Case IH 644 Tractor Parts

644 parts and accessories

The Case IH 644 tractor, manufactured from 1973 to 1977, was a popular utility tractor known for its reliability and versatility. Powered by a robust diesel engine producing around 64 horsepower, it delivered ample power for various farm tasks. Its PTO horsepower made it ideal for operating implements like mowers, balers, and rotary cutters, making it a favorite among farmers needing a dependable workhorse.

The Case IH 644 entered the market in 1973 as part of the International Harvester (IH) line before the Case IH merger. Production continued until 1977. The 644 is equipped with an International Harvester D-239 diesel engine. This 4-cylinder engine boasts approximately 64 horsepower and a displacement of 239 cubic inches. A gasoline version with the C-200 engine was also available but less common. The tractor typically features a gear-type transmission with 8 forward and 2 reverse speeds. PTO horsepower is rated at around 54 HP, with a standard 540 RPM PTO. Hydraulic capacity is approximately 7.2 GPM, powering typically two rear remote valves. The 3-point hitch is a Category II, providing a lift capacity of around 3,750 lbs. The 644 found applications in row crop operations, hay production, livestock management, and light tillage work. What set it apart was its heavier build compared to smaller utility tractors and its ample power for implements that were common for farms of the era.

Specifications

Engine	International Harvester D-239 64 HP 239ci Diesel
PTO HP	54 HP @ 540 RPM
Transmission	Gear 8F/2R
Hydraulics	7.2 GPM, 2 remotes
3-Point Hitch	Category II, 3750 lbs lift
Fuel Capacity	19 gallons
Weight	5,512 lbs
Years Produced	1973-1977

Maintenance Tips

Engine Oil & Filter: Change the engine oil and filter every 125-250 hours, depending on operating conditions. Use a high-quality diesel engine oil meeting the manufacturer's specifications.
Hydraulic System: Check the hydraulic fluid level regularly and replace the hydraulic filter according to the owner's manual, typically every 500 hours. Inspect hydraulic hoses and fittings for leaks.
Fuel System: Use clean, high-quality diesel fuel. Change the fuel filter regularly to prevent fuel system contamination. Drain water from the fuel tank periodically.
Seasonal Storage: Before storing the tractor for the winter, fill the fuel tank to prevent condensation. Change the engine oil and filter, lubricate all grease fittings, and disconnect the battery. Store the tractor in a dry, covered location.

History & Background

The Case IH 644 (originally International Harvester 644) was introduced in 1973 as a mid-size utility tractor offering a balance of power and maneuverability. There were no major redesigns during its production run. The 644 became a reliable and long-lasting tractor for a wide range of farming operations. It represents a transitional era in agricultural machinery as International Harvester moved towards more modern designs.

Frequently Asked Questions

What engine is in the Case Ih 644?

The Case IH 644 typically has an International Harvester D-239 diesel engine, producing approximately 64 horsepower with a displacement of 239 cubic inches. A gasoline version with the C-200 engine was also available.

What is the PTO horsepower on a 644?

The PTO horsepower of the Case IH 644 is rated at around 54 horsepower, operating at 540 RPM.

What oil filter fits the 644?

Common oil filter cross-references for the Case IH 644 include Fram PH25, Wix 51269, and NAPA 1269. Always verify fitment with your parts supplier.

What are common parts needed for the 644?

Common wear parts for the Case IH 644 include engine oil filters, fuel filters, air filters, hydraulic filters, belts, hydraulic seals, steering components, clutch parts, and PTO clutch components.

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