Grizzly T23091 - Manual (Page 14)

Model t23091 1 ⁄
4
" Air die grinder -12 -
symptom possible cause solution
tool does not
operate when the
trigger is pressed,
but air runs freely
from exhaust. 1. Motor is at fault. 1. Motor may be stuck in position
from improper storage.
Lubricate the air tool and rotate
spindle by hand a few times.
next use the trigger to operate
the air tool while re-oiling
several times in the process to
flush the tool.
tool runs slowly,
and only a small
amount of air exits
from the exhaust
port. 1. Air regulator or tool
adjustment is at fault.
2. trigger throttle valve is
obstructed.
3. intake filter screen is
clogged.
4. Motor loaded with moisture
or oil sludge.
1. Adjust the air regulator to 90
psi, or 100 psi if the air hose is
longer than 25 feet. re-adjust
the throttle valve screw to the
fully open position.
2. disassemble the throttle valve
and clean out sludge and
contaminants.
3. Clean the filter screen behind
the air supply fitting (see figure
1, on page 5).
4. disassemble air tool, clean, and
relubricate. Lubricate air tool
and rotate spindle by hand a
few times. next use the trigger
to operate the air tool, re-oiling
several times in the process to
flush the system.
tool does
not shut
OFF
when trigger is
released.
1. trigger bent or throttle valve
at fault.
2. throttle valve stuck open.
1. Bend trigger back to its normal
position so throttle valve is free
to return to fully released or
OFF position.
2. replace throttle valve spring or
o-rings.
Air tool becomes
hot or noisy
during operation. 1. Air tool heats up from
insufficient lubrication or a
worn bearing.
1. repair air tool, and correct
in-line oiler lubrication
adjustment, or follow manual
lubrication requirements.
Air tool becomes
too cold to hold,
or ice crystals
form at exhaust
port. 1. the intake of moisture and
the pressure drop is causing
moisture to freeze in the
tool.
1. Keep compressor tank drained,
service, reposition, or add
additional water separators in
the supply system.