Case IH HYDRO-100 Tractor Parts
Hydro 100 parts and accessories
The Case IH Hydro 100 tractor, manufactured from 1977 to 1984, was a popular choice for farmers seeking a versatile and reliable machine. Powered by a 301 cubic inch IH diesel engine producing approximately 85 PTO horsepower, its hydrostatic transmission provided smooth and efficient operation. The Hydro 100 was known for its ease of use and adaptability to various farming tasks.
The Case IH Hydro 100 was introduced in 1977 and remained in production until 1984, becoming a staple on many farms. It's equipped with a 301 cubic inch International Harvester (IH) diesel engine, delivering around 85 PTO horsepower. The hydrostatic transmission was a key feature, offering infinite speed control and simplifying operation compared to traditional gear transmissions. The PTO is typically a 540 RPM independent type. Hydraulic capacity is approximately 14.5 GPM, with options for one or two remote valves, supporting various implements. The 3-point hitch is a Category II, providing ample lift capacity for a range of attachments. The Hydro 100 was commonly used for row crop work, hay baling, livestock feeding, and light tillage operations. It stood out from other models in the Case IH lineup due to its hydrostatic drive, which provided increased operator comfort and efficiency. The Hydro 100 was a popular all-around tractor suitable for a variety of jobs on farms of various sizes.
Specifications
| Engine | International Harvester (IH) 85 HP 301 ci Diesel |
|---|---|
| PTO HP | 85 HP @ 540 RPM |
| Transmission | Hydrostatic Infinite Speeds |
| Hydraulics | 14.5 GPM, 1-2 remotes |
| 3-Point Hitch | Category II, 4500 lbs |
| Fuel Capacity | 30 gallons |
| Weight | 8,000 lbs |
| Years Produced | 1977-1984 |
Maintenance Tips
- Change engine oil and filter every 250 hours using a high-quality diesel engine oil.
- Inspect and maintain hydraulic fluid levels regularly, changing the hydraulic filter every 500 hours.
- Check and clean the fuel filter regularly to prevent fuel system issues and ensure optimal engine performance. Use fuel stabilizer during seasonal storage to prevent fuel degradation.
- Before storing the tractor for the off-season, drain the fuel tank, change engine oil and filters, grease all fittings, and protect tires from direct sunlight.
History & Background
The Case IH Hydro 100 was launched in 1977 as part of the International Harvester lineup before the Case IH merger. It represented a step forward in tractor technology with its hydrostatic transmission, offering increased ease of use. The Hydro 100 played a significant role in popularizing hydrostatic transmissions in agricultural tractors.
Frequently Asked Questions
What engine is in the Case Ih Hydro 100?
The Case IH Hydro 100 is powered by a 301 cubic inch (4.9L) International Harvester (IH) diesel engine, producing approximately 85 horsepower.
What is the PTO horsepower on a Hydro 100?
The PTO horsepower on the Case IH Hydro 100 is approximately 85 HP, operating at 540 RPM.
What oil filter fits the Hydro 100?
The oil filter for the Case IH Hydro 100 is commonly a Fram PH2951 or a Wix 51794. Always verify compatibility with your specific model and engine configuration. Cross-reference with other brands like NAPA or Baldwin is also possible.
What are common parts needed for the Hydro 100?
Common wear parts for the Hydro 100 include engine oil filters, fuel filters, hydraulic filters, fan belts, hydraulic cylinder seal kits, steering components (tie rod ends), clutch disc (if equipped with a manual transmission), and PTO clutch parts.

1651487C1 - STARTER DRIVE
SKU: 1651487C1
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121629C3 - Neutral Safety Switch
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1115510 - SOLENOID SWITCH
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1100585 - Alternator
SKU: 1100585
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1100583 - Delco Alternator
SKU: 1100583
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107655C1 - Power-Cab Solenoid
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523861R2 - Crank Handle
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522839R1 - Upper Latch Spring
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49B52 - leveling screw Housing
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49B51 - leveling screw Housing
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483858R1 - Hammerstrap Spacer
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SKU: 406244R2
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398372R11 - Cat II Lower Pull Arm Link (RH)
SKU: 398372R11
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398371R11 - Cat II Lower Pull Arm Link (LH)
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397096R2 - Leveling Screw (RH) Assembly
SKU: 397096R2
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