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ARO 8506-A User Manual

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OPERATOR’S MANUAL
INCLUDING: OPERATION, INSTALLATION & MAINTENANCE
SECTION
MANUAL
Released:
M30
33
3-l-77
Tool Products
Revised:
l-27-95
“O” SERIES “QRT” SCREWDRIVERS
Models:
8506-A( ), 8509-A( ),
8515-A( ) and 8521-A( ).
1018-2
READ THIS MANUAL CAREFULLY BEFORE INSTALLING,
OPERATING OR SERVICING THIS EQUIPMENT.
FAILURE TO OBSERVE THE FOLLOWING WARNINGS COULD RESULT IN INJURY.
Pneumatic tools should always be installed and used in accor-
dance with A.N.S.I. B186.1 “Safety Code For Portable Air Tools.”
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Operate this tool at 90 p.s.i.g. (8.2 bar) maximum air pressure
at the air inlet of the tool.
Disconnect air supply from tool before removing/installing bit
socket or device attached to tool or performing maintenance
procedures.
Keep hands, clothing and long hair away from rotating end of
tool.
Repeated prolonged operator exposure to vibrations which may
be generated in the use of certain hand-held tools may produce
Raynaud’s phenomenon, commonly referred to as Whitefinger
disease. The phenomenon produces numbness and burning
sensations in the hand and may cause circulation and nerve dam-
age as well as tissue necrosis. Repetitive users of hand-held
tools who experience vibrations should closely monitor duration
of use and their physical condition.
Anticipate and be alert for sudden changes in motion during
start up and operation of any power tool.
Never exceed rated r.p.m. of tool.
Wear suitable eye and hearing protection while operating tool.
Tool shaft can continue to rotate briefly after throttle is re-
leased.
Do not lubricate tools with flammable orvolatile liquids such as
kerosene, diesel or jet fuel.
Do not remove any labels. Replace any damaged label.
Use only accessories recommended by ARO.
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The use of other than genuine ARO replacement parts may
result in safety hazards, decreased tool performance and in-
creased maintenance and may invalidate all warranties.
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ARO is not responsible for customer modification of tools for
applications on which ARO was not consulted.
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Tool maintenance and repair should be performed by autho-
rized, trained, competent personnel. Consult your nearest
ARO authorized servicenter.
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It is the responsibility of the employer to place the information
in this manual into the hands of the operator.
Question and Answer IconNeed help?

Do you have a question about the ARO 8506-A and is the answer not in the manual?

ARO 8506-A Specifications

General IconGeneral
Air Inlet Thread1/4 inch
Sound Level78 dB(A)
Vibration2.5 m/s²
VoltageNot available
TorqueNot available
SpeedNot available
Battery TypeNot available
Charging TimeNot available

Summary

General Safety Instructions

Read Manual Before Operation

Mandatory reading of manual for safe installation, operation, and servicing of equipment.

Operational Safety Warnings

Covers air pressure limits, disconnecting supply, keeping clear of moving parts, and eye/hearing protection.

Vibration and Ergonomic Hazards

Alerts users to potential nerve damage from prolonged vibration exposure.

Maintenance and Parts Notice

Advises using genuine parts, professional repair, and employer responsibility for training.

Specific Safety Warnings and Notices

Eye and Hearing Protection

Mandatory use of eye and hearing protection during operation.

Disconnecting Air Supply

Procedure to disconnect air supply before maintenance or accessory changes.

Tool Handling and Operation

Warnings against carrying by hose, overreaching, and maintaining balance.

Air Hose and Fittings Integrity

Prohibits use of damaged or deteriorated air hoses and fittings.

Maximum Air Pressure Limit

Specifies the maximum safe operating air pressure of 90 p.s.i.g.

Label Requirements

Instructions regarding the presence and replacement of safety labels on the tool.

Lubrication and Air Supply Requirements

Routine Lubrication Schedules

Details required lubrication for 8-hour and 160-hour tool operations.

Air Pressure and Filtration Specifications

Specifies 90 p.s.i.g. pressure, 50-micron filtration, and hose size for optimal performance.

Recommended Lubricants and Air Equipment

Lists ARO lubricants and recommends the C28231-810 F.R.L. for air supply.

Maintenance and Assembly Guidance

Tool Servicing and Disassembly

Guidelines for regular servicing, inspection, cleaning, and safe disassembly.

Assembly Lubrication

Advice on lubricating during reassembly and handling small parts.

Model Identification

Model Number and Specifications Table

Lists models with R.P.M., clutch, gearing, motor, and pistol grip assemblies.

EU Model Compliance Note

Explains that models with '-EU' suffix are EC compliant.

Tool Disassembly and Assembly

Drive Section Disassembly

Instructions for removing the clutch housing and clutch assembly from the drive section.

Gearing Section Disassembly

Steps to remove the motor housing and gearing using appropriate tools.

Motor Section Removal

Procedure for removing the motor from the housing after gearing removal.

Adjustable Clutch Operation

Clutch Adjustment Procedure

Instructions on how to adjust the clutch nut for desired torque.

Clutch Disassembly Steps

Detailed steps for disassembling the adjustable clutch assembly.

Clutch Assembly Steps

Instructions for reassembling the adjustable clutch, including lubrication.

Clutch Spring Identification

Table identifying clutch spring part numbers, type, and wire dimensions.

Torqmatic Clutch Operation

Torqmatic Clutch Adjustment

Procedure for adjusting the Torqmatic clutch nut for desired torque.

Torqmatic Clutch Disassembly

Detailed steps for disassembling the Torqmatic clutch assembly.

Torqmatic Clutch Assembly

Instructions for reassembling the Torqmatic clutch, including lubrication.

Torqmatic Clutch Spring Identification

Table identifying Torqmatic clutch spring part numbers and specifications.

Positive Clutch Operation

Positive Clutch Disassembly

Steps for removing the clutch housing and bit holder assembly from the positive clutch.

Positive Clutch Assembly

Instructions for reassembling the positive clutch, including lubrication.

Drive Gearing Section

Drive Gearing Disassembly

Steps to remove spindle components and gears from the ring gear.

Drive Gearing Assembly

Instructions for assembling gears, shafts, and bearings with grease.

Auxiliary Gearing Section

Auxiliary Gearing Disassembly

Steps to remove spindle and components from the adapter (ring gear).

Auxiliary Gearing Assembly

Instructions for assembling gears, shafts, and bearings with grease.

Motor Section

Motor Disassembly

Steps to remove the motor from its housing and apart.

Motor Assembly

Instructions for assembling end plates, rotor, cylinder, blades, and spacers.

Head Section

Head Section Disassembly

Steps to remove roll pin, trigger, shroud, valve assembly, screens, and muffler.

Head Section Assembly

Instructions for assembling O-rings, valve assembly, plunger, springs, shroud, and trigger.

Service Kit Contents

Service Kit 42114 for Adjustable Clutch

Lists parts included in service kit 42114 for adjustable clutch models.

Service Kit 42341 for Direct Drive/Positive Clutch

Lists parts included in service kit 42341 for direct drive and positive clutch models.

Trouble Shooting Guide

Low Speed or Failure to Operate

Addresses causes like inadequate air supply, clogged inlets, or motor issues.

Clutch Engagement Issues

Covers improper clutch adjustment or wear as causes for premature disengagement.

Piped Exhaust System Assembly

Exhaust System Components

Details components of the piped exhaust system including hoses and adapters.

Ordering and Assembly Instructions

Provides guidance on ordering lengths and assembling the exhaust system to the tool.

Housing and Adapter Assemblies

Finder Adapters

Details finder adapters used with various finders and guides.

Needle Bearing Adapters

Describes needle bearing adapters used with ball lock and square drive assemblies.

Finders for Hex Bits

Lists finders for 1/4" hex bits with screw sizes and dimensions.

Accessory Finders and Bits

Extension and Bell Mouth Finders

Details extension and bell mouth finders for 1/4" hex bits with screw sizes.

Bits and Bit Holders

Lists bladed bits for slotted screws and their specifications.

Bits and Bit Holders Details

Extension Bladed Bits

Provides part numbers, lengths, screw sizes, and shaft diameters for extension bladed bits.

Phillips, Reed & Prince, Posidriv Bits

Lists various bit types with their lengths, point sizes, and shaft diameters.

Socket Head Drivers and Adapters

Socket Head Drivers

Details socket head drivers with hex, set screw, and cap screw sizes.

Square Drive Adapters

Lists square drive adapters with lengths, square drive sizes, and shank diameters.

Hex Ball Lock Adapter

Describes hex ball lock adapters, their bit sizes, and use with guide bushings.

Guide Bushings

Provides specifications for guide bushings used with finder adapters.