Bobcat compact Excavator X119 Service Manual 6570547 – PDF DOWNLOAD

Description

Bobcat compact Excavator X119 Service Manual 6570547 – PDF DOWNLOAD

FILE DETAILS:

Bobcat compact Excavator X119 Service Manual 6570547 – PDF DOWNLOAD

Language : English
Pages :92
Downloadable : Yes
File Type : PDF
Size:8.91 mb

DESCRIPTION:

Bobcat compact Excavator X119 Service Manual 6570547 – PDF DOWNLOAD

FOREWORD

This manual provides all necessary information for carrying out specific repair work on hydraulic
excavators. The manual is intended essentially tor personnel responsible for repairing and Servicing
this equipment.

TABLE OF CONTENTS:

Bobcat compact Excavator X119 Service Manual 6570547 – PDF DOWNLOAD

SECTION A : DIESEL ENGINE
01 ENGINE IDENT1F!CAT!ON
ENGINE DESCRIPTION MAIN
TECHNICAL CHARACTERISTICS OF THE ENG!NE
POWER OUTPUT DIAGRAM ______________________ _
MALFUNCTIONS CAUSES AND REMED!E,.,.__ ___________ ADJUSTMENTS
1. Adjustmeni of rocker arm clearance
2. Checking and adjustment o! iniection time
3. Adjustment of engine rolalion speed
07 CHECKING AND REPAIRING THE ENGIN…..
1. Valve seat
2. Valves
3. Valve spring
4. Cylinder head
4.1 Valve guide
4.2 Rocker arms and rocker shaft
4.3 Reassembly
4.3. 1 Cylinder head
4.3.2 Rocker shafts
4.3.3 Intake/exhaust manifolds
5. Cylinder block
5.1 Removal of piston and rods
5.2 Removal of rings and pistons
5.3 Reassembly of piston rod assemblies
08 ENGINE LUBRICATION CIRCUIT
1 . Description
09 · FUEL CIRCUIT
1. Description of circuit
2. Electric fuel pump
3. Injector
4. Checking diesel fuel pump rate
5. Checking an injection atomiser
5.1 Checking the pressure
5.2 Checking atomatisation
5.3 Checking sealing
iO COMPRESSION
1. Checking the compression for each cylinder
COOUNG CIRCUIT 36
1 . Description 36
2 Checks 36
2. i Water pump 36
2.2 Thermostat 36
2.3 Heat switch 36
2.4 Fan belt 36 SECTION B : ELECTRICAL EOUIPEMENT 39
01 ELECTRICAL CIRCUIT 41
1. Schematic diagram 41
02 ST ARTER MOTOR 42
1. Definition 42
2. General checks 42
3. Operating tests 42
4. Checking the brusch contacts 42
5. Checking the armature 42
6. Checking the commutator 42
7. Checking the excitation coils 42
8. Checking the excitation circuits 42
9. Checking the drive pinion 45
10. Checking clearance of starter 45
11. Checking the relay 45
03 · DYNAMO 46
1. Definition 46
2. Description 46 SECTION C : HYDRAULIC SYSTEM 49
01 DESCRIPTION OF HYDRAULIC SYSTEM 51
1. Hydraulic system 51
02 HYDRAULIC CIRCUIT 52
1. Schematic diagram 52
2. Detailed schema tic diagram 55
3. Operating principle of ? element control valve 56
4. Hydraulic pressures 56
5. Operating principle of the dozer blade/boom sideshifting control valve 59
03 CHECKING OF SERVICE HYDRAULIC PRESSURES 60
1. Adjustment of service pressures (“Bucket” circuit) 60
2. Adjustment of service pressure {“Dozer blader· acid “Sideshifting” circuit) 60
3. Ajustment of secondary pressure on boom control cylinder 63
4. Adjustment of secondary pressure on dipper arm control cylinder 63
04 CHECKING PUMP FLOW RATE (P1, P2, P3) ’64
1. Checking !he !low rate of dual pump + P2) 64
2. Checking the flow rate of each pump (P1 and P2) 67
3. Checking the flow rate o! pump P3 68 4. Replacement of seals !or pumps (P1, P2 and P3) 68
S 400 068 5
05 CONTROL CVUNOERS 71
1. Boom control cylinder 71
2. Dipper arm control cylinder 72
3. Bucket control cylinder 72
4. Boom sideshifting control cylinder 75
5. Dozer blade” control cylinder 75 06 MACHINE TRAVEL CIRCUIT 76
1. Operating principle 76
2. Replacement of seals 79
07 SWINGING PRINCIPLE 80
1. Operating principle 80
08 RECOMMENDATIONS CONCERNING MAINTENANCEOF PUMPS AND
HYDRAULIC MOTOR 82
1. General 82
2. Recommendations 82
2.1 Quality of oil to be used 82
2.2 Viscosity properties 82
2.3 Maximum operating temperature 82
2.4 Cleanliness of oil 82
2.5 Ageing of oil 83
2.6 Checking of oil level 83
2. 7 Protection of the system 83
2.8 Pump drive system 83
SECTION D : TOOLS CHECK LISTS 85 01 Tools 87
1. Engine tools 87
2. Hydraulic circuit tools 87
02 TORQUES 88
1. Thermal engine torque table 88
2. General torque table 89
03 CHECK UST 90

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