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H1P 069
Danfoss H1P 069 User Manual
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Fasteners and Plugs
P106 066E
T015
Filter mounting bolt
K400
Rear cover / auxiliary pad
mounting bolt
V020
Charge pressure
adjusting screw
V022
Charge pressure
locking nut
V010
Charge pressure
cartridge
L150
High pressure
relief valve
L150
High pressure
relief valve
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6
9
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H
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P
2
8
0
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Torque Chart
64 |
©
Danfoss | January 2021
AX152886482551en-000601
63
65
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
4
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Danfoss H1P 069 Specifications
General
Brand
Danfoss
Model
H1P 069
Category
Water Pump
Language
English
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