Dressta TD-9H Crawler Dozer

The Dressta TD-9H Crawler Dozer is a robust mid-sized track-type tractor ideal for utility dozing, fine grading, and forestry applications. Developed from the legacy of International Harvester designs, the TD-9H offers dependable performance, operator comfort, and strong parts interchangeability with older IH models.

Engine

• Model: International/Navistar D239 or optional Cummins B4.5

• Type: 4-cylinder, turbocharged diesel

• Displacement: 239 cu in (3.9 L)

• Horsepower: 75 HP (net)

Transmission

• Type: Hydrostatic drive

• Gears: Infinitely variable speed control in forward and reverse

• Controls: Dual joystick (steering and speed integrated)

Hydraulic System

• Pump Flow: Approx. 17–18 GPM

• Relief Pressure: 2,500 PSI

• Blade Controls: 3-way (lift, tilt, angle options depending on blade type)

Dimensions & Performance

• Operating Weight: ~18,500 lbs

• Blade Width: 8 ft (standard six-way or straight blade)

• Track Width: 16 to 20 inches depending on configuration

• Ground Clearance: ~15 inches

Maintenance Essentials

• Hydraulic filters: Replace every 250 hours

• Final drive oil: Check every 100 hours, change every 500

• Track tension and idler alignment should be inspected weekly

• Commonly replaced parts:

  • TD-9H Steering Pumps

  • TD-9H Hydraulic Cylinder Seal Kits

  • TD-9H Final Drive Components

  • TD-9H Undercarriage Parts

Common Issues & Quick Fixes

• Hydrostatic drive lag or slippage: Usually resolved by inspecting and replacing worn drive pumps or flushing contaminated fluid.

• Blade drift or weak lift: Typically caused by worn hydraulic cylinder seals—use a replacement seal kit.

• Track wear: Replacing worn pins, bushings, or adjusting track tension often restores alignment.

Serial Number Info

• Location: Left side of the frame near the engine compartment

• Format: Often starts with “T” followed by numbers, specific to the TD-9H model range

Pro Tip: Keep the cooling system clean and check radiator screens daily in dusty or forestry work environments. Use OEM-spec fluids to protect the hydrostatic transmission.