Danfoss 51-1 Series Displacement Motor Manuals

Manuals and User Guides for Danfoss 51-1 Series Displacement Motor. We have 3 Danfoss 51-1 Series Displacement Motor manuals available for free PDF download: Service Manual, Repair Instructions

Danfoss 51-1 Series Service Manual (64 pages)

Bent Axis Motors

Brand: Danfoss | Category: Engine | Size: 4.68 MB

Table of Contents
3
March
5
Overview
5
Ordering Replacement Parts and Service
5
Safety Precautions
5
Symbols Used in Danfoss Literature
6
General Instructions
7
Variable Displacement Motors
7
Series 51-1 Motors
8
Closed Circuit
9
Open Circuit
10
Shafts
11
Operation

12
- Loop Flushing
  12
- Displacement Limiters
  13
- Mounting Configurations
  14
- Speed Sensors
  16
- Controls
  17
  - Overview
    17
- Two-Position Controls
  17
- Pressure-Compensator Controls
  19
- Proportional Controls
  20
Technical Specifications

21
- General Specifications
  21
- Technical Data
  21
- Fluid Specifications
  22
Pressure Measurements

23
- Required Tools
  23
- Port Locations and Gauge Installation
  23
Fluid and Filter Maintenance

26
- Fluid and Filter Recommendations
  26
  - Hazardous Material
    26
Initial Startup Procedures

27
- Procedure
  27
Troubleshooting

29
- Sluggish System
  29
- System Operating Hot
  29
- Excessive Noise or Vibration
  29
- Motor Operates Normally in One Direction Only
  30
- Improper Output Speed
  30
- Low Output Torque
  30
Adjustments

32
- Overview
  32
- Minimum Displacement Limiter
  33
  - Adjusting Minimum Displacement
    33
- Maximum Displacement Limiter
  35
  - Series 51 Motors
    36
  - Series 51-1 Motors
    36
- Speed Sensor Installation and Adjustment
  37
  - DIN and SAE Flange Units
    37
  - Cartridge Units
    39
Minor Repair

40
- Shaft Seal Replacement
  40
  - SAE and DIN Flanged Motors
    40
    
    Disassembly
    40
    
    Inspection
    40
    
    Reassembly
    40
  - Cartridge Flanged Motors
    41
    
    Disassembly
    41
    
    Inspection
    41
    
    Reassembly
    42
- Loop Flushing Shuttle Valve
  42
  - Disassembly
    42
  - Inspection
    43
  - Reassembly
    43
- Charge Relief Valve
  44
  - Overview
    44
  - Poppet Style (Older Production)
    44
    
    Disassembly
    44
    
    Inspection
    44
    
    Reassembly
    44
  - Orificed Style
    45
    
    Disassembly
    45
    
    Inspection
    46
    
    Reassembly
    46
  - Defeat Plug
    46
    
    Disassembly
    46
- Maximum Angle Stop - Series 51 Motors
  47
  - Disassembly
    47
  - Inspection
    48
  - Reassembly
    49
- Maximum Angle Stop - Series 51-1 Motors
  49
  - Disassembly
    49
  - Inspection
    50
  - Reassembly
    50
- Minimum Angle Adjustment Screw
  51
  - Disassembly
    51
  - Inspection
    51
  - Reassembly
    52
- 4-Way Valve and Threshold Springs
  52
  - 4-Way Valve
    52
    
    Disassembly
    52
    
    Inspection
    54
    
    Reassembly
    54
  - Threshold Adjustment Screw and Springs
    54
    
    Disassembly
    54
    
    Inspection
    56
    
    Reassembly
    57
  - Assembling the 4-Way Valve
    57

Danfoss 51-1 Series Repair Instructions (36 pages)

Bent Axis Motors

Brand: Danfoss | Category: Engine | Size: 1.63 MB

Table of Contents
3
Overview
4
General Instructions
4
- Remove the Unit
  4
- Keep It Clean
  4
- Lubricate Moving Parts
  4
- Replace All O-Rings and Gaskets
  4
- Secure the Unit
  5
Safety Precautions
5
Symbols Used in Danfoss Literature
6
Section Diagram
7
Disassembly

8
- Endcap
  8
- Rotating Components
  9
- Shaft Removal (SAE or DIN)
  10
- Shaft Removal (Cartridge)
  11
- Endcap Disassembly
  12
  - 060 Frame
    12
  - 080 Frame
    13
  - All Frame Sizes
    14
  - 51-1 Endcap
    14
Inspection

16
Assembly

19
- Endcap Assembly
  19
  - All Frame Sizes
    19
  - 060 Frame
    19
  - 110-250 Frames
    20
  - All Frame Sizes
    21
- Shaft and Mounting Flange Assembly
  22
  - SAE/DIN Flange
    22
  - Cartridge Flange
    23
- Cylinder Block and Synchronizing Shaft
  25
  - Synchronizing Shaft and Rollers
    25
  - Cylinder Block
    27
- Bearing Plate and Valve Segment
  29
  - Bearing Plate
    29
- Endcap Installation
  30

Danfoss 51-1 Series Service Manual (11 pages)

Bent Axis Motors

Brand: Danfoss | Category: Engine | Size: 8.94 MB

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Danfoss 51-1 Series Service Manual (64 pages)

Table of Contents

Operation

Technical Specifications

Pressure Measurements

Fluid and Filter Maintenance

Initial Startup Procedures

Troubleshooting

Adjustments

Minor Repair

Danfoss 51-1 Series Repair Instructions (36 pages)

Table of Contents

Disassembly

Inspection

Assembly

Danfoss 51-1 Series Service Manual (11 pages)

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