New Holland U80C Tier 4 Tractor Backhoe Service Manual PDF

This workshop service manual covers the New Holland U80C Tier 4 tractor backhoe. It provides detailed information on the machine’s mechanical, hydraulic, electrical, transmission, axle, steering, braking, and engine systems, together with service specifications, troubleshooting information, and step-by-step repair procedures supported by technical illustrations and circuit diagrams.

The manual is intended for qualified service and repair personnel. Follow the manufacturer’s recommended procedures, safety precautions, specifications, and use the appropriate service tools when required.

Service and Repair Coverage

The manual covers the Tier 4 engine and crankcase, fuel tanks, engine cooling system, and exhaust after-treatment system, including Exhaust Gas Recirculation (EGR) and the Diesel Particulate Filter (DPF). Detailed information is also provided for the Power Shuttle transmission, including its external controls and internal components.

The front and rear axle sections cover powered and non-powered axle systems, bevel gear sets, differentials, planetary and final drives, steering knuckles, shafts, and hubs. Brake coverage includes the parking brake, parking lock, and hydraulic service brake systems.

The hydraulic section explains the machine’s hydraulic systems and components, including pump control valves, fixed displacement pump, three-point hitch control valve and cylinder, remote control valves, reservoir, cooler, filters, safety and main relief valves, and the front loader bucket and tool quick coupler hydraulic systems.

The manual also covers the rear three-point hitch, hitches and drawbars, frame and ballasting systems, steering controls, hydraulic control components, cylinders, and front and rear wheels.

Electrical and electronic service information includes wiring harnesses and connectors, engine starting system, alternator, battery, external lighting, warning indicators, alarms, instruments, cab and platform harnesses, and cab engine controls. Fault code information is included to assist with troubleshooting and diagnosis.

Additional sections cover the front loader and bucket, loader arm, platform and cab components, bodywork, decals, machine shields and guards, and ROPS/FOPS protective structures.

Contents

INTRODUCTION
Engine
Engine and crankcase
Fuel tanks
Engine cooling system
Exhaust Gas Recirculation (EGR) - Diesel Particulate Filter (DPF) exhaust treatment
Transmission
Power Shuttle transmission
Power Shuttle transmission external controls
Power Shuttle transmission internal components
Front axle system
Powered front axle
Front bevel gear set and differential
Final drive hub, steering knuckles, and shafts
Non-powered front axle
Rear axle system
Powered rear axle
Rear bevel gear set and differential
Planetary and final drives
Brakes and controls
Parking brake / Parking lock
Hydraulic service brakes
Hydraulic systems
Hydraulic systems
Pump control valves
Fixed displacement pump
Three-point hitch control valve
Three-point hitch cylinder
Remote control valves
Reservoir, cooler, and filters
Safety and main relief valves
Front loader bucket hydraulic system
Tool quick coupler hydraulic system
Hitches, drawbars, and implement couplings
Rear three-point hitch external controls
Frames and ballasting
Frame
Ballasts and supports
Steering
Steering control
Hydraulic control components
Cylinders
Wheels
Front wheels
Rear wheels
Cab climate control
Air conditioning
Electrical systems
Electrical system
Harnesses and connectors
Engine starting system
Alternator
Battery
External lighting
Warning indicators, alarms, and instruments
Cab/Platform harnesses and connectors
Cab engine controls
FAULT CODES
Front loader and bucket
Arm
Bucket
Platform, cab, bodywork, and decals
Machine shields and guards
Protections - ROPS and FOPS
Cab

Delivery (Instant Download)

After payment, the PDF manual is sent to the email address provided with your order, usually within 1–10 minutes. Please check that your email address is correct at checkout.

Printing and Support

All pages of the PDF are printable. You can print the procedures you need for a particular job and keep them beside you in the workshop.

For questions about the manual or help with your order, contact our support team. After-sales support is available.