Pressure less than 90 psig reduces efficiency, while
pressure greater than this increases speed beyond the
rated capacity—creating potential hazards and possible
damage to the drill. Check the air pressure at the
regulator while using the drill in a normal manner.
Air Line Lubricator
√ Do not use a heavy grade of oil because stalling and
low performance will result.
The preferred method of lubricating the air drill motor
is to use an airline lubricator such as the Snap-on
AHR428 Lubricator. It should be filled with Snap-on
IM6 Air Motor Oil or a good grade of SAE 10W oil.
If an airline lubricator is not used, lubricate the air
motor by injecting approximately 1/8 oz. (3.75 ml) of
IM6 Air Motor Oil into the air inlet of the air drill each
day before using it. IM6 Oil is specially formulated for
air tools and no flushing solvent is needed.
Trigger Regulator Valve
The variable speed trigger controls the air flow valve,
which regulates the power and speed of the air drill.
The distance of trigger movement directly controls
the air flow to the air motor.
Air Strainer
An air strainer is located at the air inlet of the drill. A
filter screen is assembled into the air inlet bushing. It
can be serviced by removing the air inlet bushing and
cleaning the screen. During reassembly, torque the
bushing to 240 in. lb. (27 N•m). If the O-ring is
damaged, use a new O-ring to prevent air leakage.
Lubrication
Lubricate the gears through the grease fitting with
Snap-on YA190DIS grease after 20 hours of
operation.
ZPDRACE Rev G
EN
EN
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