Danfoss 51 Series Displacement Motors Manuals

Manuals and User Guides for Danfoss 51 Series Displacement Motors. We have 7 Danfoss 51 Series Displacement Motors manuals available for free PDF download: Service Manual, Repair Instructions, Service Kit Instructions

Danfoss 51 Series Service Manual (64 pages)

Bent Axis Motors

Brand: Danfoss | Category: Engine | Size: 4 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 Series Service Manual (48 pages)

Bent Axis Motors Two Position Controls

Brand: Danfoss | Category: Controller | Size: 1 MB

Table of Contents
3
Safety Precautions
5
Unintended Machine Movement
5
Flammable Cleaning Solvents
5
Fluid under Pressure
5
Personal Safety
5
Hazardous Material
5
Symbols Used in Danfoss Literature
6
Overview
7
General Instructions
7
Keep It Clean
7
Inspect for System Contamination
7
Replace the O-Rings and Gaskets
7
Lubricate All Moving Parts
7
Torque Procedure
7
Operation
8
Two-Position Controls
8
Control Options
8
Pressure Compensator Override (PCOR) Option
8
Brake Pressure Defeat (BPD)
9
Threshold Spring
11
Multifunction Block
11
Pressure Measurements
13
Port Locations and Gauge Installation
13
Adjustments
16
Threshold Setting
16
Adjusting Threshold Setting
16
PCOR Setting
16
PCOR Adjustment
16
Checking PCOR Setting on a Test Stand
17
Adjusting the PCOR Setting
17
Pressure Compensator Override (PCOR)
18
Repair
18
Disassembly
18
Inspection
18
Assembly
18
Multifunction Block
20
Repair
20
Disassembly
20
Inspection
21
Assembly
21
T1, T2, T3, T4, Ta, Th, Tm, Tn
22
Operation
22
TA Control
22
TH Control
22
T1, T2, T3, T4 Control
22
TM, TN Controls
22
N Module Option Codes
22
Overview
22
C0/C3 3
22
C2/C4
23
C7/C8
23
L5/L6
23
R5/R6
23
E7, E8, F7, F8
23
Schematic Diagrams
23
Repair
25
Removing Solenoid(S)
25
T1/T2/T3/T4 Controls
25
Disassembly
25
T1/T2/T3/T4/TA/TH/TM/TN Controls
25
Inspection
27
Assembly
27
Solenoid Assembly
28
T1/T2/T3/T4 Controls
28
N2 Controls
29
Operation
29
Functional Description
29
Repair
29
Disassembly
29
Inspection
30
Assembly
30
E1, E2, F1, F2 Controls
32
Operation
32
Functional Description
32
Repair
32
Disassembly
32
Assembly
33
Operation
35
Functional Description
35
Repair
35
Disassembly
36
Inspection
37
Assembly
37
U1, U2
39
Operation
39
Functional Description
39
Repair
39
Disassembly
39
Inspection
41
Assembly
41
Pc, Pd
42
Operation
42
Functional Description
42
PC Control
42
PD Control
42
Adjustment
42
PC, PD PCOR Adjuster Stop-Pin
42
Repair
43
Schematic Diagrams
43

Danfoss 51 Series Service Manual (40 pages)

Hydraulic Proportional Controls

Brand: Danfoss | Category: Controller | Size: 1 MB

Table of Contents
3
Safety Precautions
5
Symbols Used in Danfoss Literature
6
Overview
6
General Instructions
7
General Description
7
Pressure Measurements

10
- Port Locations and Gauge Installation
  10
Adjustments

11
- Threshold Setting
  11
  - Checking Threshold Setting
    11
  - Adjusting Threshold Setting
    11
- Pressure Compensator Override (PCOR) Setting
  12
Pcor

14
- Optional PCOR Housing
  14
  - Disassembly
    14
  - Inspection
    14
  - Assembly
    14
Multifunction Block

16
- Optional Multifunction Block
  16
  - Disassembly
    16
  - Inspection
    17
  - Assembly
    17
HZ, HA, HB, HE Controls

18
- Operation
  18
  - Functional Description
    18
  - HZ Control
    18
  - HA and HB Controls
    18
  - HE Control
    18
- Repair
  19
  - Disassembly
    19
  - Inspection
    20
  - Assembly
    20
HS Control

21
- Operation
  21
  - Functional Description
    21
- Repair
  21
  - Disassembly
    21
  - Inspection
    22
  - Assembly
    22
H1, H2, K1, K2 Controls

23
- Operation
  23
  - Functional Description
    23
  - Solenoid Valve
    23
- Repair
  23
  - Removing Solenoid Valve
    24
  - Disassembly
    24
  - Inspection
    24
  - Assembly
    24
  - Installing Solenoid
    24
HP Controls

25
- Operation
  25
  - Functional Description
    25
  - HP Control
    25
  - Shuttle Valve
    25
  - Connecting Pin
    25
- Repair
  26
  - Disassembly
    26
  - Inspection
    27
  - Assembly
    27
HC Controls

28
- Operation
  28
  - Functional Description
    28
  - Check Valve
    28
  - Shuttle Valve
    28
  - Connecting Pin
    28
- Repair
  28
  - Diassembly
    28
  - Inspection
    29
  - Assembly
    31
J1, J2, J3, J4 Controls

32
- Operation
  32
  - Functional Description
    32
  - Solenoid Valve
    32
- Repair
  33
  - Removing the Solenoid Valve
    33
  - Disassembly
    34
  - Inspection
    34
  - Assembly
    35
  - Installing the Solenoid Valve
    35
JA Control

36
- Operation
  36
  - Functional Description
    36
  - Signal Pressure
    36
- Repair
  36
  - Disassembly
    36
  - Inspection
    38
  - Assembly
    38

Danfoss 51 Series Service Manual (46 pages)

Electrohydraulic Controls

Brand: Danfoss | Category: Controller | Size: 1 MB

Table of Contents
3
Safety Precautions
5
Unintended Machine Movement
5
Flammable Cleaning Solvents
5
Fluid under Pressure
5
Personal Safety
5
Hazardous Material
5
Symbols Used in Danfoss Literature
6
Overview
6
General Instructions
7
Keep It Clean
7
Inspect for System Contamination
7
Replace the O-Rings and Gaskets
7
Lubricate All Moving Parts
7
Torque Procedure
7
General Description
7
Overview
7
Multifunction Block
7
Pressure Compensating Override (PCOR) Option
8
Brake Pressure Defeat (BPD) Option
8
Threshold and Ramp Springs
10
Pressure Measurements
11
Port Locations and Gauge Installation
11
Adjustments
12
Threshold Setting
12
Checking Threshold Setting
12
Adjusting Threshold Setting
12
Pressure Compensator Override (PCOR) Setting
13
PCOR Adjustment
13
Checking PCOR Setting on a Test Stand
14
Adjusting the PCOR Setting
14
Pcor
15
Optional PCOR Housing Repair
15
Disassembly
15
Inspection
15
Assembly
15
Multifunction Block
17
Optional Multifunction Block Repair
17
Disassembly
17
Inspection
18
Assembly
18
A7, L1, L2, L7 Controls
19
Operation
19
General Description
19
Proportional Solenoid
19
Check Valve
19
Schematic
21
Repair
21
Removing Solenoid
21
Disassembly
21
Inspection
23
Assembly
23
Solenoid Assembly
23
D7, D8, DA, DC Controls
24
Operation
24
General Description
24
Pressure-Reducing Valve
24
Schematic
25
Repair
26
Disassembly
26
Inspection
27
Assembly
27
EE Control
29
Operation
29
General Description
29
Repair
30
Disassembly
30
Inspection
31
Assembly
31
EP, EQ, ER, es Controls
33
Operation
33
General Description
33
Schematics
34
Definitions
35
Repair
35
Control Housing Disassembly
35
PCOR Disassembly
36
Multifunction Block Disassembly
37
Control Orifices
38
Inspection
39
Multifunction Block Assembly
39
Inspection
40
PCOR Assembly
40
Control Housing Assembly
41

Danfoss 51 Series Repair Instructions (36 pages)

Bent Axis Motors

Brand: Danfoss | Category: Engine | Size: 1 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 Series Service Manual (11 pages)

Bent Axis Motors

Brand: Danfoss | Category: Engine | Size: 8 MB

Danfoss 51 Series Service Kit Instructions (2 pages)

Pressure compensator over-ride

Brand: Danfoss | Category: Engine | Size: 0 MB

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