Part of the New Holland Repair Manuals.
This is New Holland service manual 48143704 for the B80B backhoe loader. It is the 1st edition in English, dated April 2017, and it covers 2WD and 4WD builds with standard or heavy duty rear tires.
The book covers the power shuttle, the torque converter, both axles, brakes, steering, loader and backhoe hydraulics, cab climate control and 18 electrical schematic sheets.
Fill capacities, tire pressures and wheel nut torques are set out plainly.
What's Inside This New Holland B80B Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 1-32 | Safety Rules, Equipment Servicing, Fuse and Relay Locations, Shop and Assembly Instructions, Standard Torque Tables, Fluid Capacities |
| Engine | 33-70 | Engine Removal and Installation, Engine Troubleshooting, Exhaust Manifold, Muffler, Radiator Removal and Installation |
| Power Shuttle Transmission | 71-181 | Transmission Lubrication and Oil Filter, Special Tools, Stall Test Check Sheets, Oil Pump, Transmission Removal and Installation, Pressure and Flow Tests, Housing Overhaul, Troubleshooting |
| Power Shuttle External Controls | 182-205 | Hydraulic Control Valve Exploded View, Four Wheel Drive Valve, Valve Disassembly, Inspection and Assembly |
| Power Shuttle Internal Components | 206-269 | Input Shaft, Secondary Shaft, Primary Shaft, Reverse Shaft, Shaft Inspection and Assembly, Backlash Adjustment |
| Torque Converter | 270-276 | Exploded View, Flywheel Towing Plate, Converter, Oil Pump, Transmission Interface |
| Front Axle System | 277-368 | Powered and Non-Powered Front Axle, Bevel Gear and Differential, Final Drive Hubs, Steering Knuckles, Toe-In Adjustment, Axle Testing, Troubleshooting |
| Rear Axle System | 369-446 | Powered Rear Axle, Oil Change, Axle Beam Trumpet Group, Differential, Bevel Pinion, Epicyclic Reduction Gears, Wheel Hub, Troubleshooting |
| Brakes and Controls | 447-476 | Hydraulic Service Brakes, Brake Discs, Brake Pedal, Master Cylinder, Brake Assembly, Air Bleeding, Parking Brake |
| Hydraulic Systems | 477-656 | Hydraulic Specifications, Pressure and Flow Testing, Reservoir and Pump Service, Loader Valves and Cylinders, Backhoe Valves and Cylinders, Cylinder Repair, Hydraulic Troubleshooting |
| Frames and Ballasting | 657-666 | Stabilizer Removal and Installation |
| Steering | 667-712 | Steering Column, Hydraulic Steering Control Valve, Relief and Shock Valves, Control Valve Overhaul, Steering Relief Test, 2WD and 4WD Steering Cylinders |
| Wheels | 713-732 | Front and Rear Wheel Removal and Installation, Mounting Nut Torque, Tire Sizes, Inflation Pressures |
| Cab Climate Control | 733-774 | Heating, Blower Motor, Heater Core, Air Conditioning Controls, Refrigerant Recovery and Charging, Compressor, Receiver Drier, Condenser, Evaporator |
| Electrical Systems and Wiring Diagrams | 775-971 | Harness and Connector Identification, Electrical Schematic Sheets, Power Distribution and Charging, Starting, Engine Control, Lighting, Instrument Cluster, Cab Accessories |
| Starter, Alternator and Wipers | 972-990 | Starter Removal and Installation, Alternator Removal and Installation, Drive Belt, Wiper Motor Removal and Installation |
| Front Loader and Bucket | 991-1006 | Loader Arm Removal and Installation, Bucket Removal and Installation |
| Booms, Dippers and Buckets | 1007-1032 | Sliding Support, Boom Removal and Installation, Dipper Arm Removal and Installation, Optional Extendable Dipstick |
| Accessories | 1033-1046 | Electrical Product Overview, Telematics Preparation, Installation and Removal |
| Platform, Cab, Bodywork and Decals | 1047-1089 | Cab Removal and Installation, Cab Door, Door Glass, Windshield, Rear Window, Hood, Special Tool Index |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Transmission oil 2WD | 16.00 l (4.23 US gal) | p. 31 |
| Transmission oil 4WD | 18.50 l (4.89 US gal) | p. 31 |
| Rear axle oil | 17.10 l (4.52 US gal) | p. 31 |
| Engine oil - BS III | 11.00 l (2.91 US gal) | p. 31 |
| Hydraulic oil, total | 130 l (34.34 US gal) | p. 31 |
| Refrigerant charge | 1.3 kg (2.87 lb) | p. 748 |
| Powered front axle dry weight | 264 kg (582.02 lb) | p. 280 |
| Rear axle dry weight | 420 kg (926 lb) | p. 372 |
| Front tires, 2WD | 9.00-16, 16 PR | p. 728 |
| Front tires, 4WD | 12.5-18, 12 PR | p. 728 |
| Rear tires, standard rear | 16.9-28, 12 PR | p. 728 |
| Rear tires, heavy duty rear | 14.00-25, 20 PR | p. 728 |
| Front tire inflating pressure, 2WD | 5.52 bar (80 psi) | p. 728 |
| Front tire inflating pressure, 4WD | 2.41 bar (35 psi) | p. 728 |
| Rear tire inflating pressure, standard rear | 1.79 bar (26 psi) | p. 728 |
| Rear tire inflating pressure, heavy duty rear | 2.76 bar (40 psi) | p. 728 |
| Front wheel nut torque | 196 N·m (145 lb ft) | p. 728 |
| Rear wheel nut torque | 490 N·m (361 lb ft) | p. 728 |
| Steering system working pressure | 140 bar (2030 psi) | p. 676 |
| Steering shock valve adjustment | 200 bar (2900 psi) | p. 676 |
New Holland B80B Common Problems This Manual Covers
Power shuttle gear shift won't engage
The power shuttle transmission troubleshooting table blames a damaged shifter when a gear will not engage, and the fix is to replace it. Use the transmission removal and installation steps to get the unit out. Then follow the internal components procedures for shaft inspection, assembly and backlash adjustment.
Manual Section: Power shuttle transmission - Troubleshooting p. 179Power shuttle transmission overheating
The power shuttle troubleshooting table lists a parking brake that was inadvertently activated as a cause of overheating, so release it. If the heat comes back, work through the pressure and flow tests and the stall test check sheets in the same section.
Manual Section: Power shuttle transmission - Troubleshooting p. 178Hydraulic cylinder internal leakage
The hydraulic systems generic troubleshooting table lists air in the hydraulic circuit as a cause of internal leakage in a cylinder. Bleed the air out of the hydraulic system before you pull the cylinder for a reseal. If it still leaks after bleeding, use the cylinder repair procedures in the same section to strip it down.
Manual Section: Hydraulic systems generic sub-group - Troubleshooting p. 653Scored cylinder tube ID
The hydraulic systems troubleshooting table traces a scored cylinder tube bore to a filter that is clogged or no longer filtering. Replace the filter first; reservoir and pump service steps are in the same section. Then repair the damaged cylinder using the cylinder repair procedures.
Manual Section: Hydraulic systems generic sub-group - Troubleshooting p. 653Frequently Asked Questions
Which New Holland backhoe loader does this service manual cover?
It is New Holland service manual 48143704, 1st edition English, April 2017, written for the B80B backhoe loader. It gives separate figures for 2WD and 4WD builds. It also splits them for standard rear and heavy duty rear tires. p. 1
How much oil do the B80B transmission and engine take?
Transmission oil is 16.00 l (4.23 US gal) on a 2WD and 18.50 l (4.89 US gal) on a 4WD. Engine oil (BS III) is 11.00 l (2.91 US gal). p. 31
What pressures are set for the B80B steering hydraulics?
System working pressure is 140 bar (2030 psi). The shock valve adjustment is 200 bar (2900 psi). p. 676
What front tires and wheel nut torques are listed?
A 2WD runs 9.00-16, 16 PR front tires and a 4WD runs 12.5-18, 12 PR. Front wheel nuts go to 196 N·m (145 lb ft) and rear wheel nuts go to 490 N·m (361 lb ft). p. 728
Does the manual include wiring diagrams?
Yes. The harnesses and connectors section has 18 electrical schematic sheets. They run from sheet 01 power distribution/charging system to sheet 18 dome light. Sheet 02 covers the starting system, sheet 04 engine control, sheet 05 drives and sheet 06 hydraulics. p. 927
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