Market Position:
Essential technical documentation for owners, operators, and mechanics of IH McCormick B-250 and B-275 tractors, providing crucial repair and maintenance information not always found in earlier or general owner's manuals.
Value Proposition:
Provides essential, detailed information to keep these classic IH tractors operational and well-maintained, saving time and money on repairs.
Competitive Analysis:
This manual is specifically a 'Serviceman's Handbook,' differentiated from a general workshop manual (WSM) by its targeted focus on common service tasks and specific updates. The seller explicitly states another seller calling it a WSM is 'lying,' emphasizing its specialized nature.
Key Features:
Instant download, searchable, bookmarked for easy navigation, printable, English language, PDF format, covers specific model updates (B-250 steering, B-275 CRPTO).
Target Audience:
Prepared specifically for servicemen working on the B-250 and B-275 tractors.
Manual Coverage:
Comprehensive service and repair for International Harvester McCormick B-250 and B-275 tractors, with specific emphasis on later B-250 single drop arm steering and B-275 CRPTO (Constant Running Power Take-Off).
Estimated Page Count:
Not explicitly stated, but typical for a Serviceman's Handbook covering these systems would range from 200-400 pages.
Manual Type:
Serviceman's Handbook / Technical Service Manual
Format:
PDF (Downloadable)
Systems Covered:
Engine & Lubrication, Clutch, Transmission, Hydraulic System, Steering & Wheels, Glow Plug Circuit.
Steering System Detail:
Specific focus on the single drop arm steering found on later B-250 models, indicating detailed repair and adjustment procedures for this updated system.
Pto System Detail:
Coverage of the CRPTO (Constant Running Power Take-Off) introduced in the B-275, including its operation, maintenance, and troubleshooting.
Hydraulic System Components:
Covers the hydraulic pump, control valve, lift arms, auxiliary hydraulic outlets (if fitted), and associated plumbing. Procedures for testing hydraulic pressure and flow will be included.
Wheel And Tire Service:
Includes information on wheel bearing maintenance, tire pressure, and potentially wheel mounting/dismounting.
Procedures Included:
Routine maintenance, tune-ups, repair procedures, troubleshooting, and specific repair information for updated steering and PTO systems.
Troubleshooting Guidance:
The manual is designed for 'servicemen' and emphasizes information on work they are 'likely to be called on to do anytime,' implying comprehensive troubleshooting guides for common faults.
Component Removal Installation:
Covers procedures for removing and installing major components like the clutch, transmission parts, hydraulic pump, steering components, and engine parts.
Electrical System Diagnostics:
While the 'Glow Plug Circuit' is specifically mentioned, the manual may extend to basic electrical diagnostics for lighting and starting systems.
Adjustment Procedures:
Covers adjustments for clutch, brakes, steering, PTO engagement, and hydraulic controls.
Technical Depth:
Detailed service procedures suitable for professional servicemen, covering both routine maintenance and more complex repairs and overhauls.
Torque Specifications:
Expect detailed torque specifications for critical fasteners throughout the tractor, essential for correct assembly and preventing damage.
Timing Specifications:
If applicable to engine maintenance, procedures for checking and setting engine timing or injection timing will be included.
Special Tool Requirements:
The manual will likely list any specialized tools required for specific repair procedures, aiding in efficient servicing.
File Format Details:
PDF, searchable, bookmarked, indexed, compatible with Windows/Mac. Requires updated Adobe Acrobat Reader.
Searchability:
Yes, the PDF is searchable by keyword, greatly enhancing the speed of finding specific information.
Navigation:
Yes, includes convenient chapter bookmarks for easy navigation.
Print Options:
Users can print the entire manual or select specific pages/sections for on-the-job use.
Print Quality:
High-quality PDF allowing for clear printing of entire manual or selected sections.
Binding Type:
Digital Download (N/A for physical binding)
Paper Type:
Digital Download (N/A for physical paper type)
Engine Type:
Diesel (typically vertical, 4-stroke, indirect injection)
Bore And Stroke:
Specific engine bore and stroke dimensions for the IH diesel engines used in these models will be detailed in the manual.
Compression Ratio:
The manual will list the correct compression ratio for the engine, a key diagnostic parameter.
Cooling System:
Details on the radiator, thermostat, water pump, and coolant, including flush and refill procedures, will be covered.
Air Intake System:
Information on air filter maintenance and inspection for the engine's air intake system.
Typical Horsepower:
B-250: Approx. 25-30 PTO HP; B-275: Approx. 35-40 PTO HP. Specific figures detailed within the manual.
Fuel System Components:
Injection pump, injectors, fuel filters, lift pump. Details on operation, maintenance, and troubleshooting provided.
Glow Plug Circuit Coverage:
Dedicated section covering the glow plug circuit, crucial for diesel engine starting in cold conditions. Likely includes wiring diagrams, component testing, and replacement procedures.
Transmission Type:
Constant mesh, sliding gear type with multiple forward and reverse gears (e.g., 8 forward, 2 reverse typical).
Optional Features:
The B-275 features CRPTO (Constant Running Power Take-Off), which is a significant operational feature detailed in the manual. Other transmission options or variations might be covered.
Gear Selection Mechanism:
Manual shift lever, details on clutch operation and gear engagement provided.
Clutch Type:
Likely a single or dual-plate dry clutch. The manual will detail its inspection, adjustment, and replacement.
Wheelbase:
Specific to model, but generally in the range of 70-80 inches for this tractor class. Manual will provide exact dimensions.
Tire Sizes:
The manual will specify the standard and optional tire sizes for the front and rear axles.
Track Width Adjustments:
Information regarding adjustable track widths, if applicable, will be provided.
Operating Weight:
Typically around 3,000-4,000 lbs depending on configuration. Manual will have precise figures.
Engine Oil Change Interval:
Typically every 100-150 operating hours, but the manual will provide the exact recommended interval and oil specification.
Transmission Oil Change Interval:
Typical intervals for transmission and final drive lubrication service will be provided, often around 500-1000 operating hours.
Engine Oil Type:
Typically SAE 30 or 10W-30 diesel engine oil, but the manual will specify the precise viscosity grade and API classification recommended by IH for these engines.
Hydraulic Fluid Type:
Manual will specify the correct type and viscosity of hydraulic fluid for the tractor's hydraulic system, which may be a tractor universal fluid (TUF) or a specific hydraulic oil.
Transmission Fluid Type:
Manual will detail the recommended transmission oil or universal fluid for the gearbox and final drives.
Common Issues:
Given the age of these tractors, common issues can include wear in the steering system (addressed by the manual's focus on the single drop arm), hydraulic system leaks, clutch wear, and potential engine starting issues if glow plugs or injection components are worn. The manual is invaluable for diagnosing and rectifying these.
Pto Issues:
Specific guidance for the B-275 CRPTO system, addressing potential engagement, disengagement, or power delivery issues.
Steering System Wear:
Detailed procedures for addressing play or wear in the single drop arm steering system on later B-250 models.
Brand Heritage:
International Harvester (IH) has a long and storied history in agricultural machinery, known for robust and reliable tractors. McCormick is a historic farm equipment brand that became part of IH.
Model Evolution:
The B-250 and B-275 represent a significant line of British-built IH tractors from the mid-to-late 1950s and early 1960s, evolving from earlier models. The manual's focus on specific updates highlights ongoing development.
Key Developments:
The focus on 'later B-250 tractors' for steering and 'introduction of CRPTO in the B-275' highlights key engineering updates and variations within the model run that this manual addresses.
Production Period:
B-250: Circa 1955-1960; B-275: Circa 1957-1961. These models were produced primarily in the UK at the Doncaster Works.
