New Holland MH2.6 and MH3.6 Tier 3 Wheeled Excavator Manual

New Holland MH2.6 and MH3.6 Tier 3 Wheeled Excavator Manual

$34.50

Manual For: Wheeled Excavator MH2.6 and MH3.6 Tier 3
Format: PDF
Print No. 87730662A Tier 3
English

Repair Manual for Excavator MH2.6 and MH3.6 Tier 3

New Holland MH2.6 and MH3.6 Tier 3 Excavator Service Manual: 915 Pages

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Description

New Holland MH2.6 and MH3.6 Tier 3 Wheeled Excavator Service Manual

Manual For: Wheeled Excavator MH2.6 and MH3.6 Tier 3
Format: PDF
Print No. 87730662A Tier 3
English

Repair Manual for Excavator MH2.6 and MH3.6 Tier 3

New Holland MH2.6 and MH3.6 Tier 3 Excavator Service Manual: 915 Pages

Schematic Set – Hydraulic and Electrical Schematics is included in the manual

INDEX
SPECIFICATIONS
01 – MAIN OPERATING RULES
02 – SAFETY PRECAUTIONS
03 – FEATURES AND DATA
04 – UPPER STRUCTURE
05 – UNDERCARRIAGE
06 – FRONT ATTACHMENT
07 – HYDRAULIC SYSTEM
08 – ELECTRICAL SYSTEM

The New Holland manual is applicable for the model namely : MH2.6 and MH3.6 Tier 3

The MH2.6 and MH3.6 Tier 3 Excavator Workshop Manual is wrote by New Holland repair specialist. It provides important information on carrying out repair work expertly. Please go carefully through the Workshop Manual of the mini excavator before starting any repair work. Use the Workshop Manual of the MH2.6 and MH3.6 Tier 3 Wheeled Excavator as a reference book and source of information even if you are familiar with mini excavator technology. Using the Workshop Manual, the experience construction machine mechanic can carry out any necessary repairs expertly.

Sections of the Manual

The Manual is into main groups and subgroups, and covers any previous version of the machine. Any additions or modifications which can happen at a later date are not describe in this manual. The require information can easily be found by referring to the table of contents. For reasons of clarity, some of the illustrations are present in simplified form. Differences from the actual version at the MH2.6 and MH3.6 Tier 3 Wheeled excavator are therefore possible if this adds to the clarity of the information.

REPAIR and Parts

Carry out any necessary repair work as soon as possible.This reduces repair costs and increases the availability of your mini excavator When doing any work on the mini excavator, always observe the instructions given in the Workshop Manual. Extensive works not describe in the New Holland MH2.6 and MH3.6 Tier 3 Workshop Manual would be done for you by your dealer. Always use original spare parts only.

Identify the Tier Level of your Equipment (Read our Article on Tier Level )Diesel Engine Certification Tier Chart

 

 

SECTION 01 MAIN
OPERATING RULES
1. INTRODUCTION ………………………………………………………………………………………………………………………. 1
1.1 FOREWORD …………………………………………………………………………………………………………………….. 1
1.2 MANUAL HANDLING…………………………………………………………………………………………………………. 1
SECTION 02 SAFETY
PRECAUTIONS
1. SAFETY PRECAUTIONS…………………………………………………………………………………………………………… 1
2. SAFETY DECALS …………………………………………………………………………………………………………………… 41
SECTION 03 FEATURES
AND DATA
1. FOREWORD ……………………………………………………………………………………………………………………………. 1
2. IDENTIFICATION DATA…………………………………………………………………………………………………………….. 2
3. NOISE LEVELS (2000/14/EC)…………………………………………………………………………………………………….. 3
4. SUMMARY PLATE FOR MAINTENANCE OPERATIONS………………………………………………………………. 5
5. WHEELED EXCAVATOR MAIN COMPONENTS………………………………………………………………………….. 6
5.1 TECHNICAL SPECIFICATIONS ………………………………………………………………………………………….. 7
5.2 OPERATING WEIGHTS……………………………………………………………………………………………………. 17
5.3 DIGGING PERFORMANCE………………………………………………………………………………………………. 18
5.4 TRANSPORT DIMENSIONS……………………………………………………………………………………………… 20
5.5 BUCKET USEFULNESS DEPENDING ON ARM …………………………………………………………………. 24
6. FILLING CHART……………………………………………………………………………………………………………………… 26
SECTION 04 UPPER
STRUCTURE
1. UPPER STRUCTURE ……………………………………………………………………………………………………………….. 1
2. MAIN FRAME AND COUNTERWEIGHT………………………………………………………………………………………. 5
3. POWER UNIT…………………………………………………………………………………………………………………………… 9
3.1 ENGINE………………………………………………………………………………………………………………………….. 10
4. RADIATOR…………………………………………………………………………………………………………………………….. 12
5. HYDRAULIC PUMPS ………………………………………………………………………………………………………………. 14
5.1 MAIN PUMP ……………………………………………………………………………………………………………………. 15
5.2 DOUBLE PUMP WITH GEARS………………………………………………………………………………………….. 49
6. AIR CLEANER………………………………………………………………………………………………………………………… 61
7. EXHAUST SILENCER……………………………………………………………………………………………………………… 62
8. HYDRAULIC OIL TANK……………………………………………………………………………………………………………. 64
9. FUEL TANK……………………………………………………………………………………………………………………………. 66
10. FUEL TRANSFER PUMP…………………………………………………………………………………………………………. 67
11. GUARDS AND COVERS………………………………………………………………………………………………………….. 70
12. CAB ………………………………………………………………………………………………………………………………………. 76
13. SWINGING ASSY……………………………………………………………………………………………………………………. 88
14. MAIN CONTROL VALVE………………………………………………………………………………………………………… 100
15. SLEW DEVICE ……………………………………………………………………………………………………………………… 124
15.1 SLEW HYDRAULIC MOTOR …………………………………………………………………………………………… 126
15.2 SLEW REDUCTION UNIT……………………………………………………………………………………………….. 140
16. CONTROL LEVER ………………………………………………………………………………………………………………… 159
17. CONTROL PEDAL ………………………………………………………………………………………………………………… 164
18. STEERING UNIT …………………………………………………………………………………………………………………… 166
19. SWIVEL JOINT ……………………………………………………………………………………………………………………… 191
19.1 FEATURES AND DATA…………………………………………………………………………………………………… 193
20. BRAKE PEDAL VALVE ………………………………………………………………………………………………………….. 194
21. ACCUMULATORS…………………………………………………………………………………………………………………. 208
22. PRESSURE SWITCHES ………………………………………………………………………………………………………… 211
23. SOLENOID VALVES ……………………………………………………………………………………………………………… 215
SECTION 05 UNDERCARRIAGE
1. SLEWING BEARING …………………………………………………………………………………………………………………. 2
2. LOWER FRAME ……………………………………………………………………………………………………………………….. 5
3. TRAVEL ASSY …………………………………………………………………………………………………………………………. 6
3.1 TRAVEL HYDRAULIC MOTOR……………………………………………………………………………………………. 7
3.2 SPEEDS GEAR BOX………………………………………………………………………………………………………… 23
3.3 STEERING AXLES: FRONT AND REAR…………………………………………………………………………….. 52
3.4 RIGID REAR AXLE…………………………………………………………………………………………………………. 150
3.5 DRIVE SHAFT ……………………………………………………………………………………………………………….. 213
4. WHEELS AND TYRES …………………………………………………………………………………………………………… 214
4.1 TYRES………………………………………………………………………………………………………………………….. 222
5. BLADE …………………………………………………………………………………………………………………………………. 227
6. LATERAL STABILIZERS………………………………………………………………………………………………………… 228
SECTION 06 FRONT
ATTACHMENT
1. INTRODUCTION ………………………………………………………………………………………………………………………. 1
2. CYLINDER REMOVAL AND INSTALLATION……………………………………………………………………………….. 6
2.1 BUCKET CYLINDER………………………………………………………………………………………………………….. 6
2.2 ARM CYLINDER………………………………………………………………………………………………………………. 10
2.3 POSITIONING CYLINDER ………………………………………………………………………………………………… 14
2.4 BOOM CYLINDER……………………………………………………………………………………………………………. 19
3. MH2.6 – CYLINDERS……………………………………………………………………………………………………………….. 24
3.1 BUCKET CYLINDER………………………………………………………………………………………………………… 24
3.2 ARM CYLINDER………………………………………………………………………………………………………………. 31
3.3 POSITIONING CYLINDER ………………………………………………………………………………………………… 38
3.4 BOOM CYLINDER……………………………………………………………………………………………………………. 45
4. MH3.6 – CYLINDERS……………………………………………………………………………………………………………….. 52
4.1 BUCKET CYLINDER………………………………………………………………………………………………………… 52
4.2 ARM CYLINDER………………………………………………………………………………………………………………. 59
4.3 POSITIONING CYLINDER ………………………………………………………………………………………………… 66
4.4 BOOM CYLINDER……………………………………………………………………………………………………………. 73
5. ANTIDROP VALVE………………………………………………………………………………………………………………….. 81
6. PINS AND BUSHINGS …………………………………………………………………………………………………………….. 83
7. BUCKETS………………………………………………………………………………………………………………………………. 88
SECTION 07 HYDRAULIC
SYSTEM
1. HOSES AND FITTINGS …………………………………………………………………………………………………………….. 1
2. HYDRAULIC SYSTEM ………………………………………………………………………………………………………………. 8
2.1 MAIN PIPELINES ………………………………………………………………………………………………………………. 8
2.2 SUCTION AND DELIVERY PIPELINES………………………………………………………………………………… 9
2.3 RETURN PIPELINES……………………………………………………………………………………………………….. 11
2.4 DRAINING PIPELINES……………………………………………………………………………………………………… 13
2.5 FRONT ATTACHMENT PIPELINES…………………………………………………………………………………… 17
2.6 NIBBLER/BREAKER CONTROL PIPELINES………………………………………………………………………. 18
2.7 SLEW CONTROL PIPELINES – TRAVEL AND BLADE/STABILIZERS……………………………………. 23
2.8 STEERING PIPELINES (MACHINE 4WD)…………………………………………………………………………… 25
2.9 STEERING PIPELINES (MACHINE 2WD)…………………………………………………………………………… 28
2.10 BRAKE PIPELINES………………………………………………………………………………………………………….. 31
2.11 POWER STEERING PIPELINES……………………………………………………………………………………….. 35
2.12 LATERAL STABILIZERS AND BLADE CONTROL PIPELINE………………………………………………… 40
2.13 LOCK VALVES………………………………………………………………………………………………………………… 44
2.14 STABILIZERS/BLADE SELECTION VALVE………………………………………………………………………… 45
2.15 FRONT AXLE LOCK ………………………………………………………………………………………………………… 46
2.16 AXLE LOCK VALVE…………………………………………………………………………………………………………. 48
2.17 PRESSURE RELIEF VALVE……………………………………………………………………………………………… 48
3. OPERATION OF CIRCUITS……………………………………………………………………………………………………… 50
SECTION 08 ELECTRICAL
SYSTEM
1. SAFETY PRECAUTIONS…………………………………………………………………………………………………………… 1
2. FEATURES AND DATA …………………………………………………………………………………………………………….. 2
3. COMPONENTS LOCATION AND OPERATION……………………………………………………………………………. 3
4. UNDERCARRIAGE ELECTRIC COMPONENTS…………………………………………………………………………… 6
4.1 MACHINE WITH FOUR STEERING WHEELS ………………………………………………………………………. 6
4.2 MACHINE WITH TWO STEERING WHEELS………………………………………………………………………… 7
5. CONTROL UNITS ELECTRIC SYSTEM………………………………………………………………………………………. 7
6. LIGHT AND BEAMS GROUP……………………………………………………………………………………………………… 8
7. GAUGES AND CONTROLS……………………………………………………………………………………………………….. 9
7.1 DASHBOARDS………………………………………………………………………………………………………………….. 9
7.2 CONTROL LEVERS…………………………………………………………………………………………………………. 11
7.3 SWITCHES AND CONTROL LIGHTS PANEL……………………………………………………………………… 12
7.4 SWITCHES AND WARNING LAMPS………………………………………………………………………………….. 13
7.5 MONITOR PANEL……………………………………………………………………………………………………………. 14
7.6 KEY START SWITCH……………………………………………………………………………………………………….. 26
7.7 LEFT CONTROL LEVER…………………………………………………………………………………………………… 27
7.8 RIGHT-HAND CONTROL LEVER………………………………………………………………………………………. 28
7.9 CONTROL PANEL AND SWITCHES………………………………………………………………………………….. 29
7.10 MACHINE CONTROL CARD …………………………………………………………………………………………….. 32
7.11 PUMP CONTROL CARD…………………………………………………………………………………………………… 34
8. ELECTRIC COMPONENTS ……………………………………………………………………………………………………… 36
8.1 THROTTLE LEVER CONTROL …………………………………………………………………………………………. 36
8.2 SWIVEL JOINT………………………………………………………………………………………………………………… 37
8.3 BATTERIES…………………………………………………………………………………………………………………….. 38
8.4 GENERATOR………………………………………………………………………………………………………………….. 39
8.5 STARTER……………………………………………………………………………………………………………………….. 40
9. CONTROL LINE AND WIRING HARNESSES…………………………………………………………………………….. 41
9.1 CONTROLS ON CONSOLES ……………………………………………………………………………………………. 41
9.2 CONTROLS FOR SIDE PANEL SWITCHES……………………………………………………………………….. 49
9.3 ANTI-TILTING CHECK CONTROL LINE …………………………………………………………………………….. 51
9.4 WORKING LIGHTS CONTROL LINE………………………………………………………………………………….. 52
9.5 TRAFFIC BEAMS CONTROL LINE…………………………………………………………………………………….. 53
9.6 STEERING COLUMN CONTROLS…………………………………………………………………………………….. 58
SECTION 09 TROUBLESHOOTING
1. INTRODUCTION ………………………………………………………………………………………………………………………. 1
2. HYDRAULIC SYSTEM TROUBLESHOOTING ……………………………………………………………………………… 3
3. ELECTRICAL SYSTEM TROUBLESHOOTING…………………………………………………………………………… 28
SECTION 10 PERFORMANCE
TEST
1. INTRODUCTION ………………………………………………………………………………………………………………………. 1
1.1 GENERAL INFORMATION FOR MACHINE TESTING……………………………………………………………. 1
2. STANDARD PERFORMANCES – MH2.6 ……………………………………………………………………………………… 3
2.1 TABLE OF EXCAVATOR STANDARD PERFORMANCES……………………………………………………… 3
2.2 HYDRAULIC COMPONENTS STANDARD PERFORMANCE………………………………………………….. 5
2.3 MAIN PUMP P-Q CURVE……………………………………………………………………………………………………. 6
3. STANDARD PERFORMANCES – MH3.6 ……………………………………………………………………………………… 7
3.1 TABLE OF EXCAVATOR STANDARD PERFORMANCES……………………………………………………… 7
3.2 HYDRAULIC COMPONENTS STANDARD PERFORMANCE………………………………………………….. 9
3.3 MAIN PUMP P-Q CURVE………………………………………………………………………………………………….. 10
4. PREPARATION FOR PERFORMANCE TEST…………………………………………………………………………….. 11
5. EXCAVATOR PERFORMANCE TEST……………………………………………………………………………………….. 13
5.1 ENGINE PERFORMANCE ………………………………………………………………………………………………… 13
5.2 SWING PERFORMANCE………………………………………………………………………………………………….. 14
5.3 FRONT ATTACHMENT PERFORMANCE…………………………………………………………………………… 18
5.4 CONTROL LEVERS…………………………………………………………………………………………………………. 21
6. BOOM/SLEW PERFORMANCE………………………………………………………………………………………………… 22
6.1 COMBINED SLEW/BOOM TEST ……………………………………………………………………………………….. 22
6.2 STEERING………………………………………………………………………………………………………………………. 23
6.3 BRAKES SYSTEM……………………………………………………………………………………………………………. 24
7. GEAR BOX …………………………………………………………………………………………………………………………….. 27
7.1 GEAR BOX PRESSURE CHECK……………………………………………………………………………………….. 27
8. COMPONENTS PERFORMANCE …………………………………………………………………………………………….. 28
8.1 OVERPRESSURE VALVE AND PILOT CONTROL LINE………………………………………………………. 28
8.2 OVERPRESSURE RELIEF VALVES ………………………………………………………………………………….. 30
8.3 DRIVE SHAFT …………………………………………………………………………………………………………………. 33
8.4 HYDRAULIC PUMPS – MH2.6……………………………………………………………………………………………. 35
8.5 HYDRAULIC PUMPS – MH3.6……………………………………………………………………………………………. 37
8.6 TRAVEL MOTOR……………………………………………………………………………………………………………… 39

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