Description:
1998 Diedrich D-120 Drill Rig – Rebuilt – 2009 International WorkStar
Make / Model: Diedrich D-120
Year: 1998 (Rebuilt 2010)
Carrier: 2009 International WorkStar (10-wheel)
Mileage: 75,350 km (~46,800 miles)
Transmission: Allison Automatic
Location: Canada
Condition: Good – Maintained, Work-Ready
Overview
Complete Diedrich D-120 drilling package mounted on a 2009 International WorkStar, offering a strong combination of drilling capability and a modern, low-kilometer carrier.
The drill was rebuilt in 2010 and has been regularly maintained since. With a 30-ft mast, dual pump setup, and included tooling, this is a ready-to-work production rig suited for geotechnical and environmental drilling applications.
Key Specifications
• Deck Engine: John Deere 6-cylinder diesel
• Rotary: 4-speed transmission with high/low selector
• Mast: 30 ft
• Water Pump: Moyno 6L8
• Auxiliary Pump: CAT piston pump
• Rebuild Year: 2010
Carrier
2009 International WorkStar (10-wheel)
• Mileage: 75,350 km (~46,800 miles)
• Allison automatic transmission
• Double cab configuration
• Well maintained with current inspections
Deck & Equipment
• Aluminum water tank (200-gallon capacity)
• Aluminum and galvanized steel deck
• Galvanized auger and tubing rack
• Hydraulic leveling jack
• Aluminum tool storage boxes
• 3,500-watt inverter
• Webasto heating system (cab + engine)
Included Tooling
• 50 feet of auger
• Water swivel
• Adapters
Condition
• Regularly maintained unit
• Rebuilt drill (2010)
• Clean, solid truck with low kilometers for age
• Operational and ready to go to work
Why This Rig
• D-120 platform = larger capacity than typical geotech rigs
• Rebuilt drill with proven reliability
• Low-km WorkStar carrier (big value driver)
• Includes tooling to get started immediately
• Heated system for cold-weather operation
Optional Reconditioning (Available)
For buyers looking for a turnkey package, this rig can be run through our shop at Drill Rig Marketplace prior to delivery.
Available services can include:
• Full inspection and service
• Hydraulic and mechanical refresh
• Hose and system cleanup
• Cosmetic repaint in buyer’s company colors
Turn this into a fully dialed-in, job-ready rig tailored to your operation.
Summary
A well-maintained Diedrich D-120 mounted on a low-kilometer International WorkStar, offering a strong combination of power, reliability, and included tooling. With a previous rebuild and consistent maintenance, this rig is ready to continue working, with optional reconditioning available for buyers looking to take it to the next level.
The Diedrich Drill D-120 is a drilling rig in the Diedrich Drills product line, designed for geotechnical, environmental, and foundation drilling applications. It is used for soil sampling, borehole drilling, and related subsurface investigation work. The D-120 is typically configured for track-mounted or truck-mounted operation depending on application requirements and may be equipped with hydraulic drill feed, rotary drilling components, and support systems for auger, hollow stem auger, and mud rotary methods. Diedrich drill rigs are known for field serviceability and adaptability across site investigation and construction drilling tasks.
