New Holland TN85FA - User Manual

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TN75FA – TN85FA – TN95FA TRACTORS

SERVICE MANUAL

SECTIONS

GENERAL GUIDELINES 00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ENGINE 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CLUTCH 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TRANSMISSIONS 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DRIVE LINES 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FRONT MECHANICAL TRANSMISSION 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

REAR MECHANICAL TRANSMISSION 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

POWER TAKE–OFF 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

BRAKES 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HYDRAULIC SYSTEMS 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

STEERING 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AXLE AND WHEELS 44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CAB AIR CONDITIONING SYSTEM 50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL SYSTEM 55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PLATFORM, CAB, BODYWORK 90. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

T E C H N I C A L S U P P O R T

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Summary

Section 10: Engine

Engine Removal and Installation Procedure

Detailed steps for removing and reinstalling the tractor engine.

Engine Disassembly and Assembly Procedure

Comprehensive guide for dismantling and reassembling the tractor engine components.

Summary

Section 10: Engine

Engine Removal and Installation Procedure

Detailed steps for removing and reinstalling the tractor engine.

Engine Disassembly and Assembly Procedure

Comprehensive guide for dismantling and reassembling the tractor engine components.

This document is a service manual for New Holland TN75FA, TN85FA, and TN95FA tractors, providing comprehensive instructions for maintenance, repair, and overhaul of various tractor systems. The manual is structured into several sections, each dedicated to a specific component or system of the tractor, ensuring a systematic approach to service operations.

Function Description:

The New Holland TN75FA, TN85FA, and TN95FA tractors are agricultural machines designed for a variety of farming tasks. As a service manual, this document's primary function is to guide technicians and owners through the detailed procedures required to maintain these tractors in optimal working condition, diagnose issues, and perform necessary repairs. It covers everything from routine inspections to complex component removal and installation, ensuring the longevity and reliable operation of the machinery. The manual emphasizes safety through warnings and cautions, highlighting the importance of proper handling of heavy parts and the use of appropriate tools and personal protective equipment.

Important Technical Specifications:

While the manual itself does not list general tractor specifications like engine power, weight, or dimensions on the cover page, it details the internal structure and service procedures for key technical systems. The table of contents outlines the major sections, indicating the depth of technical information available for each:

Engine (Section 10): Covers removal, installation, disassembly, and assembly of the engine, including components like the thermostatic valve, alternator, exhaust manifold, oil filter, injection pump, fuel pump, and starter motor. It also provides torque settings for various fasteners.
Clutch (Section 18): Details service procedures for the clutch system.
Transmissions (Section 21): Addresses the maintenance and repair of the tractor's transmission system.
Drive Lines (Section 23): Focuses on the drive lines, which transmit power from the transmission to the axles.
Front Mechanical Transmission (Section 25): Specific instructions for the front axle's mechanical transmission.
Rear Mechanical Transmission (Section 27): Specific instructions for the rear axle's mechanical transmission.
Power Take-Off (Section 31): Covers the PTO system, essential for operating various implements.
Brakes (Section 33): Provides guidance on the braking system, including service and trailer brake controls.
Hydraulic Systems (Section 35): Details the hydraulic pump, control valves, and associated piping.
Steering (Section 41): Instructions for the steering mechanism.
Axle and Wheels (Section 44): Covers the axles and wheels, including their removal and installation.
Cab Air Conditioning System (Section 50): Maintenance for the comfort system.
Electrical System (Section 55): Wiring and component service for the electrical system.
Platform, Cab, Bodywork (Section 90): Instructions for removing and installing the cab and other body components.

The manual references specific tools, such as bracket 380001613 for engine and axle positioning, tool 380000322 for injection pump gear extraction, and lifting hook 380000216 for cylinder head removal, indicating the need for specialized equipment for certain repairs. It also mentions the use of sealing compound (0.0787 in. (2 mm) diameter) for mating surfaces, emphasizing precision in assembly.

Usage Features:

The service manual is designed for practical use in a workshop environment. Its detailed, step-by-step instructions, accompanied by numerous diagrams and illustrations, make complex procedures understandable. Each step is clearly numbered and often includes an image reference, ensuring that the technician can follow along visually. For example, the engine removal process (Op. 10 001 10) starts with removing the cab, draining fluids, disconnecting hoses and pipes, and then systematically detaching components like the rear guard, front guard, drive shaft, and various control pipes. The re-fitting instructions often refer back to the disassembly steps in reverse order, with additional considerations for torque settings, cleaning, and sealing.

The manual's structure, with distinct sections for different systems, allows users to quickly navigate to the relevant information. The inclusion of "General Guidelines" suggests an introductory section covering common safety practices and general service principles applicable across all repairs. The emphasis on safety, with "DANGER" and "CAUTION" warnings, is a crucial usage feature, guiding users to perform tasks safely and prevent injury or damage to the equipment. The instruction to "NEVER USE FINGERS OR HANDS" to align fixing holes, but rather "appropriate tools," is a specific safety directive.

Maintenance Features:

The manual is fundamentally a maintenance and repair guide. It outlines both preventive and corrective maintenance tasks.

Preventive Maintenance: Instructions for draining fluids (e.g., oil from the rear transmission-gearbox housing, diesel from the tank), checking and replenishing fluids (referencing page 6, section 00 for product and quantity), and cleaning mating surfaces (e.g., before refitting the engine to the clutch box).
Corrective Maintenance: Detailed procedures for diagnosing and rectifying issues by removing, disassembling, inspecting, repairing, and reassembling components. For instance, the engine disassembly steps involve systematically removing parts like the thermostatic valve, alternator, exhaust manifold, and injection pump, which would be necessary for internal engine repairs or component replacement.
Specialized Tools: The manual frequently mentions specific tools (e.g., bracket 380001613, tool 380000322, lifting hook 380000216), indicating that proper maintenance often requires specialized equipment to ensure accuracy and prevent damage.
Torque Settings: The instruction to "Apply the torque settings listed on page 20" for engine re-fitting is critical for ensuring that fasteners are tightened to the correct specifications, which is vital for component integrity and preventing leaks or failures.
Sealing and Gaskets: The manual specifies the use of sealing compound and mentions the removal and replacement of gaskets (e.g., cylinder head gasket), highlighting the importance of proper sealing to prevent fluid leaks and maintain system pressure.
Systematic Approach: The logical flow of instructions, from cab removal to engine disassembly, ensures that maintenance tasks are performed in a systematic and efficient manner, reducing the risk of errors. The re-fitting instructions often include checks and adjustments (e.g., tensioning ropes, connecting pipes correctly) to ensure proper functionality after repair.

New Holland TN85FA Specifications

General

Type	Tractor
Engine Power	85 hp
Gears	12 forward and 12 reverse
Hydraulic System	Open center
PTO Power	75 hp
Transmission	12x12
Weight (lbs)	6, 393 lbs
Hydraulic Pump Flow	58 l/min
Hydraulic Flow	16.9 gpm
PTO Power (hp)	75 hp
PTO Speed	540/1000 rpm
Fuel Tank Capacity	26.4 gal