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TROUBLE SHOOTING
LISTED BELOW ARE SOME OF THE MOST COMMON CAUSES FOR THE GRINDER TO MALFUNCTION. MALFUNCTIONS BEYOND THE SCOPE OF THIS MANUAL
SHOULD BE BROUGHT TO THE ATTENTlON OF YOUR ARO REPRESENTATIVE OR RETURN THE TOOL TO THE FACTORY FOR REPAIR.
CONDITION
LOW SPEED AND
POWER OR GRIND-
ER WILL NOT RUN.
THROTTLE VALVE
1. DAMAGED VALVE PIN OR COM-
HARD TO OPERATE. PONENTS.
TOOL WILL NOT
SHUT OFF.
1. DAMAGED VALVE COMPONENTS.
POSSIBLE CAUSE
1. INADEQUATE AIR SUPPLY.
2. AIR REGULATOR (30603) IMPROPER-
LY ADJUSTED.
3. AIR INLET OR EXHAUST SCREEN
PLUGGED.
4. OBSTRUCTION IN THROTTLE VALVE
OR VALVE NOT OPENING.
5. MOTOR NOT BEING PROPERLY LU-
BRICATED.
6. ROTOR BLADE IS MISSING, INCOR-
RECTLY INSTALLED, BADLY WORN
OR BEARING FAILURE.
CORRECTIVE ACTION
1.
CHECK AIR SUPPLY FOR CORRECT REGULATOR ADJUST-
MENT (90 P.S.I.G. MAX. WHEN TOOL IS OPERATING).
2.
CHECK REGULATOR ADJUSTMENT TO BE SURE OF MAXIMUM
AIR FLOW.
3. INSPECT, WASH CLEAN.
4.
DISASSEMBLE THROTTLE, CLEAN, INSPECT FOR OBSTRUC-
TIONS OR DAMAGED PARTS.
5.
APPLY 2 OR 4 DROPS OF SPINDLE OIL IN AIR INLET. RUN TOOL
TO ALLOW OIL TO ENTER MOTOR - BE CERTAIN OILER IS
FULL OF OIL.
6.
DISASSEMBLE MOTOR, CLEAN AND INSPECT FOR PROPER
INSTALLATION, REPLACE BLADES AND/OR BEARINGS IF NEC-
ESSARY.
1.
DISASSEMBLE VALVE COMPONENTS, INSPECT, REPLACE IF
NECESSARY.
1.
DISASSEMBLE VALVE COMPONENTS, INSPECT, REPLACE
PARTS IF NECESSARY.
DIMENSIONAL DATA
(49mm)
2-9/32 (APPROX.)
(56mm)
10