Liebherr Wheeled Excavators A912 Operation and Maintenance Manual – PDF DOWNLOAD
FILE DETAILS:
Liebherr Wheeled Excavators A912 Operation and Maintenance Manual – PDF DOWNLOAD
Language : English
Pages : 114
Downloadable : Yes
File Type : PDF
Size: 19.1 MB
DESCRIPTION:
Liebherr Wheeled Excavators A912 Operation and Maintenance Manual – PDF DOWNLOAD
INTRODUCTION
- This manual has been prepared to acquaint you with the operation and maintenance of your Liebherr machine. It contains important safety information, as well as valuable reference data such as capacities and tightening torques. Unless specific values are given, all threaded connections should be tightened according to the torque charts.
- The descriptions in this manual are brief and precise. They are supported by photographs and drawings. All information is intended to simplify maintenance procedures.
- WE URGE YOU TO READ THIS MANUAL CAREFULLY. Correct maintenance procedures will give the machine a long service life. Before starting a job, you must read the applicable section of the manual and know the maintenance procedure to be performed. It is essential to keep the machine, parts, tools, and your working area clean and orderly. Following the recommendations in this manual will help make your Liebherr equipment profitable, safe, and trouble-free.
- To determine service intervals, use the hour meter. However, calendar intervals (daily, weekly, etc.) sometimes provide a more convenient method of scheduling required maintenance.
- Under severe conditions such as extremely high or low temperatures, dusty or wet job sites, etc., more frequent maintenance than indicated by the schedule may be necessary.
- Some drawings and photographs in this manual may show details that are different from your machine. Improvements in design may cause changes in your machine not reflected in this manual. All manuals are reviewed and updated periodically to include such design changes.
- Should you have any questions regarding the information in this manual or your Liebherr machine, please contact your Liebherr dealer. He knows your equipment best and is interested in your complete satisfaction.
IMAGES PREVIEW OF THE MANUAL:
TABLE OF CONTENTS:
Liebherr Wheeled Excavators A912 Operation and Maintenance Manual – PDF DOWNLOAD
TECHNICAL DATA
Basic dimensions
Optional chassis (undercarriage) II
Transport dimensions Ill
GENERAL TECHNICAL DAT A
Engine:
Hydraulic system:
Air cleaner, coupling 1
Hydraulic pump, control valves 1
Servo control, servo pump 1
Hydraulic oil tank, hydraulic oil – cooling system 1
Hydraulic oil filter 2
Compressed air system 2
Swing gear 2
Electrical system · 2
Heater 2
Fuel system 2
Rotary connection 2
Travel drive: Brakes, tires, travel speed 2
CAPACITIES 3
FILTER ELEMENTS 4
V -BELTS 4
GENERAL MACHINE DESCRIPTION
Engine, hydraulic system 5
Hydr oil cooling, fuel system, swing drive compressed air system, steering 6
Travel drive, travel brakes, operators cab 7
Ventilation & heating, covers & sound suppression, uppercarriage, swing lock 8
SAFETY INFORMATION – Europaeische version ; 9-10
U S SAFETY INFORMATION 11-17
OPERATING THE A 912
BEFORE STARTING THE ENGINE
Engine oil level, radiator (coolant level), cooling circuit, electrical system 19
V-belt tension 19
Fuel system, air filter, compressed air system, hydraulic oil level 20
CONTROLS AND INSTRUMENTATION 21-23
DESCRIPTION OF CONTROLS, SYMBOLS, GAUGES – WITH LIEBHERR ENGINE 24/25
DESCRIPTION OF CONTROLS, SYMBOLS, GAUGES – WITH DEUTZ ENGINE 24a/25a
Starting the engine 24/24a
Key positions · 24/24a
Energizing the electrical system (key position 1) 24/24a
Starting the engine at O °C (32 °F) and above 24/24a
Starting th e engine w /preheat at – 1 2 °C ( 1 0 °F) and above
Eflgine speed (RPM) control
Engine shut off procedure
OPERATORS SEAT
Seat adjustment 26
TRAVEL FUNCTIONS
Parking brake function 27
Gear selection – on/off road 27
Travel forward/reverse selection 27
Brake system 28
Uppercarriage (swing) lock 28
Oscillating axle stabilizer 29
Outriggers/dozer blade 29
Emergency flasher 29
Servo ciruit cut off during on road travel
A TT A CHM ENT OPERATION
Working position
Pilot (servo) valve functions
Pilot (servo) valve left (swing and stick)
Pi lot (servo) valve right (boom/outriggers and bucket/clamshell)
Hydraulic hammer operation 33
Boom lock valve 33
Grapple/clamshell rotator operation
VENTILATION AND HEATING
Ventilation and heater operation
Sunroof (air vent)
MAINTENANCE RECOMMENDATIONS
Liebherr diesel engine – engine oil change
– cooling and fuel system
Bleed fuel system
Deutz diesel engine – see Deutz Operators & Maintenance Manual 40
Swing – and travel brakes, wheel cylinders 41
Bleeding the brake system 41
Parking brake 42
Swing gear, axles, king pins
Bleed ing the stabilizer – oscillating axle
HYDRAULIC SYSTEM
Hydraulic oil cooling system
Tank-return oil filter, magnetic rod cleaning , filter change
Hydraulic system repairs
Suction hose from tank to pump
Bleeding the hydraulic pump
Hydraulic cyl inders
Servo system
Servo filter
Cleaning/ replacing of servo filter
System pressure, pressure regulator maintenance 48
Dual air pressure gauge, tire inflation 48
Tire pressures, antifreeze pump 48
Recommendations for summer/winter ·operation 49
Drain air tanks 49
Air compressor (Deutz engine only) 49
Check and/or adjust V-belts, replace air compressor 49
ENGINE AIR INT AKE SYSTEM
Engine air filter maintenance 50
Dry cleaning the primary filter element 51
Wet cleaning the primary filter element 52
Safety element 52
ELECTRICAL SYSTEM
Battery maintenance, fuse replacement 53
HEATING SYSTEM
System maintenance 54
SWING RING LUBRICATION
Lubrication, maintenance, inspection 54
REPLACEMENT OF WEAR AND TEAR ITEMS 55
ON ROAD TRAVEL 55
PRESERVATION OF PISTON ROAD 56
TRANSPORTING THE EXCAVATOR 56
FUSE BOXES
Instrument panel 57
Junction box 58
OVERLOAD WARNING DEVICE 59-61
REMOVE AND INST ALL ATTACHMENTS 62- 70
INSPECTION (MAINTENANCE) SCHEDULE 71-73
ELECTRICAL SCHEMATIC
LUBRICATION CHART
VIDEO PREVIEW OF THE MANUAL:
PLEASE NOTE:
- This is not a physical manual but a digital manual – meaning no physical copy will be couriered to you. The manual can be yours in the next 2 mins as once you make the payment, you will be directed to the download page IMMEDIATELY.
- This is the same manual used by the dealers inorder to diagnose your vehicle of its faults.
- Require some other service manual or have any queries: please WRITE to us at [email protected]
S.M
