TM 5-3820-246-l4&P
l-9. LOCATION AND
DESCRIPTION OF MAJOR
COMPONENTS.
a. Front End. Transfers impact forces from engine piston to tool in impact mode. Converts engine piston impact
forces in drill mode to rotary motion to turn tool. Tool retainer keeps tool secured inside the front end during use.
b. Engine. Two-cycle, single cylinder engine provides power to front end. Consists of fuel tank, carburetor, air
cleaner, piston, cylinder, cylinder cover, and exhaust pipe.
c. Compressor. Provides air to
blow stone chips out of
hole being drilled. Consists of
compressor piston,
d. Crankcase. Consists of
crankshaft, flywheel,
flywheel cover, starter, and bearings.
e. Operator Handle Controls. Consist of operator handle, throttle, fuel control, and fuel lank vent.