International Harvester TD-8C Crawler Dozer

The International Harvester TD-8C Crawler Dozer is a mid-size dozer designed for versatility and ease of operation. As part of the proven TD-8 series, the “C” variant offered important upgrades over previous models, including improved hydraulics and a more powerful engine, while retaining the manual transmission and reliable mechanical systems that IH operators value for field serviceability.

Engine & Powertrain:

• Engine: International DT-239, 4-cylinder diesel

• Displacement: 239 cu in (3.9 L)

• Net Power: 75 hp

• Cooling System: Liquid-cooled

• Transmission: 5-speed manual with dry clutch

• Final Drives: Bull gear and pinion

• Top Travel Speed: ~5.8 mph

Hydraulic System:

• System Type: Open-center

• Pump Flow: 15–17 GPM

• Relief Pressure: ~2,200 PSI

• Blade Control: Lever-operated 2- or 3-function valve

• Blade Options: Straight blade or angle blade (manual tilt optional)

Dimensions & Performance:

• Operating Weight: ~16,000–17,500 lbs

• Blade Width: 8 ft (angle blade)

• Track Gauge: 60 in

• Ground Clearance: 14 in

• Overall Length (with blade): Approx. 138 in

• Drawbar Pull: ~18,000 lbs

Maintenance Essentials:

• Service Priorities:

  • Clutch adjustment and replacement

  • Blade cylinder seals and hydraulic line inspections

  • Track tensioning and carrier roller lubrication

• Common Issues:

  • Clutch drag or slip: Solve with IH TD-8C clutch kits

  • Leaky blade cylinders: Fix using TD-8C hydraulic seal kits

  • Track sag: Adjust tension or install new TD-8C recoil springs or adjusters

Pro Tips:

• Use a straightedge to check blade edge wear weekly to prevent uneven cutting

• Inspect control valve spools for sticking if blade response slows

• Maintain correct gear oil levels in final drives to avoid pinion damage

Serial Number Location:
Located on a plate near the operator’s left footrest or stamped on the left-side frame rail above the front idler.

Parts Support:
Get long-lasting TD-8C dozer parts from BrokenTractor.com, including clutch rebuild kits, hydraulic cylinders, and undercarriage wear items built to OEM specs.