Bobcat compact Excavator X120 Service Manual 6570516 – PDF DOWNLOAD

Description

Bobcat compact Excavator X120 Service Manual 6570516 – PDF DOWNLOAD

FILE DETAILS:

Bobcat compact Excavator X120 Service Manual 6570516 – PDF DOWNLOAD

Language : English
Pages :88
Downloadable : Yes
File Type : PDF
Size:2.56 MB

TABLE OF CONTENTS:

Bobcat compact Excavator X120 Service Manual 6570516 – PDF DOWNLOAD

SECTION A : DIESEL ENGINE
01 – ENGINE IDENTIFICATION
02 – ENGINE DESCRIPTION
03- MAIN TECHNICAL CHARACTERISTICS OF THE ENGINE :
04 – POWER OUTPUT DIAGRAM
05 – MALFUNCTIONS – CAUSES AND REMEDIES
06 – ADJUSTMENTS
1 Adjustment of rocker arm clearance
2 Checking and adjustment of injection time
3 Adjustment of engine rotation speed
07 – CHECKING AND REPAIRING THE ENGINE
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
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
2 Checking diesel fuel pump rate •
3 Checking an injection atomiser
3 1 Checking the pressure
3 2 Checking atomatisation
3 3 Checking sealing
3 4 Checking the adjustment of retaining check valves on the
injection pump (for the 3 valves)
10 – COMPRESSION
1 Checking the compression for each cylinder
11 – COOLING CIRCUIT •
1 Description
2 Checks
2 1 Water pump
2 2 Thermostat
2 3 Heat switch
2 4 Fan belt
SECTION B : ELECTRICAL EQUIPMENT
01 – ELECTRICAL CIRCUIT
1 Schematic diagram
02- STARTER MOTOR
1 Def!nition
2 General checks
3 Operating tests (under no toad) 42
4 Checking the brush contacts 42
5 Checking the armature 42
6 Checking the commutator 42
7 Checking the excitation coils 42
8 Check the excitation circuit (earthed) 42
9 Checking the drive pinion 45
10 Checking clearance of starter 45
11 Checking the relay 45
03 – ALTERNATOR 46
1 Definition 46
2 Checking alternator operation 46
3 Checking the diodes (short circuit) 46
4 Checking the startor 46
5 Checking the coil 46
SECTION C : HYDRAULIC SYSTEM 49
01 – DESCRIPTION OF HYDRAULIC SYSTEM 51
1 Hydraulic system 51
02 – HYDRAULIC CIRCUIT 52
1 Simplified schematic diagram 52
2 Detailed schematic diagram 55
3 Operating principle of 7 element control valve 56
4 Hydraulic pressures 56
5 Operating principle of the dozer blade control valve 59
03 – CHECKING AND ADJUSTMENT OF HYDRAULIC PRESSURES 60
1 Adjustment of service pressures («Bucket» Circuit) 60
2 Adjustment of service pressure («Dozer Blade» Circuit) 60
3 Adjustment of secondary pressure on boom control cylinder 63
4 Ajustment of secondary pressure on dipper arm control cylinder 63
04 – CHECKING THE FLOW RATE OF PUMPS (P1 P2 P3) 64
1 Checking the flow rate of dual pump (P1 P2) , 64
2 Checking the flow rate of each pump (Pl and P2) 67
3 Checking the flow rate of pump P3 68
4 Replacement of seals for pumps 68
05 – CONTROL CYLINDER 71
1 Boom control cylinder 71
2 Dipper arm control cylinder 72
3 Bucket control cylinder 72
4 Boom side shift control cylinder 75
5 «Dozer Blade» control cylinder 75
06 – MOVEMENT CIRCUIT 76
1 Operating principle 76
2 Replacement of seals 76
07 – SWINGING/SIDE SHIFT CIRCUIT 79
1 Operating principle 79
2 Replacement of seals 79
08- RECOMMENDATIONS CONCERNING MAINTENANCE OF
PUMPS AND HYDRAULIC MOTOR 80
1 General 80
2 Recommendations 80
2 1 Quality of oil to be used 80
2 2 Viscosity properties 80
2 3 Maximum operating temperature 80
2 4 Cleanliness of oil 80
2 5 Ageing of oil 81
2 6 Checking of oil level 81
2 7 Protection of the system 81
2 8 Pump drive system 81
SECTION D : TOOLS – TORQUE TABLE – CHECK LIST 83
01 – TOOLS 85
1 Engine tools 85
2 Hydraulic circuit tools 85
02 – TORQUE TABLE : 86
03 – CHECK LIST 87

IMAGES PREVIEW OF THE MANUAL:

Customer Support: [email protected]

PLEASE NOTE:

• This is the same manual used by the dealers to diagnose and troubleshoot your vehicle
• You will be directed to the download page as soon as the purchase is completed. The whole payment and downloading process will take anywhere between 2-5 minutes
• Need any other service / repair / parts manual, please feel free to contact [email protected] . We still have 50,000 manuals unlisted

s.m