ARO 8478-A1 Operator's Manual - Page 11
Browse online or download pdf Operator's Manual for Grinder ARO 8478-A1. ARO 8478-A1 12 pages. “000-1” series
Print PageTROUBLE SHOOTING
Ml0
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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