MAST The mast is available in 2 standard lengths for 15 ft(4.6m), and 20 Ft(6.1m) pulls. The maximum mast height is limited by the type of carrier. The mast is pivoted on the drill frame permitting operation of the drill with the mast horizontal. Quick disconnect is standard for both lengths. Sheaves are provided for 1"(25.4mm) manilla rope, 3/8"(9.5mm) and 1/2"(12.7mm) wire rope. The sheaves are 8"(203mm) diameter to reduce fatigue in the wire rope.
CATHEAD The cathead is mechanically driven from the drill transmission. The PTO provides 1 speed forward and 1 reverse. Drum is 8"(203mm) diameter and 6"(152mm) long with generously sized anti-four flanges.
  •             Line pull..............................5,000#(2270 kg) +
  •             Speed.................................500 ft./min. (153m/min) +

The cathead is mounted to the right rear of the drill and is perpendicular to the long axis of the drill frame.

HYDRAULIC HOIST Various capacity options are available. Hydraulic hoists utilize a worm gear drive with a sealed case. Gears and tapered roller bearings run in oil. Housing and drum are designed to prevent fouling of the cable. The controls are mounted on the operators console. Hoists are provided with a safety brake to prevent roll-back.
SLIDE BASE A hydraulically operated sliding base provides 16 in(406mm) of travel to provide clearance for hoisting tools. The sliding base can be mounted on any flat surface of adequate size.
SIDE SHIFTING BASE Hydraulically operated, side to side provides approximately 6"(152mm) of motion left and right of center.
LEVELING JACKS Jacks are available for rear and front mounting. 4"(102mm) bore cylinders are enclosed within telescoping steel tubes for increased durability and stability. Each jack is provided with a pivoted foot pad with a non-slip surface. Standard stroke is 36"(915mm)
DRILL PLATFORM Dimensions vary with the truck and carrier size. Welded construction consists of structural steel and deck plates. Running lights are included.
WATER TANK 250 gallon (946 l) or 500 gallon (1892 l) welded steel water tanks mount at the front of the drill platform. Other tanks are available on request.
ROD RACK Above deck rod rack and underbody rod rack are standard with drill platform. Optional rod storage under the water tank is also available.
AUGER RACK Above deck auger rack is standard with drill platform. Underbody fixed, hinged, or hydraulic auger racks are available.
TOOL BOXES Tool boxes are available for above or below deck mounting in several sizes.
DRILLERS STEP Heavy duty drillers step can be mounted on the right and/or left side of the drill platform. The step folds up for storage.
VERTICAL DROP HAMMER RACK The storage rack for the 140 lb. safety hammer can be mounted in the drill platform or on the back of the hydraulic leveling jack on the cathead side of the drill rig.
MANUAL CHUCK The three(3) jaw chuck with recessed bolts for safety will accept up to 3-3/4"(95mm) diameter rod or casing.
CHUCK JAWS Chuck jaws are fitted with tungsten-carbide grippers and are available to fit all standard rod and casing sizes through 3-1/2"(89mm) O.D.
HYDRAULIC CHUCK Hydraulic chuck mounts to top of spindle with jaws available through 3-1/2"(89mm)

Pump is frame or deck mounted and driven from the rigs' hydraulic system

  • 1)  FMC L0918 (425)................................variable speed
  • 2)  Monyo 3L6...........................................variable speed
  • 3)  SP40 Hose Pump..................................variable speed

Other water pumps available on request.

HIGH RISE PUMP MOUNT Allows the Moyno 3L6 water pump to be mounted above two (2) 36"(915mm) tool boxes on the drill platform.
HYDRAULIC ROD HOLDER AND BREAKOUT WRENCH This device is capable of holding up to 8"(203mm) O.D. drill rods or casing. It slides on and off the hole and also moves side to side. The device stores easily under the rig. A hydraulic breakout wrench is provided.
140LB AUTOMATIC SPT HAMMER SYSTEM The Diedrich automatic SPT hammer system hydraulically lifts a 140 lb.(63.5kg) drive weight and completely releases the weight for a 30 in.(762mm) free fall. The drive weight does not have a cable or rope attached that may impede its fall. The hammer can be operated at a rate of up to 50 blows per minute. The tolerance of the fall height is plus or minus 3/8 inch(9.5mm). The hammer mounts on the guide tube so that it can be hydraulically raised and lowered and easily moved to the on hole driving position. The hammer can also be operated while suspended from a winch cable. The hammer driving force is transmitted only to the anvil and rods and the hammer allows for up to 24 inches(610mm) of driving without movement of the hammer body. The drive weight, lifting mechanism, and anvil impact surface are enclosed to provide optimum safety.
DIEDRICH POSITIVE CATHEAD BRAKE In-line positive cathead brake stops the mechanical cathead rotation in less then one rotation when the emergency stop switch is activated. At the same time the clutch is disengaged and the drill rig engine is shut down. Once the emergency stop system is deactivated the brake is released, and the cathead can be operated as usual.
CARRIER/MAST SAFETY INTERLOCK SYSTEM* The Carrier/Mast Safety Interlock prevents the carrier from running while the mast is up. This safety device prevents driving the rig into overhead wires with the mast up.
*(pat no. 5647442)


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