John Deere H270 Harvester Head Operator’s Manual OMF069764 PDF

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John Deere H270 Harvester Head Operator’s Manual OMF069764 – PDF DOWNLOAD

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John Deere H270 Harvester Head Operator’s Manual OMF069764 – PDF DOWNLOAD

P/N: OMF069764_UQ
Language: English
Division: Forestry
Product Lines: Harvesting Heads
Publication Type: Operator’s Manuals
Associated Models: H270E
Serial: (EJH270X000305-)
Description: OPERATOR’S AND MAINTENANCE MANUAL

IMAGES PREVIEW OF THE MANUAL:

TABLE OF CONTENTS:

John Deere H270 Harvester Head Operator’s Manual OMF069764 – PDF DOWNLOAD

Contents 7
Warranty 9
Standard warranty clauses 9
Standard Warranty 9
Periodic Maintenance 9
Safety – General Precautions 10
General 10
Recognize Safety Information 10
Understand Signal Words 10
Follow Safety Instructions 11
Before Use 12
Safety – Operating Precautions 13
Operating Safety Precautions 13
Before a New Shift 14
Transport by Road 14
Prepare Harvester Head for Storage 15
Safety – Maintenance Precautions 16
General 16
Working with Oils and Chemicals 18
Planning Your Work 19
General 19
Example of How a Map Sketch May Look 20
Thinning 22
General 22
Working Techniques for Thinning 24
Regeneration Harvesting 27
General 27
Working Techniques for Regeneration Harvesting 27
Felling 30
General 30
Stump Height 30
Felling Stage 31
When Felling on Sloping Ground 32
Felling Trees with Large Roots 34
Delimbing and Crosscutting 37
General 37
Maintenance – General 39
General 39
Maintenance Safety Precautions 40
Special Tools 41
Tightening Torques for Bolt Fastenings 44
Oils and Fluids 45
Instructions for Greasing 45
Oil and Fluid Recommendations 46
Periodic Maintenance 47
Maintenance Daily or after Every 10 Hours 47
Maintenance Weekly or after Every 50 Hours 48
Maintenance after Every 250 Hours 49
Maintenance after Every 950 Hours 50
Maintenance – Feeding Equipment 51
Feeding Rollers 51
Feeding Roller Motors 52
Maintenance – Saw Equipment 53
Saw Unit Safety 53
Saw Components 54
Description of Operation 55
Hydraulic Pressures and Volyme Flows 55
Chain Saw Maintenance 56
Changing the Saw Chain 57
Sharpening ( 404 Chain Pitch) 58
Dos and Don’ts of Saw Chain Sharpening 59
Chain Lubrication System 60
Checking the chain lubrication system 61
Chain tensioning in conjunction with sawing 62
Bleeding the Chain Tensioning System 63
Adjusting the pressure of the chain tensioner 64
Saw Bar Maintenance 65
Changing the Saw Bar 67
Changing the Bar Holder 68
Adjusting the Sensors 69
Checking/Replacing the Tip Sprocket 70
Maintenance – Length Measuring System 71
General 71
Replacing the pulse sensor 72
Maintenance – Diameter Measuring System 73
General 73
Checking the TJ 3000 / Timbermatic™ 300 Set Values 74
Checking the Diameter Potentiometer, Timbermatic™ 10 3G+ 75
Adjustment 76
Demounting the Diameter Sensor, Tj 3000 / Timbermatic™ 300 77
Demounting the Diameter Sensor, Timbermatic™ 10 3G+ 79
Mounting the diameter sensor 80
Maintenance – Delimbing Knives 81
Adjustable upper delimbing knife 81
Sharpening 82
Troubleshooting 83
Checklist 83
Troubleshooting 85
Hydraulic System 88
General 88
Hydraulic Components of the Harvester Head 88
Hydraulic Components of the Valve Block 89
Electric Connectors, Valve Block 91
Hydraulic Diagrams 93
Checking and Adjusting Pressures 97
Checking the settings of the main pressure relief valve (6) 98
Adjusting the main pressure relief valve (6) 99
Checking/adjusting the low pressure pressure reduce valve (8) 100
Checking/adjusting the pressing pressure pilot valve for delimbing knives, lower delimbing knives (24), upper delimbing knives (24) 100
Checking/adjusting the feed roller pressing pressure pilot valve (24) 102
Checking/adjusting the measuring wheel pressure reduce valve (48) 103
Checking/adjusting the saw bar feed/return pressure reduce valve (12) 104
Adjusting the pressure of the automatic chain tensioner (34) 104
Checking/adjusting the pressure reduce valve (37) for feed forward 105
Pressure Relief Valve (FlashCut) of the Saw Bar Pressing Pressure (option) 106
Electrical System 107
General 107
Control and Measuring System 108
Replacing an Electric Lead in HHM Connectors 109
Connectors in HHM 110
Connectors in MFM 3G+ (option) 114
Wiring Diagrams 116
Optional Equipment – Color Marking Systems 122
Before Use 122
Maintenance 125
Useful Tips 126
When not in Use 127
Optional Equipment – FlashCut 128
Function 128
Technical Data 129
H270 Harvester Head 129

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