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Liebherr R914 Compact, R920 Tier 4F Compact Excavator Service Manual
Liebherr R914 Compact, R920 Tier 4F Compact Excavator Service Manual
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SUPPLIED AS DOWNLOADABLE LINK
R 914 Compact (4f) 89078 and up (Type 1511)
R 920 Compact 43057 and up (Type 1705)
Language: English
Publication: 12214599
Format: PDF
Liebherr R914 Compact, R920 Excavator Service Manual – 1522 Pages
Operator's manual – 330 Pages
Description
Liebherr R914 Compact, R920 Tier 4F Compact Excavator Service Manual
Excavator
Model :
R 914 Compact (4f) 89078 and up (Type 1511)
R 920 Compact 43057 and up (Type 1705)
Language: English
Publication: 12214599
Format: PDF
Liebherr R914 Compact, R920 Excavator Service Manual – 1522 Pages
Operator's manual – 330 Pages
Table of Content of the Service Manual:
Introduction
Technical data
Maintenance
Drive group
Cooling system
Working hydraulics
Hydraulic components
Steering System
Brake System
Electrical system
Transmission /Travel gearbox
Axles / Drive
Steel components – basic machine
Working attachment
Operator's cab, heating and air conditioning
Lubrication system
Slewing gearbox and slewing ring
Equipment / options
Diagnosis
This manual contains technical data, design and functional descriptions as well as instructions for the operation and the adjustment of machine settings. The document includes a number of drawings, functional schematics and detailed views of units and assemblies of Liebherr hydraulic excavators.
Manual Extract – Check for leak oil at the control blocks
The leak oil of a control spool is measured through the retracting and extending speeds of the pressurised hydraulic cylinder. The control spool is in neutral position and is connected to the hydraulic cylinder The volume of leak oil in the control block should be measured at a load pressure of 150 bar and a temperature of 50°C (in hydraulic tank).
Before checking the control block for leak oil, first check the secondary valves (visual inspection, with valve exchange, if this is required) and the operating cylinder (dummy), as the respective values refer only to leakage from the control spool in the control block.
To check the control block for leak oil from the control spool, connect a pressure sensor at the respective pressure line between the operating cylinder and the control block (use measuring equipment, if required).
SUPPLIED AS DOWNLOADABLE LINK
R 914 Compact (4f) 89078 and up (Type 1511)
R 920 Compact 43057 and up (Type 1705)
Language: English
Publication: 12214599
Format: PDF
Liebherr R914 Compact, R920 Excavator Service Manual – 1522 Pages
Operator's manual – 330 Pages
Description
Liebherr R914 Compact, R920 Tier 4F Compact Excavator Service Manual
Excavator
Model :
R 914 Compact (4f) 89078 and up (Type 1511)
R 920 Compact 43057 and up (Type 1705)
Language: English
Publication: 12214599
Format: PDF
Liebherr R914 Compact, R920 Excavator Service Manual – 1522 Pages
Operator's manual – 330 Pages
Table of Content of the Service Manual:
Introduction
Technical data
Maintenance
Drive group
Cooling system
Working hydraulics
Hydraulic components
Steering System
Brake System
Electrical system
Transmission /Travel gearbox
Axles / Drive
Steel components – basic machine
Working attachment
Operator's cab, heating and air conditioning
Lubrication system
Slewing gearbox and slewing ring
Equipment / options
Diagnosis
This manual contains technical data, design and functional descriptions as well as instructions for the operation and the adjustment of machine settings. The document includes a number of drawings, functional schematics and detailed views of units and assemblies of Liebherr hydraulic excavators.
Manual Extract – Check for leak oil at the control blocks
The leak oil of a control spool is measured through the retracting and extending speeds of the pressurised hydraulic cylinder. The control spool is in neutral position and is connected to the hydraulic cylinder The volume of leak oil in the control block should be measured at a load pressure of 150 bar and a temperature of 50°C (in hydraulic tank).
Before checking the control block for leak oil, first check the secondary valves (visual inspection, with valve exchange, if this is required) and the operating cylinder (dummy), as the respective values refer only to leakage from the control spool in the control block.
To check the control block for leak oil from the control spool, connect a pressure sensor at the respective pressure line between the operating cylinder and the control block (use measuring equipment, if required).
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