Filter
Top Products
TROUBLE SHOOTING
Ml0
32
LISTED BELOW ARE SOME OF THE MOST COMMON CAUSES FOR THE GRINDER TO MALFUNCTION. MALFUNCTIONS BEYONDTHE SCOPE OF THIS MANUAL
SHOULD BE BROUGHT TO THE ATTENTlON OF YOUR ARO REPRESENTATIVE OR RETURN THE TOOL TO THE FACTORY FOR REPAIR.
LOW SPEED AND
POWER OR GRIND-
ER WILL NOT RUN.
THROTTLE VALVE
HARD TO OPERATE.
TOOL WILL NOT
SHUT OFF.
POSSIBLE CAUSE
1. INADEQUATE AIR SUPPLY.
2. AIR REGULATOR (43157) 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.
5. ROTOR BLADE IS MISSING, INCOR-
RECTLY INSTALLED. BADLY WORN
OR BEARING FAILURE.
1. DAMAGED VALVE PIN OR “O” RING.
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-
TlONS 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.
5. 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
I
1. DAMAGED VALVE COMPONENTS.
I
PARTS IF NECESSARY.
DIMENSIONAL DATA
1/4 - 18 N.P.T. AIR INLET
I
+
I---
5-5/16” MODELS WITH 44124-( )
-I
COLLET ASS’Y.
2” (APPROX.)
TYPICAL
1/4 - 18 N.P.T. AIR INLET
5 - 3/16” MODELS WITH 43179. COLLET ASS’Y.
TYPICAL
DIA.
11