ARO 8478-A Manuel de l'opérateur - Page 11

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TROUBLE SHOOTING

Ml0

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

INADEQUATE

AIR SUPPLY.

AIR REGULATOR

(43157) IMPROPER-

LY ADJUSTED.

AIR INLET OR EXHAUST

SCREEN

PLUGGED.

OBSTRUCTION

IN THROTTLE

VALVE

OR VALVE NOT OPENING.

MOTOR NOT BEING PROPERLY

LU-

BRICATED.

ROTOR BLADE IS MISSING, INCOR-

RECTLY INSTALLED.

BADLY WORN

OR BEARING

FAILURE.

DAMAGED

VALVE PIN OR "O" RING.

CORRECTIVE

ACTION

CHECK AIR SUPPLY FOR CORRECT

REGULATOR

ADJUST-

MENT (90 P.S.I.G. MAX. WHEN TOOL IS OPERATING).

CHECK REGULATOR

ADJUSTMENT

TO BE SURE OF MAXIMUM

AIR FLOW.

INSPECT, WASH CLEAN.

DISASSEMBLE

THROTTLE,

CLEAN, INSPECT

FOR OBSTRUC-

TlONS OR DAMAGED

PARTS.

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.

DISASSEMBLE

MOTOR, CLEAN AND INSPECT FOR PROPER

INSTALLATION,

REPLACE

BLADES

AND/OR BEARINGS

IF NEC-

ESSARY.

DISASSEMBLE

VALVE COMPONENTS,

INSPECT, REPLACE

NECESSARY.

DISASSEMBLE

VALVE COMPONENTS.

INSPECT. REPLACE

DAMAGED

VALVE COMPONENTS.

PARTS IF NECESSARY.

DIMENSIONAL DATA

1/4 - 18 N.P.T. AIR INLET

+ 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.