International Harvester TD-7C Crawler Dozer

Description:

The International Harvester TD-7C Crawler Dozer is a compact, versatile track-type tractor ideal for grading, utility work, and light earthmoving. Popular for its easy maneuverability and mechanical simplicity, the TD-7C combines durable construction with ease of service, making it a favorite among contractors and landowners alike.

Engine

• Model: International D-239

• Type: 4-cylinder, naturally aspirated diesel

• Displacement: 239 cu in (3.9 L)

• Horsepower: Approx. 62 HP

Transmission

• Type: Powershift

• Speeds: 3 forward, 3 reverse

• Steering: Steering clutches with mechanical levers

Hydraulic System

• Pump Flow: ~13–15 GPM

• Relief Pressure: 2,000 PSI

• Controls: Dual lever setup for blade lift and tilt

Dimensions & Performance

• Operating Weight: Approx. 13,000 – 14,500 lbs

• Blade Width: 6.5 ft standard (straight or angle blade)

• Track Width: 14–16 inches

• Ground Clearance: ~13 inches

Maintenance Essentials

• Fuel and oil filters should be changed every 100 hours

• Track tensioning must be checked regularly to prevent undercarriage wear

• Final drive oil requires changing every 250–300 hours

• Common replacement parts include:

  • TD-7C Steering Clutch Kits

  • TD-7C Final Drive Seals

  • TD-7C Undercarriage Parts

  • TD-7C Blade Cylinder Seal Kits

Common Issues & Quick Fixes

• Steering difficulty or uneven turning: Likely worn or sticking steering clutches—clutch rebuild kits often resolve this

• Hydraulic leaks: Usually from blade lift cylinders—repair with a seal kit

• Loose tracks or excessive undercarriage wear: Caused by neglected tension or worn bushings

Serial Number Info

• Location: Left side of frame near operator’s seat or on the clutch housing

• Format: Typically begins with “TDC” or “40700” series depending on year

Pro Tip: Avoid over-greasing idlers—excess grease can damage seals. Grease until slight pressure is felt, then stop.