CAT Shield Roof Support 1295 2743-2×3833-1750 Operation and Maintenance Manual (7420 247 000 BA 00) – PDF DOWNLOAD

Table of content
1 About this manual
Before starting work 1 3
Persons for whom the operating manual is intended 1 3
Purpose of this operating manual 1 4
Signs and symbols used 1 4
2 Your safety
Personnel 2 3
Operation 2 3
Installation and repairs 2 4
Operating conditions 2 5
Intended use 2 5
Unauthorized use 2 5
Safety instructions 2 6
3 Storage and transport
Storage 3 3
Storing the equipment 3 3
Storing used equipment 3 4
Transport 3 4
Load units, dimensions and weights 3 4
Before transport 3 4
Transport of the face shield 3 7
Transport safety device 3 8
Transport safety device, relay bar assembly 3 8
4 Installation
Preassembly of the shield units 4 3
Installation of the shield units 4 3
Pressure equalization of the electronic control system 4 5
Supply connections for auxiliary supply 4 6
Requirements for the face hydraulic system 4 9
Water spraying system requirements 4 10
Commissioning 4 11
To be observed prior to commissioning 4 11
How to put the support into operation 4 13
Anticorrosion protection of hydraulic components 4 13
Caterpillar Global Mining Europe GmbH, Lünen 2012
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Table of content
Shield support 1295/2743-2×3833-1750
5 Operation
Requirements 5 3
Operating conditions 5 3
Safety requirements 5 6
Operation of the shield support 5 9
Work safety 5 15
Overview of the shield components 5 16
Arrangement of the shield components 5 16
Overview of shield hydraulics 5 18
Functions of the HP ball valves on the shield 5 18
HP ball valve versions 5 20
Arrangement of the hydraulic components on the face shield
5 21
Control units 5 29
Repair and emergency operation 5 31
Shield functions 5 32
Plug with pressure relief 5 35
Maintenance 5 36
Special measures 5 36
Daily maintenance 5 37
Weekly maintenance 5 38
Every six months 5 38
Regularly scheduled damage assessment 5 38
Troubleshooting 5 39
Instructions for troubleshooting 5 39
Fault localization 5 39
3/2-way or pilot valve 5 42
Piloted check valves 5 42
Internal bypass inside the prop 5 43
Pressure relief valve defective 5 43
Defective or clogged filter 5 43
6 Technical data
Description 6 3
Main subassemblies 6 4
Main dimensions 6 6
Skid 6 7
Relay bar assembly 6 9
Canopy 6 11
Caving shield 6 13
Technical data of steel structure, face shield 6 14
Hydraulic cylinders 6 15
Hydraulic prop, two-stage (Z1) 6 15
Design of hydraulic cylinders 6 18
Lifting cylinder (Z2) 6 19
Stabilizing cylinder (Z3) 6 20
Caterpillar Global Mining Europe GmbH, Lünen 2012
Table of content
Doc No : 7420 249 000 BA 00 SSSU / 01
Shifting ram (Z4) 6 21
Pressure relief valves 6 22
Angles of inclination of the canopy 6 24
Permissible media 6 25
Hydraulic fluids 6 25
Quality of the process water 6 27
Greases and lubricating pastes 6 29
Tightening torques 6 31
Screws and bolts with ISO metric thread 6 31
7 For your information
Standards and directives 7 3
Applied standards and directives 7 3
Identification of the shield 7 5
Name plate 7 5
Shield number 7 5
Caterpillar Global Mining Europe GmbH, Lünen 2012
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