Danfoss H1P 078 Manuals

Danfoss H1P 078 Manuals

Manuals and User Guides for Danfoss H1P 078. We have 3 Danfoss H1P 078 manuals available for free PDF download: Service Manual, Technical Information

Danfoss H1P 078 Service Manual

Danfoss H1P 078 Service Manual (68 pages)

Axial Piston Single Pumps

Brand: Danfoss | Category: Water Pump | Size: 9.67 MB

Table of Contents

Table of Contents
3
Hydrostatics Servicing Overview
5
General Servicing Instructions
5
Safety Precautions
6
General Description of H1 Family Hydrostatic Pumps
7
Design
7
H1 Single Pumps Closed Circuit Pictorial Diagram
9
H1 System Schematic
9
Operation
11
Pressure Limiter Valves
11
Pressure Limiter Sectional View
11
High Pressure Relief Valve (HPRV) and Charge Check Valve
11
Hprv/Charge Check Valve Sectional View
12
Charge Pressure Relief Valve (CPRV)
12
Bypass Function
12
System Schematic for Single Pump
13
Electrical Displacement Control (EDC)
13
EDC Operation
14
Hydraulic Displacement Control (HDC)
15
HDC Principle
15
HDC Operation
15
Manual Override (MOR)
17
Manual Displacement Control (MDC)
17
MDC Operation
18
MDC Torque
19
Neutral Start Switch (NSS)
19
Case Gauge Port M14
19
Operating Parameters
20
Input Speed
20
System Pressure
20
Servo Pressure
21
Charge Pressure
21
Charge Pump Inlet Pressure
21
Case Pressure
21
External Shaft Seal Pressure
22
Temperature
22
Viscosity
22
Technical Specifications
23
H1 Pumps General Specification
23
H1P 069-280 Physical Properties
23
Fluid Specification
24
Fluid and Filter Maintenance Recommendations
25
Filtration System
25
Pressure Measurements
27
Port Locations and Gauge Installation
27
H1P Ports Information
27
Initial Startup Procedures
29
Unintended Machine Movement
29
Start-Up Procedure
29
Troubleshooting
31
High Inlet Vacuum
31
Unintended Machine Movement
31
Fluid under Pressure
31
Electrical Troubleshooting
31
Integral Filter Bypass
31
Neutral Difficult or Impossible to Find
32
Transmission Operates Normally in One Direction Only
32
System Operating Hot
32
System will Not Operate in Either Direction
33
System Noise or Vibration
33
Sluggish System Response
33
Adjustments
35
Standard Procedures
35
Charge Pressure Relief Valve Adjustments
35
Pressure Limiter Adjustment
36
Engaging the Bypass Function
38
Displacement Limiter Adjustment for Single Pumps
38
Control Neutral Adjustment
39
Mechanical Neutral Adjustment
41
Unintended Machine Movement
41
Minor Repair
44
Control Solenoids Repair
46
MDC Control Repair
47
Angle Sensor on EDC Repair
50
EDC with Angle Sensor Repair
51
Automotive Control Repair
52
Shaft, Seal and Bearing Repair
56
External Filter Repair
58
Filter Bypass Valve and Switch Repair
59
Charge Pump Repair (Removable Auxiliary Pad)
59
Charge Pump Repair (Integrated Auxiliary Pad)
60
High Pressure Relief Valve Repair
62
Charge Pressure Relief Valve Repair
63
Pressure Limiter Repair
63
Torque Chart
65
Fasteners and Plugs
65
Fastener Size and Torque Chart
66
Plug Size and Torque Chart
67

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Danfoss H1P 078 Technical Information

Danfoss H1P 078 Technical Information (68 pages)

Axial Piston Single Pumps

Brand: Danfoss | Category: Water Pump | Size: 10.51 MB

Table of Contents

Danfoss H1P 078 Service Manual

Danfoss H1P 078 Service Manual (67 pages)

Axial Piston Single Pumps

Brand: Danfoss | Category: Water Pump | Size: 12.52 MB

Table of Contents

Table of Contents
3
Hydrostatics Servicing Overview
5
General Servicing Instructions
5
Safety Precautions
6
Symbols Used in Danfoss Literature
7
General Description of H1 Family Hydrostatic Pumps
7
Design
8
H1 Single Pumps Closed Circuit Pictorial Diagram
10
H1 System Schematic
10
Operation
12
Pressure Limiter Valves
12
Pressure Limiter Sectional View
12
High Pressure Relief Valve (HPRV) and Charge Check Valve
12
Hprv/Charge Check Valve Sectional View
13
Charge Pressure Relief Valve (CPRV)
13
Bypass Function
13
System Schematic for Single Pump
14
Electrical Displacement Control (EDC)
14
EDC Operation
15
Manual Override (MOR)
16
Manual Displacement Control (MDC)
16
MDC Operation
17
MDC Torque
18
Neutral Start Switch (NSS)
18
Case Gauge Port M14
18
Operating Parameters
19
Input Speed
19
System Pressure
19
Servo Pressure
20
Charge Pressure
20
Charge Pump Inlet Pressure
20
Case Pressure
20
External Shaft Seal Pressure
21
Temperature
21
Viscosity
21
Technical Specifications
22
H1 Pumps General Specification
22
H1P 069-280 Physical Properties
22
Fluid Specification
23
Fluid and Filter Maintenance Recommendations
24
Filtration System
24
Pressure Measurements
26
Port Locations and Gauge Installation
26
H1P Ports Information
26
Initial Startup Procedures
28
Unintended Machine Movement
28
Start-Up Procedure
28
Troubleshooting
30
High Inlet Vacuum
30
Unintended Machine Movement
30
Fluid under Pressure
30
Electrical Troubleshooting
30
Integral Filter Bypass
30
Neutral Difficult or Impossible to Find
31
Transmission Operates Normally in One Direction Only
31
System Operating Hot
31
System will Not Operate in Either Direction
32
System Noise or Vibration
32
Sluggish System Response
32
Adjustments
34
Standard Procedures
34
Charge Pressure Relief Valve Adjustments
34
Pressure Limiter Adjustment
35
Engaging the Bypass Function
37
Displacement Limiter Adjustment for Single Pumps
37
Control Neutral Adjustment
38
Mechanical Neutral Adjustment
40
Unintended Machine Movement
40
Minor Repair
43
Control Solenoids Repair
45
MDC Control Repair
46
Angle Sensor on EDC Repair
49
EDC with Angle Sensor Repair
50
Automotive Control Repair
51
Shaft, Seal and Bearing Repair
55
External Filter Repair
57
Filter Bypass Valve and Switch Repair
58
Charge Pump Repair (Removable Auxiliary Pad)
58
Charge Pump Repair (Integrated Auxiliary Pad)
59
High Pressure Relief Valve Repair
61
Charge Pressure Relief Valve Repair
62
Pressure Limiter Repair
62
Torque Chart
64
Fasteners and Plugs
64
Fastener Size and Torque Chart
65
Plug Size and Torque Chart
66

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