John Deere H742 Harvester Head Operator’s Manual – PDF DOWNLOAD

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John Deere H742 Harvester Head Operator’s Manual – PDF DOWNLOAD

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John Deere H742 Harvester Head Operator’s Manual – PDF DOWNLOAD

P/N: F069696_RK
Language: English
Division: Forestry
Product Lines: Harvesting Heads
Publication Type: Operator’s Manuals
Associated Models: H742
Series: HARVESTING HEADS SERIES
Serial: EJH742X000176-

IMAGES PREVIEW OF THE MANUAL:

TABLE OF CONTENTS:

John Deere H742 Harvester Head Operator’s Manual – 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
Handle Starting Fluids Safely 14
Before a New Shift 14
Transport by Road 15
Prepare Harvester Head for Storage 16
Safety – Maintenance Precautions 17
General 17
Working with Oils and Chemicals 19
Prevent Battery Explosions 19
Prevent Acid Burns 20
Make Welding Repairs Safely 21
Planning Your Work 22
General 22
Example of How a Map Sketch May Look 24
Thinning 26
General 26
Working Techniques for Thinning 28
Regeneration Harvesting 31
General 31
Working Techniques for Regeneration Harvesting 31
Felling 34
General 34
Stump Height 34
Felling Stage 35
When Felling on Sloping Ground 36
Felling Trees with Large Roots 38
Delimbing and Crosscutting 41
General 41
Maintenance – General 43
General 43
Maintenance Safety Precautions 44
Check the Batteries for Charge and Electrolyte Level 46
Special Tools 46
Tightening Torques for Bolt Fastenings 49
Oils and Fluids 50
Instructions for Greasing 50
Oil and Fluid Recommendations 51
Periodic Maintenance 52
Maintenance Daily or after Every 10 Hours 52
Maintenance Weekly or after Every 50 Hours 52
Maintenance after Every 200 Hours 53
Maintenance after Every 250 Hours 53
Maintenance – Feeding Equipment 54
Feeding Rollers 54
Feeding Roller Motors 55
Maintenance – Saw Equipment 56
Saw Unit Safety 56
Saw Components 57
Description of Operation 58
Hydraulic Pressures and Volyme Flows 58
Chain Saw Maintenance 59
Changing the Saw Chain 60
Sharpening ( 404 Chain Pitch) 61
Dos and Don’ts of Saw Chain Sharpening 62
Chain Lubrication System 63
Checking the chain lubrication system 64
Chain tensioning in conjunction with sawing 65
Bleeding the Chain Tensioning System 66
Adjusting the pressure of the chain tensioner 67
Saw Bar Maintenance 68
Changing the Saw Bar 70
Changing the Bar Holder 71
Adjusting the Sensors 72
Checking/Replacing the Tip Sprocket 73
Maintenance – Length Measuring System 74
General 74
Removing the pulse generator 74
Fitting the pulse generator 75
Maintenance – Diameter Measuring System 76
General 76
Checking the TJ 3000 / Timbermatic™ 300 Set Values 77
Checking the Diameter Potentiometer, Timbermatic™ 10 3G+ 78
Adjustment 79
Demounting the Diameter Sensor, Tj 3000 / Timbermatic™ 300 80
Demounting the Diameter Sensor, Timbermatic™ 10 82
Mounting the Diameter Sensor 83
Maintenance – Delimbing Knives 84
Sharpening 84
Troubleshooting 85
Checklist 85
Troubleshooting 87
Hydraulic System 90
General 90
Hydraulic Components of the Harvester Head 90
Hydraulic Components of the Valve Block 91
Electric connectors, valve block 93
Hydraulic Diagrams 95
Checking and Adjusting Pressures 100
Checking the Adjustment of the Main Pressure Relief Valve (39) 101
Adjusting the Main Pressure Relief Valve (9) 102
Checking/adjusting the low pressure relief valve (8) 103
Checking/adjusting the pressure relief valve for delimbing knives, lower delimbing knife (24), upper delimbing knife (24) 103
Checking/adjusting the feed roller pressure relief valve (44) 105
Checking/adjusting the measuring wheel pressure relief valve (48) 108
Checking/adjusting the saw bar return pressure relief valve (12) 108
Adjusting the pressure of the automatic chain tensioner (34) 109
Electrical System 110
General 110
Control and Measuring System 111
Replacing an Electric Lead in HHM Connectors 112
Connectors in HHM 113
Connectors in HM (option) 117
Wiring Diagrams 120
Optional Equipment – Color Marking Systems 128
Before Use 128
Maintenance 130
Useful Tips 131
When not in Use 132
Technical Data 133
H742 Harvester Head 133
Page Numbers 7
Section 0-1 9
1 9
Section 1-1 10
1 10
2 11
3 12
Section 1-2 13
1 13
2 14
3 15
4 16
Section 1-3 17
1 17
2 18
3 19
4 20
5 21
Section 2-1 22
1 22
2 23
3 24
4 25
Section 2-2 26
1 26
2 27
3 28
4 29
5 30
Section 2-3 31
1 31
2 32
3 33
Section 2-4 34
1 34
2 35
3 36
4 37
5 38
6 39
7 40
Section 2-5 41
1 41
2 42
Section 3-1 43
1 43
2 44
3 45
4 46
5 47
6 48
7 49
Section 3-2 50
1 50
2 51
Section 3-3 52
1 52
2 53
Section 3-4 54
1 54
2 55
Section 3-5 56
1 56
2 57
3 58
4 59
5 60
6 61
7 62
8 63
9 64
10 65
11 66
12 67
13 68
14 69
15 70
16 71
17 72
18 73
Section 3-6 74
1 74
2 75
Section 3-7 76
1 76
2 77
3 78
4 79
5 80
6 81
7 82
8 83
Section 3-8 84
1 84
Section 4-1 85
1 85
2 86
3 87
4 88
5 89
Section 5-1 90
1 90
2 91
3 92
4 93
5 94
6 95
7 96
8 97
9 98
10 99
11 100
12 101
13 102
14 103
15 104
16 105
17 106
18 107
19 108
20 109
Section 6-1 110
1 110
2 111
3 112
4 113
5 114
6 115
7 116
8 117
9 118
10 119
11 120
12 121
13 122
14 123
15 124
16 125
17 126
18 127
Section 7-1 128
1 128
2 129
3 130
4 131
5 132
Section 8-1 133
1 133
2 134

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