Doosan DX225LC User manual

SP001647
Page 1
Travel Control Valve (with Damper)
SP001647
TRAVEL CONTROL VALVE (WITH DAMPER)
SP001647
Travel Control
Valve (with
Damper)
Edition 1

SP001647
Travel Control Valve (with Damper)
Page 2
MEMO

SP001647
Page 3
Travel Control Valve (with Damper)
Table of Contents
Travel Control Valve (with Damper)
Safety Precautions ............................................... 5
Applicable Models ................................................ 5
General Description.............................................. 7
Theory of Operation ........................................................ 7
Pressure Reducing Valve................................................ 8
Operating Theory of Damper Mechanism ....................... 9
Causes of Faults and Measures......................... 11
Parts List ....................................................................... 12
Specification .................................................................. 14
Torques ......................................................................... 14
Removal ............................................................. 15
Disassembly ....................................................... 16
Cleaning and Inspection (Wear Limits and
Tolerances)......................................................... 18
Reassembly........................................................ 19
Installation .......................................................... 24
Start-up Procedures ........................................... 25

SP001647
Travel Control Valve (with Damper)
Page 4
MEMO

SP001647
Page 5
Travel Control Valve (with Damper)
SAFETY PRECAUTIONS
APPLICABLE MODELS
The contents of this section apply to the following models and
serial number ranges.
CAUTION!
Follow all safety recommendations and safe shop practices
outlined in the front of this manual or those contained
within this section.
Always use tools and equipment that are in good working
order.
Use lifting and hoisting equipment capable of safely
handling load.
Remember, that ultimately safety is your own personal
responsibility.
MODEL SERIAL NUMBER RANGE
DX225LC 5433 and Up
DX225LCA 5167 and Up