John Deere H752 Harvester Head Operator’s Manual – PDF DOWNLOAD

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John Deere H752 Harvester Head Operator’s Manual – PDF DOWNLOAD

FILE DETAILS:

John Deere H752 Harvester Head Operator’s Manual – PDF DOWNLOAD

P/N: F670736_VX
Language: English
Division: Forestry
Product Lines: Harvesting Heads
Publication Type: Operator’s Manuals
Associated Models: H752
Series: HARVESTING HEADS SERIES
Serial: 1EJH752X000226-

IMAGES PREVIEW OF THE MANUAL:

TABLE OF CONTENTS:

John Deere H752 Harvester Head Operator’s Manual – PDF DOWNLOAD

Table of Contents 2
1 Foreword 7
1 1 Copyright 7
1 2 Foreword 7
1 3 Declaration of Incorporation 7
1 4 Product identification 8
1 5 Base machine requirements 8
1 6 Standard warranty 8
2 Safety 10
2 1 Follow Laws and Regulations 10
2 1 1 Recognize Safety Information 10
2 1 2 Understand Signal Words 11
2 1 3 Prepare for Emergencies 11
2 1 4 Wear Protective Clothing 12
2 1 5 Handle Chemical Products Safely 12
2 1 6 Cabin protective structures 13
2 2 Operating 14
2 2 1 Attach Do not Operate Tag 14
2 2 2 Pay Attention to Bystanders 15
2 2 3 Operate the Boom Safely 15
2 2 4 Keep Danger Zone Clear 16
2 2 5 Avoid saw chain shots 16
2 2 6 Avoid Crush Points 17
2 2 7 Avoid Power Lines 18
2 2 8 What To Do If the Machine Catches Fire? 18
2 2 9 After a fire 19
2 3 Maintenance 19
2 3 1 Keep Machine in Good Condition 20
2 3 2 Use Proper Clothing 20
2 3 3 Use Proper Tools 21
2 3 4 Support Machine Properly 21
2 3 5 Avoid High Pressure Fluids 22
2 3 6 Avoid Heating near Pressurized Fluid Lines 22
2 3 7 Make Welding Repairs Safely 22
2 3 8 Dispose of Waste Properly 23
3 Specifications 24
3 1 Harvester head brochure 24
3 2 Harvester head specifications 24
3 3 General hydraulic system requirements 25
3 4 General hose and fitting requirements 25
3 5 Harvester head components (H752 / HTH250) 26
4 Transportation and storage 27
4 1 Preparing for storage 27
4 2 Transport by road 27
5 Harvesting instructions 28
5 1 Planning the work 28
5 1 1 Example of map sketch 28
5 2 Thinning 28
5 2 1 Thinning with harvester alone 29
5 2 2 Thinning with harvester and chain saw 30
5 2 3 Thinning between logging roads 30
5 3 Regeneration harvesting 31
5 3 1 Felling into trees 31
5 3 2 Felling outwards from the stand 32
5 3 3 Felling in both directions 32
5 4 Felling 33
5 4 1 Felling stage 34
5 4 2 Felling on slope 35
5 4 3 Felling trees with large roots 36
5 5 Delimbing and crosscutting 37
6 Systems and Components 38
6 1 Delimbing knives 38
6 1 1 Delimbing quality 38
6 1 2 Delimbing knives cylinders 39
6 2 Feeding 39
6 3 Saw unit 40
6 3 1 Saw feeding mechanism 41
6 3 2 Chain lubrication 42
6 3 2 1 Chain oil tank 42
6 3 3 Saw sensors 43
6 3 4 FlashCut 43
6 3 5 Chain shot guard 44
6 3 6 Stump treatment 45
6 4 Color marking unit 45
6 4 1 Nozzles in saw box 46
6 5 Length measuring device 47
6 5 1 Length measuring sensor 48
6 5 2 Measuring wheel alternatives 49
6 6 Diameter measuring device (lower knives) 50
6 7 Hydraulic hoses 51
6 8 Harvester head valve 51
6 8 1 Hydraulic functions 52
6 8 2 Valve connectors 53
7 Maintenance 54
7 1 General 54
7 1 1 Preparations 55
7 1 2 Welding instructions 55
7 1 3 Special tools 56
7 1 3 1 Saw motor puller tool 57
7 1 3 2 Assembly tool for feed cylinder piston gasket 58
7 1 3 3 Pulse sensor tool 58
7 1 3 4 Chain tensioning check valve installation tool 59
7 1 4 H752 tightening torques 59
7 1 5 Fluids and lubricants 59
7 1 6 Hydraulic pressure measurements 61
7 1 6 1 Main relief valve pressure 62
7 1 6 2 Pilot pressure 63
7 1 6 3 Saw chain tensioning pressure 64
7 1 6 4 Grabbing pressures 65
7 1 6 5 Low pressure 66
7 1 6 6 Length measuring pressure 67
7 1 6 7 Color marking pump pressure 68
7 1 6 8 Butterfly knife pressure 69
7 2 Every 10 hours or daily 69
7 2 1 Check 70
7 2 2 Grease 71
7 2 2 1 Grease rotator and link 72
7 2 3 Fill 72
7 3 Every 50 hours 72
7 3 1 Check 73
7 3 2 Grease 73
7 4 Every 1000 hours 73
7 4 1 Check 73
7 4 2 Maintain 74
7 4 3 Clean and adjust diameter sensors 74
7 4 4 Sharpen delimbing knives 75
7 4 4 1 Knife sharpening 76
7 4 4 2 Back bevel‌ 77
7 5 As required 77
7 5 1 Color marking maintenance 77
7 5 1 1 Check and clean the nozzles 78
7 5 1 2 Check the color supply 79
7 5 1 3 Check the pump 80
7 5 2 Saw unit maintenance 80
7 5 2 1 Saw chain 81
7 5 2 1 1 Changing the Saw Chain 82
7 5 2 1 2 Sharpening the saw chain 82
7 5 2 1 2 1 Using a grinder for sharpening 83
7 5 2 1 2 2 Using a round-file for sharpening 84
7 5 2 1 2 3 Depth gauges 85
7 5 2 1 3 Repairing the saw chain 86
7 5 2 1 3 1 Installing new chain parts 87
7 5 2 2 Chain tensioning 88
7 5 2 2 1 Bleed chain tensioning system 89
7 5 2 3 Saw bar 89
7 5 2 3 1 Basic inspection 90
7 5 2 3 2 Changing the saw bar 91
7 5 2 3 3 Changing the Bar Holder 92
7 5 2 3 4 Straightening the saw bar 92
7 5 2 3 4 1 Bent bars 93
7 5 2 3 4 2 Twisted bars 94
7 5 2 4 Adjusting saw sensors 95
7 5 2 5 Replacing tip sprocket 96
7 5 3 Inspect chain shot guard 97
7 5 3 1 Identification of excessive wear and damage 98
7 5 4 Length sensor replacement 99
7 5 5 Diameter potentiometer adjustment 99
7 5 6 Expander pin tensioning 100
7 6 Optional equipment maintenance 100
7 6 1 Adjusting rubber feed rollers with Tireco chain (EVERY 200 HOURS) 101
Index 102
Attachments 104
Declaration of Incorporation template_en 105
JD_Harvesterheads_200series_EN 107

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