function Valves .............................................................................................................................................................................. 9
Pressure Limiter and High Pressure Relief Valves ....................................................................................................................... 10
System Check Valves .................................................................................................................................................................... 10
Bypass Valves ................................................................................................................................................................................ 10
Displacement Limiters .......................................................................................................................................................................... 11
Auxiliary Mounting Pads ....................................................................................................................................................................... 11
Filtration Options ................................................................................................................................................................................... 11
Pressure Override (POR) - 180 Frame Size Only ............................................................................................................................. 12
Pump Control Options .......................................................................................................................................................................... 13
Manual Displacement Control (MDC) ........................................................................................................................................... 13
Hydraulic Displacement Control (HDC) ........................................................................................................................................ 13
Electric Displacement Control (EDC) ............................................................................................................................................ 14
Automotive Control (FBA II B) ....................................................................................................................................................... 14
3-Position (FNR) Electric Control .................................................................................................................................................. 14
Motor Features ........................................................................................................................................................................................... 15
Motor Loop Flushing Valve and Charge Relief Valve ........................................................................................................................... 15
Variable Motor Displacement Limiters .................................................................................................................................................. 15
Variable Motor Controls ........................................................................................................................................................................ 16
Hydraulic 2-Position Control .......................................................................................................................................................... 16
Electric 2-Position Control .............................................................................................................................................................. 16
Technical Specifications .................................................................................................................................................. 17
General Specifications ................................................................................................................................................................................ 17
Circuit Diagrams ......................................................................................................................................................................................... 17
Hydraulic Parameters ................................................................................................................................................................................. 18
Size Specific Data ....................................................................................................................................................................................... 19
Pressure Measurement ................................................................................................................................................... 20
Required Tools ............................................................................................................................................................................................ 20
Port Locations and Pressure Gauge Installation ....................................................................................................................................... 20
Variable Pump ....................................................................................................................................................................................... 20
Fixed Motor ........................................................................................................................................................................................... 23
Variable Motor ....................................................................................................................................................................................... 24
Initial Start-Up Procedure ................................................................................................................................................ 25
Fluid and Filter Maintenance ........................................................................................................................................... 26
Troubleshooting ................................................................................................................................................................ 27
"NEUTRAL" Difficult or Impossible to Find ................................................................................................................................................. 27
System Operating Hot ................................................................................................................................................................................ 27
Transmission Operates Normally in One Direction Only .......................................................................................................................... 28
System Will Not Operate in Either Direction .............................................................................................................................................. 28
Low Motor Output Torque ........................................................................................................................................................................... 29
Improper Motor Output Speed .................................................................................................................................................................... 29
Excessive Noise and/or Vibration .............................................................................................................................................................. 30
System Response is Sluggish .................................................................................................................................................................... 30
Summary of Contents for DPT60
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Page 210: ...Warranty DX EMISSIONS EPA 19 12DEC12 2 2 TS1721 UN 15JUL13 90 6 032015 PN 163 ...
Page 218: ...Warranty DX EMISSIONS CARB 19 01AUG14 8 8 RG26036 UN 24JUN14 90 14 032015 PN 171 ...
Page 219: ...Warranty 90 15 032015 PN 172 ...
Page 225: ...Engine Registration IBC 2 032015 PN 178 ...
Page 228: ...Engine Registration IBC 5 032015 PN 181 ...
Page 229: ...Engine Registration IBC 6 032015 PN 182 ...
Page 230: ...Axial Piston Pumps and Motors Service Manual Series 90 ...
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Page 373: ...www dexteraxle com OPERATION MAINTENANCE SERVICE MANUAL 600 8 000 lb Axles Related Components ...
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