Bostitch N88RH, N88WWB User Manual
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 BOSTITCH
REPRESENTATIVE OR DISTRIBUTOR.
ANTES DE OPERAR ESTA HERRAMIENTA, TODOS LOS OPERADORES DEBERÁN ESTUDIAR ESTE
MANUAL PARA PODER 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 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 CONCESSIONNAIRE BOSTITCH.
OPERATION and MAINTENANCE MANUAL
MANUAL DE OPERACIÓN Y DE MANTENIMIENTO
MANUEL D’INSTRUCTIONS ET D’ENTRETIEN
N88WWB/N88RH
PNEUMATIC STICK NAILERS
CLAVADORA NEUMÁTICA ALIMENTADA POR BARRA
CLOUEUR PNEUMATIQUE EN BANDES
159720REVC 11/05
Stanley Fastening Systems L.P.
INTRODUCTION
The Bostitch N88 is a precision-built tool, designed for high speed, high volume nailing. 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 Bostitch representative or distributor with any
questions concerning the tool and its use. Bostitch Inc., East Greenwich, Rhode Island 02818.
INDEX
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Tool Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Air Supply: Fittings, Hoses, Filters, Air Consumption, Regulators,
Operating Pressure, Setting Correct Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Loading the Tool, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Fastener Depth Control Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Removing Nails, Directional Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Tool Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 ,9
Maintaining the Pneumatic Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Tr ouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
NOTE:
Bostitch tools have been engineered to provide excellent customer satisfaction and are designed to achieve
maximum performance when used with precision Bostitch fasteners engineered to the same exacting
standards. Bostitch cannot assume responsibility for product performance if our tools are used
with fasteners or accessories not meeting the specific requirements established for genuine Bostitch
nails, staples and accessories.
LIMITED WARRANTY — U.S. and Canada Only
Effective December 1, 2005 Bostitch, L.P. warrants to the original retail purchaser that the product purchased is
free from defects in material and workmanship, and agrees to repair or replace, at Bostitch’s option, any defective
Bostitch branded pneumatic stapler or nailer for a period of seven (7) years from date of purchase (one (1) year
from the date of purchase for compressors and tools used in production applications). Warranty is not
transferable. Proof of purchase date required. This warranty covers only damage resulting from defects in
material or workmanship; it does not cover conditions or malfunctions resulting from normal wear, neglect, abuse,
accident or repairs attempted or made by other than our national repair center or authorized warranty service
centers. Driver blades, bumpers, o-rings, pistons and piston rings are considered normally wearing parts. For
optimal performance of your Bostitch tool always use genuine Bostitch fasteners and replacement parts.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED T O THE IMPLIED WARRANTIES OF MERCHANTABILITYOR FITNESS FOR APARTICULAR
PURPOSE. BOSTITCH SHALL NOTBE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIALDAMAGES.
Some states and countries 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
and country to country.
To obtain warranty service in the U.S. return the product, together with proof of purchase, to the U.S. Bostitch
National or Regional Independent Authorized Warranty Service Center. In the U.S. you may call us at 1-800-5566696 or visit www.BOSTITCH.com for the location most convenient for you. In Canada please call us at 800-5677705 or visit www.BOSTITCH.com
2
3
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 connecting to air supply, 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 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 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. A contact 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.
This nailer produces SPARKS during operation. NEVER use the nailer near flammable
substances, gases or vapors including lacquer, paint, benzine, thinner, gasoline, adhesives,
mastics, glues or any other material that is -- or the vapors, fumes or byproducts of which are -flammable, combustible or explosive. Using the nailer in any such environment could cause an
EXPLOSION resulting in personal injury or death to user and bystanders.
MAINTAINING THE TOOL
When working on air tools note the warnings in this manual and use extra care when
evaluating problem tools.
4
N88 TOOL SPECIFICATIONS
All screws and nuts are metric.
FASTENER SPECIFICATIONS:
N88WWB
This tool uses a 28° wire collated stick nail in lengths of 2” to 3-1/2” (50 - 90mm) and shank diameters of .113” to .131” (2.8 - 3.3mm)
N88RH
Uses a 21° plastic collated full round head stick nails, in lengths of 2” to 3-1/2” (50-90mm) and shank diameters of .113” to .162” (2.8 - 4.1mm).
TOOL AIR FITTING:
This tool uses a 1/4” 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:
70 to 120 p.s.i.g. (4.9 to 8.4 kg/cm2). Select the operating pressure within this range for best fastener performance. DO NOT
EXCEED THIS RECOMMENDED OPERATING PRESSURE.
AIR CONSUMPTION:
The N88 requires 7.5 cubic feet per minute (212 liters per minute) of free air to operate at the rate of 100 nails per minute,
at 80 p.s.i. (5.6 kg/cm
2
). 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 nails per minute, you need 50% of the 7.5 c.f.m. (212 liters per minute) which
is required to operate the tool at 100 nails per minute.
OPERATION
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.
SEQUENTIAL TRIP
The Sequential Trip requires the operator to hold the tool against the work before pulling the trigger. This makes accurate
fastener placement easier, for instance on framing, toe nailing and crating applications. The Sequential Trip allows exact
fastener location without the possibility of driving a second fastener on recoil, as described under “Contact Trip”. The
Sequential Trip Tool has a positive safety advantage because it will not accidentally drive a fastener if the tool is
contacted against the work – or anything else – while the operator is holding the trigger pulled.
MODEL IDENTIFICATION:
Refer to Operation Instructions on page 4 before proceeding to use this tool.
CONTACT TRIP
Identified by:
BLACK TRIGGER
MODEL
TOOL
LENGTH HEIGHT WIDTH WEIGHT
ACTUATION
N88WWB
Sequential trip with 19-7/8” (505mm) 13-13/16” (351mm) 4-7/8” (124mm) 7.9lb. (3.6kg.)
contact trip option
N88WWB-2 Sequential Trip 19-7/8” (505mm) 13-13/16” (351mm) 4-7/8” (124mm) 7.9lb. (3.6kg.)
N88RH Sequential trip with 19-7/8” (505mm) 14-1/4” (362mm) 4-7/8” (124mm) 7.9lb. (3.6kg.)
contact trip option
N88RH-2 Sequential Trip 19-7/8” (505mm) 14-1/4” (362mm) 4-7/8” (124mm) 7.9lb. (3.6kg.)
SEQUENTIAL TRIP
Identified by:
GREY TRIGGER
5
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.
FITTINGS:
Install a male plug on the tool which is free flowing and which will release air pressure from the tool when disconnected
from the supply source.
HOSES:
Air hoses should have a minimum of 150 p.s.i. (10.6 kg/cm2) working pressure rating or 150 percent of the maximum
pressure that could be produced in the air system. The supply hose should contain a fitting that will provide “quick
disconnecting” from the male plug on the tool.
SUPPL
Y SOURCE:
Use only clean regulated compressed air as a power source for this tool. NEVER USE OXYGEN, COMBUSTIBLE GASES,
OR BOTTLED GASES, AS A POWER SOURCE FOR THIS TOOL AS TOOL MAY EXPLODE.
REGULATOR:
A pressure regulator with an operating pressure of 0 - 125 p.s.i. (0 - 8.79 KG/CM2) is required to control the operatiing
pressure for safe operation of this tool. Do not connect this tool to air pressure which can potentially exceed 200 p.s.i. (14
KG/CM2)as tool may fracture or burst, possibly causing injury.
OPERATING PRESSURE:
Do not exceed recommended maximum operating pressure as tool wear will be greatly increased. The air supply must be
capable of maintaining the operating pressure at the tool. Pressure drops in the air supply can reduce the tool’s driving
power. Refer to “TOOL SPECIFICATIONS” for setting the correct operating pressure for the tool.
FILTER:
Dirt and water in the air supply are major causes of wear in pneumatic tools. A filter will help to get the best performance
and minimum wear from the tool. The filter must have adequate flow capacity for the specific installation. The filter has to
be kept clean to be effective in providing clean compressed air to the tool. Consult the manufacturer’s instructions on
proper maintenance of your filter. A dirty and clogged filter will cause a pressure drop which will reduce the tool’s
performance.
LUBRICATION
Frequent, but not excessive, lubrication is required for best performance. Oil added through the
air line connection will lubricate the internal parts. Use BOSTITCH Air Tool Lubricant, Mobil
Velocite #10, or equivalent. Do not use detergent oil or additives as these lubricants will cause
accelerated wear to the seals and bumpers in the tool, resulting in poor tool performance and
frequent tool maintenance.
If no airline lubricator is used, add oil during use into the air fitting on the tool once or twice a
day. Only a few drops of oil at a time is necessary. Too much oil will only collect inside the tool
and will be noticeable in the exhaust cycle.
COLD WEA
THER OPERATION:
For cold weather operation, near and below freezing, the moisture in the air line may freeze
and prevent tool operation. We recommend the use of BOSTITCH WINTER FORMULA air tool
lubricant or permanent antifreeze (ethylene glycol) as a cold weather lubricant.
CAUTION: Do not store tools in a cold weather environment to prevent frost or ice formation
on the tools operating valves and mechanisms that could cause tool failure.
NOTE: Some commercial air line drying liquids are harmful to “O”-rings and seals – do not
use these low temperature air dryers without checking compatibility.
6
1. Open the magazine:
Pull pusher back to
engage the latch.
2. Load Nails:
Hold nailer down with
magazine tilted downward.
Insert stick of nails
3. Close Magazine:
Release pusher by first pulling back on
the pusher and then pressing the pusher
release tab. Slide pusher against nails.
NOTE: Use only nails recommended for use in Bostitch N88 nailers or nails which meet the
Bostitch specifications.
LOADING THE N88
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 (R1998) and provide both frontal
and side protection. NOTE: Non-side shielded spectacles and face shields
alone do not provide adequate protection.
TO PREVENT ACCIDENTAL INJURIES:
• Never place a hand or any other part of the body in nail discharge area of tool
while the air supply is connected.
• Never point the tool at anyone else.
• Never engage in horseplay.
• Never pull the trigger unless nose is directed at the work.
• Always handle the tool with care.
• Do not pull the trigger or depress the trip mechanism while loading the tool.
N88RH/WWB
FASTENER DEPTH CONTROL ADJUSTMENT
When using the framing contact arm:
The Fastener Depth Control Adjustment feature provides control of the nail drive depth from
flush with or just above the work surface to shallow or deep countersink.
TO ADJUST THE FASTENER DEPTH CONTROL:
DISCONNECT TOOL FROM AIR SUPPLY BEFORE ATTEMPTING
ANY PARTS DISASSEMBLY AND BEFORE CHANGING THE WORK
CONTACTING ELEMENT ADJUSTMENT.
1. Push in on locking button.
2. Adjust contact arm up to increase
depth of drive or down to decrease it.
3. Release locking button
DIRECTIONAL EXHAUST DEFLECTOR
The adjustable exhaust deflector can be
rotated into any desired position by hand
without the use of any tools.
REMOVING NAILS
ADJUST
PUSH IN
RELEASE
LOCKING BUTTON
CONTACT ARM
N88RH/WWB
1. Pull pusher back until it engages latch.
2. Slide nails back to opening and push out.
7
Exhaust Deflector
2
1
8
TOOL OPERATION
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 (R1998) and
provide both frontal and side protection. NOTE: Non-side shielded spectacles and face shields alone do
not provide adequate protection.
BEFORE HANDLING OR OPERATING THIS TOOL:
I. READ AND UNDERSTAND THE WARNINGS CONTAINED IN THIS MANUAL.
II. REFER TO “TOOL SPECIFICATIONS” IN THIS MANUAL TO IDENTIFY THE OPERATING
SYSTEM ON YOUR TOOL.
OPERATION
There are two available systems on BOSTITCH N88 pneumatic tools. They are:
1. CONTACT TRIP OPERATION 2. SEQUENTIAL TRIP OPERATION
1. CONTACT TRIP OPERATION
The CONTACT TRIP MODEL tool contains a contact trip that operates in conjunction with the
trigger to drive a fastener. There are two methods of operation to drive fasteners with a contact trip tool.
A. SINGLE FASTENER PLACEMENT: To operate the tool in this manner, first position
the contact trip on the work surface, WITHOUT PULLING THE TRIGGER. Depress
the contact trip until the nose touches the work surface and then pull the trigger to
drive a fastener. Do not press the tool against the work with extra force. Instead, allow
the tool to recoil off the work surface to avoid a second unwanted fastener. Remove your
finger from the trigger after each operation.
B. RAPID FASTENER OPERATION: To operate the tool in this manner, hold the tool
with the contact trip pointing towards but not touching the work surface. Pull the
trigger and then tap the contact trip against the work surface using a bouncing motion.
Each depression of the contact trip will cause a fastener to be driven.
The operator must not hold the trigger pulled on contact trip 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. A contact trip tool may bounce from the recoil of
driving a fastener and an unwanted second fastener may be driven, possibly causing injury.
2. SEQUENTIAL TRIP OPERATION:
The SEQUENTIAL TRIP MODEL contains a contact trip that operates in conjunction with the
trigger to drive a fastener. To operate a sequential trip tool, first position the contact trip on the work
surface WITHOUT PULLING THE TRIGGER. Depress the contact trip and then pull the trigger to drive a
fastener. As long as the contact trip is contacting the work and is held depressed, the tool will drive a
fastener each time the trigger is depressed. If the contact trip is allowed to leave the work surface, as is
typical with normal tool recoil, the sequence described above must be repeated to drive another fastener.
9
TOOL OPERATION CHECK:
CAUTION: Remove all fasteners from tool before performing tool operation check.
1. CONTACT TRIP OPERATION:
A. With finger off the trigger, press the contact trip against the work surface.
THE TOOL MUST NOT CYCLE.
B. Hold the tool off the work surface, and pull the trigger.
THE TOOL MUST NOT CYCLE.
C. With the tool off the work surface, pull the trigger.
Press the contact trip against the work surface.
THE TOOL MUST CYCLE.
D. Without touching the trigger, press the contact trip against the work surface,
then pull the trigger.
THE TOOL MUST CYCLE.
2. SEQUENTIAL TRIP OPERATION:
A. Press the contact trip against the work surface, without touching the trigger.
THE TOOL MUST NOT CYCLE.
B. Hold the tool off the work surface and pull the trigger.
THE TOOL MUST NOT CYCLE.
Release the trigger. The trigger must return to the trigger stop on the frame.
C. Pull the trigger and press the contact trip against the work surface.
THE TOOL MUST NOT CYCLE.
D. With finger off the trigger, press the contact trip against the work surface. Pull the
trigger.THE TOOL MUST CYCLE.
IN ADDITION TO THE OTHER WARNINGS CONTAINED IN THIS MANUAL OBSERVE THE
FOLLOWING FOR SAFE OPERATION
• Use the BOSTITCH pneumatic tool only for the purpose for which it was designed.
• Never use this tool in a manner that could cause a fastener to be directed toward the user or
others in the work area.
• Do not use the tool as a hammer.
• Always carry the tool by the handle. Never carry the tool by the air hose.
• Do not alter or modify this tool from the original design or function without approval from
BOSTITCH, INC.
• Always be aware that misuse and improper handling of this tool can cause injury to yourself and
others.
• Never clamp or tape the trigger or contact trip in an actuated position.
• Never leave a tool unattended with the air hose attached.
• Do not operate this tool if it does not contain a legible WARNING LABEL.
• Do not continue to use a tool that leaks air or does not function properly. Notify your nearest
Bostitch representative if your tool continues to experience functional problems.
10
MAINTAINING THE PNEUMATIC TOOL
When working on air tools, note the warnings in this manual and use extra
care evaluating problem tools.
CAUTION: Pusher spring (constant force spring). Caution must be used when working with
the spring assembly. The spring is wrapped around, but not attached to, a roller. If the spring
is extended beyond its length, the end will come off the roller and the spring will roll up with
a snap, with a chance of pinching your hand. Also the edges of the spring are very thin and
could cut. Care must also be taken to insure no permanent kinks are put in the spring as this
will reduce the springs force.
REPLACEMENT P
ARTS:
BOSTITCH replacement parts are recommended. Do not use modified parts or parts which
will not give equivalent performance to the original equipment.
ASSEMBLY PROCEDURE FOR SEALS:
When repairing a tool, make sure the internal parts are clean and lubricated. Use
MagnaLube or equivalent on all “O”-rings. Coat each “O”-ring with lubricant before
assembling. Use a small amount of oil on all moving surfaces and pivots. After reassembly
add a few drops of BOSTITCH Air Tool Lubricant through the air line fitting before testing.
AIR SUPPLY-PRESSURE AND VOLUME:
Air volume is as important as air pressure. The air volume supplied to the tool may be
inadequate because of undersize fittings and hoses, or from the effects of dirt and water
in the system. Restricted air flow will prevent the tool from receiving an adequate volume
of air, even though the pressure reading is high. The results will be slow operation,
misfeeds or reduced driving power. Before evaluating tool problems for these symptoms,
trace the air supply from the tool to the supply source for restrictive connectors, swivel
fittings, low points containing water and anything else that would prevent full volume flow
of air to the tool.
11
TROUBLE SHOOTING
PROBLEM CAUSE CORRECTION
Trigger valve housing leaks air O-ring cut or cracked Replace O-ring
Trigger valve stem leaks air O-ring/seals cut or cracked Replace trigger valve assembly
Frame/nose leaks air Loose nose screws Tighten and recheck
O-ring or Gasket is cut or cracked Replace O-ring or gasket
Bumper cracked/worn Replace bumper
Frame/cap leaks air Damaged gasket or seal Replace gasket or seal
Cracked/worn head valve bumper Replace bumper
Loose cap screws Tighten and recheck
Failure to cycle Air supply restriction Check air supply equipment
Tool dry, lack of lubrication Use BOSTITCH Air Tool Lubricant
Worn head valve O-rings Replace O-rings
Broken cylinder cap spring Replace cylinder cap spring
Head valve stuck in cap Disassemble/Check/Lubricate
Lack of power; slow to cycle Tool dry, lacks lubrication Use BOSTITCH Air Tool Lubricant
Broken cylinder cap spring Replace cap spring
O-rings/seals cut or cracked Replace O-rings/seals
Exhaust blocked Check bumper, head valve spring, muffler
Trigger assembly worn/leaks Replace trigger assembly
Dirt/tar build up on driver Disassemble nose/driver to clean
Cylinder sleeve not seated correctly
on bottom bumper Disassemble to correct
Head valve dry Disassemble/lubricate
Air pressure too low Check air supply equipment
Skipping fasteners; intermittent feed Wo rn bumper Replace bumper
Tar/dirt in driver channel Disassemble and clean nose and driver
Air restriction/inadequate air flow through
quick disconnect socket and plug Replace quick disconnect fittings
Worn piston O-ring Replace O-ring, check driver
Tool dry, lacks lubrication Use BOSTITCH Air Tool Lubricant
Damaged pusher spring Replace spring
Low air pressure Check air supply system to tool
Loose magazine nose screws Tighten all screws
Fasteners too short for tool Use only recommended fasteners
Bent fasteners Discontinue using these fasteners
Wrong size fasteners Use only recommended fasteners
Leaking head cap gasket Tighten screws/replace gasket
Trigger valve O-ring cut/worn Replace O-ring
Broken/chipped driver Replace driver (check piston O-ring)
Dry/dirty magazine Clean/lubricate use BOSTITCH
Air Tool Lubricant
Worn magazine Replace magazine
Fasteners jam in tool Driver channel worn Replace nose/check door
Wrong size fasteners Use only recommended fasteners
Bent fasteners Discontinue using these fasteners
Loose magazine/nose screws Tighten all screws
Broken/chipped driver Replace driver
Fastener misses Broken / chipped guide Replace guide
metal connector hole Broken / missing
158457 torsion spring Replace torsion spring
(grease before installation)
Broken Pendulum Replace pendulum and
torsion spring
Broken 158455 pin Replace pin and torsion spring
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