New Holland BR740, BR750, BR770, BR780 Service Manual

87352303 7/05 © 2005 CNH America LLC Printed In U.S.A. BR740, BR750, BR770, BR780 REPAIR MANUAL COMPLETE CONTENTS SECTION 00 - GENERAL INFORMATION 2 .............................. SECTION 31 - IMPLEMENT DRIVELINE 3 ............................... SECTION 35 - HYDRAULICS 7 ......................................... SECTION 39 - FRAME 11 ............................................... SECTION 44 - AXLES AND WHEELS 12 ................................. SECTION 55 - ELECTRICAL SYSTEMS 13 ............................... SECTION 60 - PICKUPS 19 ............................................. SECTION 62 - PRESSING 24 ............................................ SECTION 68 - WRAPPING 31 ........................................... SECTION 70 - EJECTION 35 ............................................ SECTION 90 - SHIELDING 35 ........................................... The following pages are the collation of the contents pages from each section and chapter of the BR740, BR750, BR770, and BR780 Repair manual. Complete Repair part # 87352298. The sections used through out all New Holland product Repair manuals may not be used for each product. Each Repair manual will be made up of one or several books. Each book will be labeled as to which sections are in the overall Repair manual and which sections are in each book. The sections listed above are the sections utilized for the BR740, BR750, BR770, and BR780 Round Balers.

2 SECTION 00 - GENERAL INFORMATION BOOK 1 - 87352299 Chapter 1 - General Information CONTENTS Section Description Page 00 000 Introduction 2 ................................................................... Precautionary Statements 3 ....................................................... Safety 4 ........................................................................ Fluid Safety 6 ................................................................... Safety Decals 7 .................................................................. Information Decals 11 ............................................................ Torques and Adjustments 13 ..................................................... Technical Information 14 ......................................................... Hardware Torque 15 ............................................................. Retaining Compounds and Sealants 18 ............................................ Standard Torque Data for Hydraulic Tubes and Fittings 19 ............................ Recommended Lubricants 21 ..................................................... Roller Chains 22 ................................................................ Conversion Charts 24 ........................................................... Ecology and the Environment 28 .................................................. Baler Components 29 ........................................................... Power Flow -- Baler with Stuffer 30 ................................................ Power Flow -- Baler with Rotor 31 ................................................. Driveline Components Baler with Standard Pickup 32 ................................ Driveline Components Baler with Stuffer and Wide Pickup 33 ......................... Driveline Components Baler with Rotor and Wide Pickup 34 .......................... Specifications 35 ................................................................ Storage and Seasonal Preparation 45 .............................................

3 SECTION 31 - IMPLEMENT DRIVELINE BOOK 1 - 87352299 Chapter 1 - PTO Driveline CONTENTS Section Description Page Specifications 2 .................................................................. PTO Constant Velocity 2 ....................................................... Description of Operation 5 ........................................................ Overhaul 6 ...................................................................... 31 201 Front PTO and CV U-joint 6 .................................................... Disassembly 6 ............................................................ Inspection 9 .............................................................. Replacement 9 ........................................................... Assembly 9 .............................................................. Installation 13 ............................................................ 31 201 Rear PTO 14 ............................................................... Removal 14 ............................................................. Disassembly 15 .......................................................... Inspection 16 ............................................................ Assembly 17 ............................................................ Installation 19 ............................................................ 31 201 Shear Bolt Hub 22 ........................................................... 31 201 Shear Bolt Hub Bearing Balls 22 ............................................... Replacement 22 ......................................................... 31 201 Slide Collar Quick - Disconnect 23 ............................................. Removal 23 ............................................................. Replacement 23 .........................................................

4 SECTION 31 - IMPLEMENT DRIVELINE BOOK 1 - 87352299 Chapter 2 - Gearbox CONTENTS Section Description Page Specifications 2 .................................................................. Special Tools 2 .................................................................. Description of Operation 2 ........................................................ Overhaul 3 ...................................................................... 31 220 Gearbox 3 ................................................................... Removal 3 ............................................................... Gearbox Coupler Seal 5 ....................................................... Replacement 5 ........................................................... Gearbox 6 ................................................................... Sectional Views 6 ......................................................... Disassembly 10 .......................................................... Inspection 13 ............................................................ Assembly 14 ............................................................ Installation 21 ............................................................

5 SECTION 31 - IMPLEMENT DRIVELINE BOOK 1 - 87352299 Chapter 3 - Clutches CONTENTS Section Description Page Specifications 3 .................................................................. Special Tools 3 .................................................................. Description of Operation 6 ........................................................ Overhaul 7 ...................................................................... 31 225 Main Drive Slip Clutch (BR740, BR750, BR770) 7 ................................. Removal 7 ............................................................... Disassembly 7 ............................................................ Inspection 8 .............................................................. Replacement 8 ........................................................... Assembly 8 .............................................................. Installation 9 .............................................................. Burnishing 11 ............................................................. Adjustment 12 ........................................................... 31 225 Main Drive Slip Clutch (BR780) 14 ............................................. Removal 14 ............................................................. Disassembly 15 .......................................................... Inspection 15 ............................................................ Assembly 15 ............................................................ Installation 16 ............................................................ Burnishing 19 ............................................................ Adjustment 21 ........................................................... 31 225 Sledge Roll Drive Slip Clutch 22 ............................................... Removal 22 ............................................................. Disassembly 23 .......................................................... Inspection 24 ............................................................ Assembly 24 ............................................................ Installation 25 ............................................................ Burnishing 26 ............................................................ Adjustment 26 ...........................................................

6 SECTION 31 - IMPLEMENT DRIVELINE BOOK 1 - 87352299 Chapter 3 - Clutches (Continued) CONTENTS Section Description Page 31 225 Pickup Slip Clutch -- Standard Pickup 30 ........................................ Removal 30 ............................................................. Disassembly 30 .......................................................... Inspection 31 ............................................................ Assembly 31 ............................................................ Installation 31 ............................................................ Burnishing 31 ............................................................ Adjustment 32 ........................................................... 31 225 Pickup Jaw Clutch -- 1.8 & 2.1 M Wide Pickup 33 ................................ Removal 33 ............................................................. Inspection 36 ............................................................ Installation 36 ............................................................ 60 280 Pickup Jaw Clutch -- 1.5 M Wide Pickup 40 ...................................... Removal 40 ............................................................. Inspection 41 ............................................................ Installation 41 ............................................................ 31 225 Pickup Over-run Clutch -- 2.1 Wide Pickups (Rotor Units) 42 ....................... Removal 42 ............................................................. Inspection 44 ............................................................ Assembly 45 ............................................................ 31 225 Belts Drive Linear Clutch (BR750 and BR780) 48 ................................ Removal 48 ............................................................. Inspection 50 ............................................................ Installation 51 ............................................................ Adjustment 53 ........................................................... 31 225 Belts Drive Over-run Clutch (BR770 Standard) 56 ................................ Removal 56 ............................................................. Inspection 57 ............................................................ Installation 57 ............................................................ 31 225 Belts Drive Radial Arm Clutch (BR770 Option) 60 ................................ Removal 60 ............................................................. Inspection 61 ............................................................ Installation 62 ............................................................

7 SECTION 31 - IMPLEMENT DRIVELINE BOOK 1 - 87352299 Chapter 4 - Drives CONTENTS Section Description Page Specifications 2 .................................................................. Gearbox Output Shaft Cluster Sprocket Location 2 ................................ Description of Operation 2 ........................................................ Overhaul 3 ...................................................................... 31 230 Gearbox Output Driveshaft 3 ................................................... Disassembly 3 ............................................................ Inspection 6 .............................................................. Assembly 6 .............................................................. SECTION 35 - HYDRAULICS BOOK 1 - 87352299 Chapter 1 - Tailgate Lift System CONTENTS Section Description Page 35 550 Description of Operation 2 ........................................................ Tailgate Lift System 2 ......................................................... Overhaul 4 ...................................................................... Tailgate Cylinder 4 ............................................................ Removal 4 ............................................................... Disassembly 5 ............................................................ Inspection 6 .............................................................. Assembly 6 .............................................................. Installation 7 .............................................................. Tailgate Lockout Valve 10 ..................................................... Adjustment 10 ........................................................... Testing 11 ................................................................ Disassembly 12 .......................................................... Assembly 12 ............................................................ Replacement 13 ......................................................... Troubleshooting 14 .............................................................. Tailgate Cylinders 14 .........................................................

8 SECTION 35 - HYDRAULICS BOOK 1 - 87352299 Chapter 2 - Belt Tension System CONTENTS Section Description Page Description of Operation 2 ........................................................ 35 540 Belt Tension System 2 ........................................................ Density Cylinder System 2 ..................................................... Oil  Density Cylinder System 4 ................................................ Overhaul 4 ...................................................................... Density Cylinder System 4 ..................................................... Adjustment 4 ............................................................. Belt Tension Removal 5 ....................................................... Bale Density Pressure 6 ....................................................... Adjustment 6 ............................................................. Belt Tension Cylinder 7 ........................................................ Removal 7 ............................................................... Disassembly 10 .......................................................... Inspection 11 ............................................................. Assembly 12 ............................................................ Installation 13 ............................................................ Relief Valve Operation 17 ..................................................... Relief Valve 20 .............................................................. Removal 20 ............................................................. Installation 20 ............................................................ Cleaning 20 ............................................................. Relief Valve Seals 21 ......................................................... Removal 21 ............................................................. Installation 21 ............................................................ Relief Valve 21 .............................................................. Adjustment (The Maximum Pressure of the Relief Valve) 21 .................... Troubleshooting 22 .............................................................. Density Cylinders 22 .........................................................

9 SECTION 35 - HYDRAULICS BOOK 1 - 87352299 Chapter 3 - Feeding -- Pickup Lift Cylinder/Rotor Knives and Reverse Cylinders CONTENTS Section Description Page 35 000 General Procedures 2 ............................................................ Description of Operation 3 ........................................................ 35 560 Pickup Lift Cylinder 3 ......................................................... Overhaul 3 ...................................................................... 35 560 Pickup Lift Cylinder 3 ......................................................... Removal 3 ............................................................... Disassembly 4 ............................................................ Assembly 4 .............................................................. Installation 4 .............................................................. 35 565 Rotor Knife Cylinder 5 ......................................................... Removal 5 ............................................................... Disassembly 6 ............................................................ Inspection 7 .............................................................. Assembly 8 .............................................................. Installation 9 .............................................................. 35 764 Hydraulic Reverser Cylinder 10 ................................................ Removal 10 ............................................................. Disassembly 11 ........................................................... Inspection 12 ............................................................ Assembly 13 ............................................................ Installation 14 ............................................................ 35 204 Splitter Valve 15 ............................................................. Removal 15 ............................................................. Disassembly 16 .......................................................... Inspection 16 ............................................................ Assembly 16 ............................................................ Troubleshooting 19 .............................................................. All Cylinders 19 ............................................................. Pickup Cylinders 19 .......................................................... Rotor Cylinders 19 ...........................................................

10 SECTION 35 - HYDRAULICS BOOK 1 - 87352299 Chapter 4 - Lubrication -- Greaselines and Oiler CONTENTS Section Description Page 35 000 General Procedures 2 ............................................................ Overhaul 3 ...................................................................... 35 595 Grease System 3 ............................................................. Inspection 3 .............................................................. 35 597 Oiler 5 ...................................................................... Oil Tank 5 ................................................................... Removal 5 ............................................................... Inspection 5 .............................................................. Installation 5 .............................................................. Oil Feed Lines 5 .............................................................. Inspection 5 .............................................................. Oil Brushes 7 ................................................................ Replacement 7 ........................................................... Pump 7 ..................................................................... Removal 7 ............................................................... Disassembly 8 ............................................................ Installation 8 .............................................................. Oil Flow 8 ................................................................... Adjustment 8 .............................................................

New Holland BR740, BR750, BR770, BR780 Service Manual

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