John Deere 758HD Harvester Head Operator’s Manual – PDF DOWNLOAD

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John Deere 758HD Harvester Head Operator’s Manual – PDF DOWNLOAD

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John Deere 758HD Harvester Head Operator’s Manual – PDF DOWNLOAD

P/N: OMF067251_XJ
Language: English
Division: Forestry
Product Lines: Harvesting Heads
Publication Type: Operator’s Manuals
Associated Models: 758HD
Series: 700 SERIES
Serial: WJ0758D000785–

IMAGES PREVIEW OF THE MANUAL:

TABLE OF CONTENTS:

John Deere 758HD Harvester Head Operator’s Manual – PDF DOWNLOAD

Contents 5
Warranty 7
Standard Warranty Clauses 7
Timberjack Standard Warranty 7
Machines with Extended Coverage (For specified machines only!) 7
Periodic Maintenance 8
Safety Features 9
758HD Harvester Head Safety Features 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
Tightening Torques for Bolt Fastenings 42
Oils and Fluids 43
Instructions for Greasing 43
Oil and Fluid Recommendations 44
Periodic Maintenance 45
Daily maintenance or after every 10 hours 45
Maintenance Weekly or after Every 50 Hours 46
Maintenance after every 250 hours 46
Maintenance – Feeding System 47
Feeding Rollers 47
Tightening the Feeding Roller Chains 48
Feeding Roller Motors 49
The Feeding Roller Hubs at the Bevel Shaft 49
Maintenance – Saw Unit 50
Saw Unit Safety 50
General 51
Chain Saw Maintenance 54
Tightening the Saw Chain 55
Replacing The Drive Sprocket 56
Replacing the Saw Chain and the Saw Bar 57
Sharpening ( 404 Chain Pitch) 58
Dos and Don’ts of Saw Chain Sharpening 59
Saw Bar Maintenance 60
Installation of Inductive Switches 61
Checking/Replacing the Tip Sprocket 66
Maintenance – Length Measuring System 68
Replacing the Pulse Sensor 68
Maintenance – Diameter Measuring System 71
General 71
Checking the TJ 3000 / Timbermatic™ 300 Set Values 72
Checking the Diameter Potentiometer, Timbermatic™ 10 3G+ 73
Adjustment 74
Demounting the Diameter Sensor, Tj 3000 / Timbermatic™ 300 75
Demounting the Diameter Sensor, Timbermatic™ 10 76
Mounting the Diameter Sensor 77
Maintenance – Delimbing Knives 78
Sharpening 78
Troubleshooting 80
Checklist 80
Troubleshooting 82
Hydraulic System 85
General 85
Hydraulic Components of the Harvester Head 86
Hydraulic Diagrams 88
Checking and Adjusting Pressures 90
Checking the Adjustment of the Main Pressure Relief Valve (13) 91
Pressure Reducing Valve (41) for the Upper Pressure of the Upper Delimbing Knives 92
Pressure Reducing Valve (34) for the Lower Pressure of the Upper Delimbing Knives 93
Pressure Reducing Valve (28) for the Lower Squeeze Pressure of the Feeding Rollers 94
Pressure Reducing Valve (29) for the Increased Squeeze Pressure of the Feeding Rollers 95
Pressure Relief Valve (31) of the Harvester Head Lift 96
Pressure Relief Valve (36) of the Pressing Power on the Saw 97
Pressure Relief Valve (FlashCut) of the Saw Bar Pressing Pressure (option) 98
Pressure Reducing Valve (41) for the Upper Pressure of the Lower Delimbing Knives 99
Pressure Reducing Valve (34) for the Lower Pressure of the Lower Delimbing Knives 100
Flow Control Check Valve (70) 101
Adjusting the Pilot Pressure 101
Electrical System 102
General 102
Control and Measuring System 103
Replacing an Electric Lead in HHM Connectors 104
Connectors in HHM 105
Connectors in MFM 3G+ (option) 109
Wiring Diagrams 112
Optional Equipment – Color Marking Systems 122
General 122
Before Use 123
Maintenance 126
Useful Tips 129
When not in Use 129
Optional Equipment – SuperCut Saw Equipment 130
Saw Components 130
Hydraulic Pressures and Volyme Flows 130
Tightening Torques for Bolt Fastenings 131
Maintenance 131
Special Tools 131
Description of Operation 133
Chain Tensioning in Conjunction with Sawing 134
Bleeding the Chain Tensioning System 135
Adjusting the Pressure of the Chain Tensioner 136
Changing the Saw Chain 137
Changing the Saw Bar 138
Changing the Bar Holder 139
Chain Lubrication System 140
Bleeding the Chain Lubrication System 141
Adjusting the Sensors 142
Hydraulic Diagrams 143
Optional Equipment – FlashCut 145
Function 145
Technical Data 146
Measures 146
Feed 147
Felling and Sawing 147
Delimbing 147
Optional Equipments 148

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