Description:
Make / Model: Diedrich D-120
Year: 1996
Carrier: Marooka Rubber Track Carrier
Engine: John Deere Diesel
Hours: 7,860
Location: Northeast US
Condition: Operational / Currently Working
Overview
This 1996 Diedrich D-120 is mounted on a Marooka rubber track carrier and is currently operational and in regular use. Equipped with a rod handler, rod clamp, breakout system, automatic hammer, dual pump package, and three-winch configuration, this is a well-equipped drilling platform built for demanding geotechnical and environmental drilling projects.
The D-120 is known for its production capability, dependable design, and versatility in a wide range of drilling conditions. Combined with the low-ground-pressure Marooka undercarriage, this rig offers excellent access to soft ground and environmentally sensitive job sites.
Key Specifications
• 1996 Diedrich D-120
• Marooka rubber track carrier
• John Deere diesel engine
• 7,860 hours
• OEM rod clamp
• Breakout table and wrench
• Automatic hammer
• Rod handler system
• 4-speed rotary head with high/low range transmission
• 300-gallon steel water tank
• On-deck and under-deck rod and casing storage
• Front-mounted auger rack
Winch Package
• Main winch
• Tool winch
• Wireline winch
A complete winch package allows the rig to handle a variety of drilling and sampling applications.
Pump Package
• 3L6 Moyno pump
• Triplex pump
• 300-gallon steel water tank
The dual-pump configuration gives operators flexibility for a wide variety of drilling conditions and applications.
Condition
The rig is operational and currently being used. Seller rates overall condition as fair. Recent maintenance includes new rotary box seals and a new Kelly assembly.
The seller notes the Marooka cab sheet metal could use repair and the machine would benefit from paint and cosmetic freshening. Mechanically, however, the rig remains active and productive.
Optional Reconditioning Available
Want the rig cleaned up before it arrives?
Drill Rig Marketplace can run this unit through our shop and tailor the level of reconditioning to fit your budget and needs.
Available services include:
• Full mechanical inspection
• Hydraulic hose and cylinder repairs
• Electrical troubleshooting
• Pump and winch servicing
• Marooka cab repairs
• Sandblast and repaint
• Custom company colors and branding
• General reconditioning and upgrades
Straight Talk
This isn't a polished, late-model rig, but it's a working D-120 with the options that matter. Rod handler, breakout, rod clamp, auto hammer, Moyno pump, triplex pump, and a full winch package are already there. The Marooka cab could use some cosmetic attention and a fresh coat of paint wouldn't hurt, but the hard-to-buy components are already on the machine. If you're looking for a productive track rig without spending half a million dollars, this one deserves a serious look.
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.
