Case IH Magnum 225, 250, 255, 280, 310, Magnum 335 Tractor Pdf Repair and Service Manual

Case IH Magnum 225, 250, 255, 280, 310 & 335 Tractor PDF Repair & Service Manual

Large-frame Magnum tractors spend their working lives pulling heavy tillage equipment, running high-capacity hydraulic implements, powering PTO-driven machinery and carrying substantial loads through the drivetrain. When a tractor develops a hydraulic pressure problem, transmission fault, PTO issue or engine-performance complaint, a general maintenance guide is not enough. The Case IH Magnum 225, 250, 255, 280, 310 and 335 Tractor Repair Service Manual is intended for the deeper workshop work behind those failures.

This publication is identified as Case IH manual 87754567 and is specifically associated with the six Magnum models listed above. Its coverage moves from the distribution and hydraulic systems into the engine, fuel and injection system, electronic controls, fault codes, powershift transmission, PTO, axles, 2WD/4WD system, steering, brakes, cab systems and rear hitch.

Magnum Model Family — Machine Information

Model	Engine / Displacement	Published Rated Power*	Peak Torque	Transmission
Magnum 225	Cummins 6TAA-8304, 8.268 L	224 hp / 167 kW	1,117 Nm @ 1,400 rpm	18F / 4R Powershift
Magnum 250	Cummins 6TAA-8304, 8.268 L	251–252 hp / approx. 187 kW	1,271 Nm @ 1,400 rpm	18F / 4R Powershift
Magnum 255	CNH/Cummins-based 8.3–8.9 L configuration, market dependent	Model/configuration dependent	Configuration dependent	Powershift
Magnum 280	6TAA-8304 / later 6TAA-9004, 8.268–8.880 L	279 hp / approx. 208 kW	1,395 Nm @ 1,400 rpm	18F / 4R Powershift
Magnum 310	Cummins 6TAA-9004, 8.880 L	309 hp / approx. 230 kW	1,566 Nm @ 1,400 rpm	18F / 4R Powershift
Magnum 335	Cummins 6TAA-9004, 8.880 L	309–335 hp depending rating/market	Approx. 1,566 Nm	18F / 4R Powershift

*Power ratings differ between published ISO/rated and maximum-power figures, markets and production configurations. The Magnum 255 also has market-specific specifications, so its exact engine and output should be confirmed against the tractor PIN.

Hydraulic Capacity That Matches Heavy Implement Work

Hydraulic Specification	Magnum 225–310	Magnum 335
Hydraulic Pump Type	Variable-displacement, pressure/flow-compensated	Variable-displacement, pressure/flow-compensated
Standard Maximum Pump Flow	166 L/min	175 L/min
High-Flow Configuration	224 L/min	236 L/min
Twin-Flow Configuration	166 + 118 L/min	175 + 122 L/min
Maximum System Pressure	210 bar / approx. 3,046 psi	210 bar / approx. 3,046 psi
Remote Valves	Up to 4, with optional 5th remote valve	Up to 4, with optional 5th remote valve
Remote Valve Timer	0–30 seconds	0–30 seconds

These hydraulic specifications explain why the Magnum platform is commonly paired with demanding implements. The repair manual therefore spends substantial attention on the primary hydraulic power system and electro-hydraulic remote valves, rather than limiting hydraulic information to fluid changes and filter replacement.

What Makes Manual 87754567 Valuable in the Workshop?

The manual follows the tractor from the power source to the implement connection. That means a repair can be traced through the relevant system instead of treating the symptom as an isolated component failure.

Manual Section	Repair & Service Coverage
Distribution Systems	System-level distribution information and hydraulic/electrical power routing
Primary Hydraulic Power	Main hydraulic power generation and pressure/flow circuits
Electro-Hydraulic Remote Valve	Remote-valve components and hydraulic control functions
Pneumatic System	Air-system components and related service
Electrical Power	Electrical power generation and distribution
Lighting	Lighting-system components and circuits
Electronic System	Electronic controls and related components
Fault Codes	Electronic fault-code information for applicable systems
Engine	Engine service and repair procedures
Fuel & Injection	Fuel supply and injection-system service
Engine Cooling	Cooling-system components and service
Lubrication	Engine lubrication-system information
Starting System	Starter and starting-system service
Power Coupling	Fixed coupling and drop-box related service
Powershift Transmission	Transmission components and repair procedures
Rear PTO	Hydraulic rear-PTO system and related components
Front Axle	Front axle and supporting components
2WD / 4WD System	Hydraulic 2WD/4WD engagement system
Steering	Hydraulic steering system
Service Brake	Hydraulic service-brake system
Parking Brake	Hydraulic parking-brake system
Cab & Operator Controls	Operator seat, user controls and platform components
HVAC	Heating, ventilation and air-conditioning
Rear Hitch	Rear hitch and working-arm related systems

When the Hydraulic System Stops Delivering Expected Performance

Hydraulic problems on a Magnum can appear in several different ways. A remote valve may fail to deliver the expected flow, an implement may respond slowly, hydraulic functions may become inconsistent as oil temperature changes, or the tractor may show a problem in the electronic control system.

The primary hydraulic power system section gives the technician a starting point for understanding the pressure-compensated/flow-compensated hydraulic architecture. The publication also separates the electro-hydraulic remote valve system so that valve-related faults can be approached at the component and circuit level.

For a high-flow Magnum operating a demanding hydraulic implement, this distinction matters. A slow implement does not automatically mean the main pump needs replacement. The fault could be associated with the remote valve, control circuit, hydraulic pressure, flow path or another part of the system.

Engine Differences Across the Magnum Range

The six models do not use one identical engine configuration. The Magnum 225 and 250 are associated with the 8.3 L 6TAA-8304 family, while later Magnum 280 configurations and the 310/335 move into the 8.9 L / 8.88 L 6TAA-9004 family. The Magnum 255 requires additional attention because market and production configuration affect the engine specification.

The repair manual therefore provides dedicated sections for:

• Engine mechanical service
• Fuel and injection system
• Engine coolant system
• Lubrication system
• Starting system
• Electronic engine-related information
• Engine-related fault-code information

This is useful when an engine complaint goes beyond routine maintenance—for example, difficult starting, fuel-system problems, abnormal cooling behavior, lubrication concerns or an electronic fault that requires more than a visual inspection.

PowerShift Transmission and Driveline Service

The Magnum platform uses a full powershift transmission, with published specifications for this generation identifying an 18-forward/4-reverse arrangement. That makes the transmission section one of the most important parts of the service manual for tractors performing heavy tillage or high-drawbar work.

The publication's power-train coverage includes the fixed coupling, drop box, powershift transmission, rear PTO, front axle and 2WD/4WD system. The information is arranged so that drivetrain service can be followed from the engine-to-transmission power connection through the final drive and PTO systems.

For example, a tractor with abnormal power transfer should not automatically be diagnosed as a failed transmission. The repair path can involve the power coupling, drop box, transmission, front axle or 4WD engagement system depending on the observed symptom.

PTO and Implement Power

The Magnum's PTO is designed for tractors that regularly operate PTO-driven equipment, so the repair information extends beyond simply identifying PTO speeds.

PTO Information	Published Configuration
Standard PTO Shaft	20 splines, 1-3/4 in.
Optional 1000 rpm Shaft	21 splines, 1-3/8 in.
Optional 540 rpm Shaft	6 splines, 1-3/8 in.
Rear PTO Manual Coverage	Hydraulic rear PTO system and associated components

This makes the manual useful for PTO-related repair work where clutching, hydraulic control or mechanical components need to be investigated rather than simply changing an external adjustment.

4WD, Front Axle and Steering

High-horsepower tractors transfer substantial loads through the front axle when working with heavy implements. The manual includes dedicated sections for the front axle, hydraulic 2WD/4WD system and hydraulic steering.

The 2WD/4WD section is particularly relevant when front-wheel assist will not engage, remains engaged incorrectly, or behaves differently under operating conditions. The steering and brake sections provide separate repair information rather than combining all chassis functions into a generic “tractor maintenance” category.

Electronic Controls and Fault Codes

Modern-for-its-era Magnum tractors rely on electronic systems alongside mechanical and hydraulic components. The manual therefore includes an electronic system and fault-code section.

This is important for intermittent faults. A warning or fault code may indicate an electrical or electronic condition, but the actual repair can involve a sensor, wiring connection, controller, actuator or hydraulic component. Using the fault-code information together with the relevant system section provides a more reliable diagnostic path than replacing parts based solely on a warning message.

Cab, Operator Controls and Climate System

The repair coverage continues into the operator environment. The manual includes the operator seat, user controls, operator platform and heating/ventilation/air-conditioning system.

For tractors that spend long hours performing field work, HVAC and operator-control problems are not minor inconveniences. A failed control, damaged seat component or HVAC fault can affect machine usability and operator comfort, and the manual provides service information for those areas alongside the main mechanical systems.

Manual Specifications

Manual Detail	Information
Publication Number	87754567
Manual Type	Case IH Agricultural Repair Manual
Models Covered	Magnum 225, Magnum 250, Magnum 255, Magnum 280, Magnum 310, Magnum 335
Publication Date Identified	24 December 2007
Language	English
Format	PDF
Electrical Information	Electrical power, lighting and electronic-system coverage
Fault Codes	Included
Hydraulic Information	Primary hydraulic power and electro-hydraulic remote-valve systems
Powertrain	Power coupling, drop box and powershift transmission
PTO	Hydraulic rear PTO system
Chassis	Front axle, hydraulic 2WD/4WD, steering, service brake and parking brake
Cab Systems	Operator controls, seat, platform and HVAC
Reported PDF Page Count	Not stated because available digital reproductions vary
Reported PDF Size	Not stated because available reproductions differ in compression and packaging

Manual identification note: The publication number 87754567 is the important identifier for this six-model version. Digital sellers sometimes combine, rename or package Magnum publications differently, so the publication number and model list should be checked before ordering.

Repair Areas by Real-World Tractor Problem

Problem	Relevant Manual Area
Hydraulic implement is slow	Primary hydraulic power system and electro-hydraulic remote valve
Remote valve function is inconsistent	Electro-hydraulic remote-valve system
4WD will not engage correctly	Hydraulic 2WD/4WD system and front axle
Transmission requires major service	Power coupling, drop box and powershift transmission
PTO operation is abnormal	Hydraulic rear PTO system
Engine has a fuel or injection problem	Engine and fuel/injection system
Tractor reports an electronic fault	Electronic system and fault-code sections
Cooling system is not maintaining normal operation	Engine coolant system
Starting system fault	Starting-system section
Steering performance is abnormal	Hydraulic steering system
Brake problem	Service-brake or parking-brake sections
Cab climate system requires repair	Heating, ventilation and air-conditioning

Digital Manual Features

• English-language Case IH repair information
• PDF format for workshop and field reference
• Searchable content in compatible digital editions
• Printable technical pages
• Detailed repair and service procedures
• Hydraulic-system information and schematics
• Electrical and electronic-system information
• Fault-code reference information
• Powertrain and transmission service coverage
• Engine, PTO, axle, steering and brake information
• Cab and HVAC service information

Frequently Asked Questions

Which Case IH Magnum tractors are covered by manual 87754567?

The identified publication covers the Magnum 225, 250, 255, 280, 310 and 335 tractors.

What is the publication number for this Magnum repair manual?

The publication number is 87754567. The identified manual sample is dated 24 December 2007.

Does the manual cover the Magnum 255?

Yes. The 87754567 manual specifically lists the Magnum 255 together with the 225, 250, 280, 310 and 335.

Does this manual include hydraulic repair information?

Yes. It includes the primary hydraulic power system and a separate section for the electro-hydraulic remote valve system.

Does it cover the powershift transmission?

Yes. The power-train section includes the powershift transmission along with power coupling and drop-box information.

Does the manual cover the 4WD system?

Yes. A dedicated hydraulic 2WD-4WD system section is included, together with front-axle and steering information.

Does it include PTO repair information?

Yes. The manual contains a dedicated hydraulic rear PTO section and associated power-train information.

Does it contain electrical wiring and electronic information?

Yes. The publication includes electrical power, lighting, electronic-system and fault-code sections. The exact diagrams and component coverage depend on the tractor configuration.

Which engines are used across the Magnum 225–335 range?

The 225 and 250 are associated with the 8.3 L 6TAA-8304 family, while later 280, 310 and 335 configurations use 8.3/8.9 L engine variants, with the 6TAA-9004 used on the larger models. The Magnum 255 has market-specific engine configurations, so the tractor PIN should be checked.

What hydraulic pump capacity is available?

The published Magnum specifications identify variable-displacement pressure/flow-compensated hydraulic pumps with standard flow around 166 L/min on the 225–310 models and 175 L/min on the 335, with higher-flow and twin-flow configurations available.

Can this PDF be used on every Magnum 225–335 tractor?

Compatibility should be confirmed by model, production date, market and tractor PIN. The 87754567 publication specifically identifies the six-model group, but Magnum configurations changed during production, particularly around engines and regional specifications.

A Workshop Reference for the High-Horsepower Magnum Platform

The Case IH Magnum 225, 250, 255, 280, 310 and 335 Repair Service Manual is useful when a tractor repair reaches the point where routine maintenance instructions are no longer enough. Its coverage follows the systems responsible for getting power from the engine to the ground and hydraulic implement: engine, fuel injection, electronics, fault codes, hydraulic power, remote valves, powershift transmission, PTO, front axle, 2WD/4WD, steering, brakes and rear hitch.

For a Magnum working heavy tillage, large hydraulic implements or PTO equipment, this system-level coverage provides a much stronger repair reference than generic tractor maintenance information. Before beginning a major repair, match the publication 87754567 to the tractor's model, production configuration and PIN so that the procedure being followed corresponds to the machine in the workshop.