Danfoss H1B 060,080,110,160,210,250 Motor Service Manual 50940482 – PDF DOWNLOAD

Danfoss H1B 060,080,110,160,210,250 Motor Service Manual 50940482 – PDF DOWNLOAD

FILE DETAILS:

Danfoss H1B 060,080,110,160,210,250 Motor Service Manual 50940482 – PDF DOWNLOAD

Language : English
Pages : 68
Downloadable : Yes
File Type : PDF
Size: 5.47 MB

IMAGES PREVIEW OF THE MANUAL:

DESCRIPTION:

Danfoss H1B 060,080,110,160,210,250 Motor Service Manual 50940482 – PDF DOWNLOAD

Introduction:

Overview:

This manual includes information for the installation, maintenance, and minor repair of the H1 bent-axis
motor. It includes a description of the unit and its individual components, troubleshooting information,
and minor repair procedures.
Performing minor repairs may require removal from the vehicle/machine. Thoroughly clean the unit
before beginning maintenance or repair activities. Since dirt and contamination are the greatest enemies
of any type of hydraulic equipment, follow cleanliness requirements strictly. This is especially important
when changing the system filter and when removing hoses or plumbing.
A worldwide network of Danfoss Global Service Partners is available for major repair. Danfoss trains and
certifies Global Service Partners on a regular basis.
Warranty:
Performing installation, maintenance, and minor repairs according to the procedures in this manual will
not affect your warranty. Major repairs requiring the removal of a unit’s rear cover voids the warranty
unless done by a Danfoss Global Service Partner.

TABLE OF CONTENTS:

Danfoss H1B 060,080,110,160,210,250 Motor Service Manual 50940482 – PDF DOWNLOAD

Introduction
Overview 5
Warranty 5
General instructions 5
Safety precautions 6
Symbols used in Danfoss literature 7
H1 general information
Design of H1 bent axis motor 8
General description 10
H1 pictorial diagram 11
H1 system schematic 12
Technical specifications
General specifications 13
Physical properties 13
Operating parameters 14
H1B speed range diagrams for open and closed circuit 15
H1B pressure requirements for open and closed circuit 16
Open circuit requirements 19
Fluid specifications 20
Determination of nominal motor sizes 20
Operation
Shaft rotation direction 21
Loop flushing shuttle spool 22
Loop flushing relief valve 22
Speed sensor 23
Displacement limiter 25
Operating parameters
Output speed 26
System pressure 26
Case pressure 27
External shaft seal pressure 27
Temperature 27
Fluid and filter maintenance
Fluid and filter recommendations 28
Pressure measurements
Port locations and gauge installation 29
Initial startup procedures
Procedure 31
Troubleshooting
Overview 33
Electrical troubleshooting 33
Sluggish operation 33
System operating hot 33
Excessive noise or vibration 34
Motor operates normally in one direction only 34
Improper output speed 34
Low output torque 35
Required tools and standard procedures
Adjustments
Minimum displacement limiter 37
Optional threshold adjustment – electric proportional controls 38
Optional threshold adjustment – hydraulic proportional controls 39
Pressure compensator OVERRIDE (PCOR) adjustment 40
PCOR adjustment for all except P1/P2 40
Service Manual H1B 060/080/110/160/210/250 Bent Axis Motors
Contents
11024924 • Rev 0500 • December 2015 3
Brake pressure defeat option 42
PCOR adjustment for P1/P2 controls 42
Minor repair
Shaft seal 43
Electric proportional solenoid replacement 44
Hydraulic proportional actuator replacement 45
Control module replacement 46
Electric proportional control module 47
Hydraulic proportional control module 49
Electric two-position control module 50
Hydraulic two-position control module 52
Hydraulic two-position control module with PCOR 53
Hydraulic two-position control module with PCOR and hydraulic BPD 54
Maximum displacement limiter two-position controls 56
Servo piston cover – proportional control 56
Replace speed sensor 58
Loop flushing spool 59
Loop flushing charge relief valve 60
Minimum Displacement limiter 62
Torque chart
Fasteners and plugs 63
Fastener size and torque chart 63
Plug size and torque chart 64