Bostitch MARK III User guide

BEFORE OPERATING THIS TOOL, ALL OPERATORS SHOULD STUDY THIS MANUAL TO
UNDERSTAND AND FOLLOW THE SAFETY WARNINGS AND INSTRUCTIONS. KEEP THESE
INSTRUCTIONS WITH THE TOOL FOR FUTURE REFERENCE. IF YOU HAVE ANY QUESTIONS,
CONTACT YOUR STANLEY-BOSTITCH REPRESENTATIVE OR DISTRIBUTOR.

ANTES DE OPERAR ESTA HERRAMIENTA, TODOS LOS OPERADORES DEBERÁN ESTUDIAR
ESTE MANUAL PARAPODER COMPRENDER Y SEGUIR LAS ADVERTENCIAS SOBRE SEGURI­DAD Y LAS INSTRUCCIONES. MANTENGA ESTAS INSTRUCCIONES CON LA HERRAMIENTA
PARA FUTURA REFERENCIA, SI TIENE ALGUNA DUDA, COMUNÍQUESE CON SU REPRESEN­TANTE DE STANLEY-BOSTITCH O CON SU DISTRIBUIDOR.

LIRE ATTENTIVEMENT LE PRÉSENT MANUEL AVANT D’UTILISER L’APPAREIL. PRÉTER UNE
ATTENTION TOUTE PARTICULIÈRE AUX CONSIGNES DE SÉCURITÉ ET AUX AVERTISSE­MENTS. GARDER CE MANUEL AVEC L’OUTIL POUR FUTUR RÉFÉRENCE. SI VOUS AVEZ DES
QUESTIONS, CONTACTEZ VOTRE REPRÉSENTANT OU VOTRE CONCESSION NAIRE
STANLEY-BOSTITCH.

OPERATION and MAINTENANCE MANUAL

MANUEL D’INSTRUCTIONS ET D’ENTRETIEN

MANUAL DE OPERACIÓN Y DE MANTENIMIENTO

MARK III

PNEUMATIC TOOLS

HERRAMIENTAS NEUMÁTICAS

CLOUEURS PNEUMATIQUES

103701REVD 5/99

BOSTITCH

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®

BOSTITCH

Stanley Fastening Systems

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INTRODUCTION

The Stanley-Bostitch MIII is a precision-built tool, designed for high speed, high volume
fastening. These tools will deliver efficient, dependable service when used correctly and with
care. As with any fine power tool, for best performance the manufacturer’s instructions must
be followed. Please study this manual before operating the tool and understand the safety
warnings and cautions. The instructions on installation, operation and maintenance should be
read carefully, and the manual kept for reference. NOTE: Additional safety measures may be
required because of your particular application of the tool. Contact your Stanley-Bostitch
representative or distributor with any questions concerning the tool and its use.
Stanley-Bostitch, Inc., East Greenwich, Rhode Island 02818.

INDEX

Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Tool Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7, 8 & 9

Basic Tool Operation (diagram). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Maintaining the Pneumatic Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Air Supply: Fittings, Hoses, Filters, Air Consumption, Regulators,

Operating Pressure, Setting Correct Pressure . . . . . . . . . . . . . . . . . . . 5

Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Tool Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Loading the Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Maintaining the MIII Series Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

NOTE:

Stanley-Bostitch tools have been engineered to provide excellent customer satisfaction and are
designed to achieve maximum performance when used with precision Stanley-Bostitch fasteners

engineered to the same exacting standards.

Stanley-Bostitch cannot assume responsibility for product performance if our tools are
used with fasteners or accessories not meeting the specific requirements established for
genuine Stanley-Bostitch nails, staples and accessories.

LIMITED WARRANTY

Stanley-Bostitch, Inc., warrants to the original retail purchaser that this product is free from defects
in material and workmanship, and agrees to repair or replace, at Stanley-Bostitch's option, any
defective product within 1 year from the date of purchase. This warranty is not transferable. It only
covers damage resulting from defects in material or workmanship, and it does not cover conditions
or malfunctions resulting from normal wear, neglect, abuse, accident or repairs attempted or made
by other than our regional repair center or authorized warranty service center. Driver blades,
bumpers and o-rings are considered normally wearing parts.

THIS WARRANTY IS IN LIEU OF ALL OTHER EXPRESS WARRANTIES. ANY WARRANTYOF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE IS LIMITED TO THE DURA­TION OF THIS WARRANTY.
STANLEY-BOSTITCH SHALL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL
DAMAGES.

This warranty is limited to sales in the United States and Canada. Some states do not allow limita­tions on how long an implied warranty lasts, or the exclusion or limitation of incidental or conse­quential damages, so the above limitations or exclusions may not apply to you. This warranty gives
you specific legal rights, and you may also have other rights which vary from state to state.

To obtain warranty service, return the product at your expense together with proof of purchase to a
Stanley-Bostitch Regional or authorized warranty repair center. You may call us at 1-800-556-6696
for the location of authorized warranty service centers in your area.

®

FASTENERS

PROTECT YOUR TOOLS

USE ONLY GENUINE

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SAFETY INSTRUCTIONS

EYE PROTECTION which conforms to ANSI specifications and provides protection
against flying particles both from the FRONT and SIDE should ALWAYS be worn
by the operator and others in the work area when loading, operating or servicing
this tool. Eye protection is required to guard against flying fasteners and debris,
which could cause severe eye injury.

The employer and/or user must ensure that proper eye protection is worn. Eye
protection equipment must conform to the requirements of the American National
Standards Institute, ANSI Z87.1-1989 and provide both frontal and side protection.
NOTE: Non-side shielded spectacles and face shields alone do not provide ade­quate protection.

CAUTION:

ADDITIONAL SAFETY PROTECTION will be required in some environ­ments. For example, the working area may include exposure to noise level which
can lead to hearing damage. The employer and user must ensure that any necessary
hearing protection is provided and used by the operator and others in the work area.
Some environments will require the use of head protection equipment. When
required, the employer and user must ensure that head protection conforming to

ANSI Z89.1 1986 is used.

AIR SUPPLY AND CONNECTIONS

Do not use oxygen, combustible gases, or bottled gases as a power source for this
tool as tool may explode, possibly causing injury.

Do not use supply sources which can potentially exceed 200 P.S.I.G. as tool may
burst, possibly causing injury.

The connector on the tool must not hold pressure when air supply is disconnect­ed. If a wrong fitting is used, the tool can remain charged with air after discon­necting and thus will be able to drive a fastener even after the air line is discon­nected possibly causing injury.

Do not pull trigger or depress contact arm while connected to the air supply as the
tool may cycle, possibly causing injury.

Always disconnect air supply: 1.) Before making adjustments; 2.) When servicing
the tool; 3.) When clearing a jam; 4.) When tool is not in use; 5.) When moving to a
different work area, as accidental actuation may occur, possibly causing injury.

LOADING TOOL

When loading tool: 1.) Never place a hand or any part of body in fastener dis­charge area of tool; 2.) Never point tool at anyone; 3.) Do not pull the trigger or
depress the trip as accidental actuation may occur, possibly causing injury.

OPERATION

Always handle the tool with care: 1.) Never engage in horseplay; 2.) Never pull
the trigger unless nose is directed toward the work; 3.) Keep others a safe dis­tance from the tool while tool is in operation as accidental actuation may occur,
possibly causing injury.

The operator must not hold the trigger pulled on contact arm tools except dur­ing fastening operation as serious injury could result if the trip accidentally con­tacted someone or something, causing the tool to cycle.

Keep hands and body away from the discharge area of the tool. Acontact arm tool
may bounce from the recoil of driving a fastener and an unwanted second fasten­er may be driven possibly causing injury.

Check operation of the contact arm mechanism frequently. Do not use the tool if
the arm is not working correctly as accidental driving of a fastener may result. Do
not interfere with the proper operation of the contact arm mechanism.

Do not drive fasteners on top of other fasteners or with the tool at an overly steep
angle as this may cause deflection of fasteners which could cause injury.

Do not drive fasteners close to the edge of the work piece as the wood may split,
allowing the fastener to be deflected possibly causing injury.

MAINTAINING THE TOOL

When working on air tools note the warnings in this manual and use extra care
when evaluating problem tools.

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MIII TOOL SPECIFICATIONS

All screws and nuts are english

FASTENER SPECIFICATIONS:

TOOL AIR FITTING:

This tool uses a 3/8” N.P.T. male plug. The inside diameter should be .275” (7mm) or larger.
The fitting must be capable of discharging tool air pressure when disconnected from the air
supply.

OPERATING PRESSURE:

60 to 100 p.s.i.g. (4.2 to 7.1 kg/cm2). Select the operating pressure within this range for best
fastener performance.

DO NOT EXCEED THIS RECOMMENDED OPERATING PRESSURE.

AIR CONSUMPTION:

The MIII requires 7.1 cubic feet per minute (201 liters per minute) of free air to operate at the
rate of 100 fasteners per minute, at 80 p.s.i. (5.6 kg/cm2). Take the actual rate at which the tool
will be run to determine the amount of air required. For instance, if your fastener usage
averages 50 fasteners per minute, you need 50% of the tool’s c.f.m. of free air which is required
to operate the tool at 100 fasteners per minute.

MODEL LENGTH HEIGHT WIDTH WEIGHT

MIII812CNCT 10.88” (275mm) 12.81” (325mm) 2.75” (70mm) 7.2lbs (3.3kg)
MIII886BCF 10.88” (275mm) 12.81” (325mm) 2.75” (70mm) 6.7lbs (3.1kg)
MIII975-952LCT 14.12” (360mm) 12.81” (325mm) 2.75” (70mm) 7.2lbs (3.3kg)

MODEL FASTENER WIRE SIZE MAX LENGTH

MIII812CNCT BT .097 (2.5mm) 2-3/8” (60.3mm)
MIII886BCF CORRUGATED ------ 1/2” (12.7mm)
MIII975-952LCT BT .086 (2.2mm) 2” (50mm)

STANLEY-BOSTITCH OFFERS TWO TYPES OF OPERATION FOR THIS SERIES TOOL.

CONTACT TRIP

The common operating procedure on “Contact Trip” tools is for the operator to contact the
work to actuate the trip mechanism while keeping the trigger pulled, thus driving a
fastener each time the work is contacted. This will allow rapid fastener placement on
many jobs, such as sheathing, decking and pallet assembly.
All pneumatic tools are subject to recoil when driving fasteners. The tool may bounce,
releasing the trip, and if unintentionally allowed to recontact the work surface with the
trigger still actuated (finger still holding trigger pulled) an unwanted second fastener
will be driven.

TRIGGER OPERATED

The Trigger Operated model is cycled by actuation of the trigger only. This model does
not have a Contact Arm and is intended for use only where a Contact Arm CANNOT be
used to satisfy the requirements of the application.
The Trigger Operated tool will cycle each time the trigger is actuated.

MODEL IDENTIFICATION:

Refer to Operation Instructions on page 4 before proceeding to use this tool.

CONTACT TRIP TRIGGER OPERATED

Identified by: Identified by:

BLACK TRIGGER BLACK TRIGGER

OPERATION