Liebherr Hydraulic excavator A 902 Operation and Maintenance Manual 2001 – PDF DOWNLOAD
FILE DETAILS:
Liebherr Hydraulic excavator A 902 Operation and Maintenance Manual 2001 – PDF DOWNLOAD
Language : English
Pages :102
Downloadable : Yes
File Type : PDF
Size: 17.9 MB
DESCRIPTION:
Liebherr Hydraulic excavator A 902 Operation and Maintenance Manual 2001 – 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 Hydraulic excavator A 902 Operation and Maintenance Manual 2001 – PDF DOWNLOAD
TECHNICAL DATA
Basic dimensions
Optional chassis (undercarriage) II
Transport dimensions Ill
GENERAL TECHNICAL DATA
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 9ear 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 902
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 0°C (32 °F) and above 24/24a
Starting the engine w/preheat at -12 °C ( 10 °F) and above 25/25a
Engine speed (RPM) control 25/25a
Engine shut off procedure 25/25a
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 29
ATTACHMENT OPERATION
Working position 30
Pilot (servo) valve functions 30
Pilot (servo) valve left (swing and stick) 30
Pilot (servo) valve right (boom/outriggers and bucket/clamshell) 31
Swing brake 32
Hydraulic hammer operation 33
Boom lock valve 33
Grapple/clamshell rotator operation
VENTILATION AND HEATING
Ventilation and heater operation
Sunroof (air vent) : ‘
Liebherr diesel engine – engine oil change 37
– cooling and fuel system 38
Bleed fuel system 39
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 43
Bleeding the stabilizer – oscillating axle 44
HYDRAULIC SYSTEM
Hydraulic oil cooling system 45
Tank-return oil filter, magnetic rod cleaning, filter change 45
Hydraulic system repairs 46
Suction hose from tank to pump 46
Bleeding the hydraulic pump 4 7
Hydraulic cylinders 4 7
Servo system 4 7
Servo filter 4 7
Cleaning/replacing of servo filter 4 7
COMPRESSED AIR SYSTEM
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 INTAKE 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 INSTALL ATTACHMENTS 62-70
INSPECTION (MAINTENANCE) SCHEDULE 71-73
ELECTRICAL SCHEMATIC
LUBRICATION CHART
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- This is the same manual used by the dealers to diagnose and troubleshoot your vehicle
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