The lubricating oil tank, located on the front of the upper cylinder, provides lubricating oil via gravity
feed to the oil pump located on the rear of the lower cylinder. The in-tank suction strainer, located
inside the lubricating oil tank, filters the oil prior to being delivered to the system. An oil tank plug/vent
valve, located on top of the lubricating oil tank, is used to vent the system during impact hammer
The lubricating oil tank is filled from the ground by connecting the hose and quick connect fitting to the
ground oiling hand pump, placing the oiling hand pump container cover on an oil container filled with
MIL-L-2104 15W40 oil, and installing the ground oiling hand pump in the container cover. Then
connect the quick connect fitting on the ground oiling hand pump to the oil tank fill line and quick
connect fitting located at the bottom of the lower cylinder and manually pump oil to the lubricating oil
tank on the impact hammer. The oil tank fill line and quick connect fitting are identified by a yellow-
colored "OIL" label. In the absence of the ground oiling hand pump, the lubricating oil tank can also be
filled manually by removing the oil tank plug/vent valve. For temperatures below -20.0º F (-29º C),
arctic-grade MIL-L-46167 0W40 oil should be used.
The oil pump is an air-activated, single plunger-type pump that pumps the lubricating oil to the lower
cylinder via an oil line and fitting. Inlet and outlet check valves on the oil pump prevent oil from flowing
in a reverse direction.
The oil pump feed shutoff valve is used to turn off the oil feed to the oil pump from the lubricating oil
tank. The oil pump inline priming pump is used to prime the system for initial startup.
The impact hammer is equipped with a battery-powered blow count recorder located at the top of the
direct drive assembly. The blow count recorder is an indicator that provides the operator with a running
count of blows delivered. The blow count recorder and battery pack are protected by a foam cushion
insert and housed in a weather-proof housing with a viewing window. The internal battery pack is
designed to last for two years.
The impact hammer is equipped with a fitting for an optional velocity sensor located on the lower part of
the upper cylinder, directly below the fuel tank. A velocity sensor cover plate is installed over the fitting.
The impact hammer has several major data and safety plates and decals. The Identification Plate,
located on the top side of the direct drive assembly, specifies the name of the manufacturer, model
number, National Stock Number, USA Registration Number, manufacture date, contract number,
weight, and serial number. The Identification Bar Code Plate, located on the side of the fuel tank and
readable by a hand-held scanner, provides comprehensive information about the impact hammer. "HOT
AREA" warning and "LIFT POINT" location plates are located at the cooling fins and upper/lower
cylinder lifting lugs respectively. Safety and hard hat warning decals are located on the side of the
direct drive assembly. "PINCH POINT" warning decals are located at the upper and lower gibs.
The remote throttle provides remote speed control and shutdown of the impact hammer diesel engine.
The remote throttle can be installed in the superstructure cab if desired.
The remote throttle is a hydraulically-operated, bypass device that controls the stroke rate of the impact
hammer by controlling the amount of fuel delivered to the fuel injectors by the fuel pump. It consists of
a hydraulic reservoir and pump, a movable handle, pressure relief valve, pressure gauge, 70-foot (18
m) hydraulic hose, and associated fittings. The remote throttle is filled via a fill plug and utilizes
automatic transmission fluid Dexron II/III or equivalent. A pressure relief valve is used to reduce remote
throttle pressure in order to adjust the stroke rate or to remove remote throttle pressure (0 psi) in order
to shut-down impact hammer operation.