Table Of Contents - Danfoss Series 20 Service Manual And Repair Instructions

Axial piston

Hide thumbs Also See for Series 20:

Service manual (36 pages)

Table Of Contents

Table of Contents

Service Manual and

Repair Instructions

Contents

General Information

Model Code

Recommended Tools and

Disassembly and Assembly

Axial Piston Motors Series 20

Introduction ................................................................................................................................................................................ 2

Description .................................................................................................................................................................................. 2

Model Code ................................................................................................................................................................................. 4

Tools for Minor Repairs and Unit Maintenance ............................................................................................................. 5

Additional Tools for Complete Stripping of Units ......................................................................................................... 5

Measurement Instruments .................................................................................................................................................... 5

Troubleshooting, Gauge Installation and Information ............................................................................................... 6

Preconditions for Trouble-free Operation ....................................................................................................................... 7

Cleanliness ............................................................................................................................................................................ 7

Preconditions for trouble-free operation (continued) ................................................................................................ 8

Plumbing Installa tion (Variable Displacement Pump - Fixed Displacement Motor) ....................................... 9

System Circuit Description .................................................................................................................................................. 10

Inlet Filter ................................................................................................................................................................................... 11

Changing the oil ...................................................................................................................................................................... 11

Leak Test ..................................................................................................................................................................................... 11

Cleanliness ................................................................................................................................................................................. 11

Checking the oil level ............................................................................................................................................................ 11

Recommended oils................................................................................................................................................................. 11

Transmission Operates in one Direction Only .............................................................................................................. 12

System Response is sluggish .............................................................................................................................................. 12

System Operating hot ........................................................................................................................................................... 13

System will not operate in either direction ................................................................................................................... 13

Inspection Instructions ......................................................................................................................................................... 14

Checking the high pressure relief valve ................................................................................................................... 14

Preparation for Assembly .................................................................................................................................................... 15

Checking the shuttle valve ............................................................................................................................................ 15

Mounting block ................................................................................................................................................................. 15

Sectional View .......................................................................................................................................................................... 16

Axial piston fixed displacement motor ..................................................................................................................... 16

Exploded View ......................................................................................................................................................................... 17

Minor Repairs ............................................................................................................................................................................ 18

Changing the shaft seal (disassembly)...................................................................................................................... 18

Changing the shaft seal (assembly) ........................................................................................................................... 19

Changing the valve manifold assembly ................................................................................................................... 20

Repair the manifold valve assembly .......................................................................................................................... 21

Installation Torque Values..............................................................................................................................................22

Changing the valve and bearing plate (disassembly) .........................................................................................23

Changing the valve and bearing plate (assembly) ............................................................................................... 24

Changing the cylinder block kit, the swash plate and the motor shaft (disassembly) ...........................25

Changing the cylinder block kit, the swash plate and the motor shaft (assembly) ................................. 27

L1003443 • Rev BA • Jun 2014