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 CONCESSIONNAIRE
STANLEY-BOSTITCH.
OPERATION and MAINTENANCE MANUAL
MANUAL DE OPERACIÓN Y DE MANTENIMIENTO
MANUEL D’INSTRUCTIONS ET D’ENTRETIEN
RN45B
COIL-FED PNEUMATIC ROOFING NAILER
CLAVADORA NEUMÁTICA ALIMENTADA POR ROLLO PARA TECHADO
CLOUEUR PNEUMATIQUE À ENROULEMENT POUR TOITURE
103280REVE 5/99
Stanley Fastening Systems
INTRODUCTION
The Stanley-Bostitch RN45B 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 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 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Air Supply: Fittings, Hoses, Filters, Air Consumption, Regulators,
Operating Pressure, Setting Correct Pressure . . . . . . . . . . . . . . 5
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Loading the Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Tool Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7, 8 & 9
Basic Tool Operation (diagram) . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Maintaining the Pneumatic Tool . . . . . . . . . . . . . . . . . . . . . . . . . 9
Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Driver Maintenance/Directional Exhaust. . . . . . . . . . . . . . . . . . . 11
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
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 WARRANTY
OF MERCHANTABILITY OR FITNESS FOR APARTICULAR 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
-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 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.
-4-
RN45B TOOL SPECIFICATIONS
All screws and nuts are metric.
FASTENER SPECIFICATIONS:
This tool uses coil roofing nails in lengths of 3/4” to 1-3/4” (19 - 45mm) with .120” (3mm)
shank diameter.
TOOL AIR FITTING:
This tool uses a free-flow connector plug, 1/4” N.P.T. The inside diameter should be .190”
(4.8mm) or larger. The fitting must be capable of discharging tool air pressure when
disconnected from the air supply.
OPERATING PRESSURE:
70 to 100 p.s.i.g. (4.9 to 7.0 kg/cm2). Select the operating pressure within this range for
best fastener performance.
DO NOT EXCEED THIS RECOMMENDED OPERATING
PRESSURE.
AIR CONSUMPTION:
The RN45B requires 3.9 cubic feet per minute of free air to operate at the rate of 100
nails 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
nails per minute, you need 50% of the tool’s c.f.m. which is required to operate the tool at
100 nails per minute.
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.
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 SEQUENTIAL TRIP
Identified by: Identified by:
BLACK TRIGGER GRAY TRIGGER
OPERATION
MODEL
TOOL
LENGTH HEIGHT WIDTH WEIGHT
ACTUATION
RN45B-1 Contact Trip 10.9” (276.8mm) 10.62” (269.7mm) 4.62” (117.3mm) 6lbs. (2.7kg.)
RN45B-2 Sequential Trip 10.9” (276.8mm) 10.62” (269.7mm) 4.62” (117.3mm) 6lbs. (2.7kg.)
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.
SUPPLY 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 SPECI-
FICATIONS” 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. Afilter will
help to get the best performance and minimum wear from the tool. The filter must have ade-
quate 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 STANLEY-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 WEATHER 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 STANLEY-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.
-5-
-6-
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.
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.
LOADING THE RN45B
This gauge can be used to control shingle spacing. Loosen two screws
to adjust gauge to desired shingle exposure, as shown.
Disconnect the air supply before making adjustments.
SHINGLE GAUGE
1.Open the magazine:
Pull down door latch and swing door/magazine
cover downward.
2.Check Adjustment:
The nailer must be set for the length of nail to be
used. Nails will not feed smoothly if the magazine
is not correctly adjusted. The magazine contains an
adjustable nail platform on which the nail coil rests.
The nail platform can be moved up and down to three nail settings.
To change setting pull up on the post and twist to the correct step.
1-3/4” (45mm) nails - use bottom step
1-1/4” , 1-1/2” (32, 38mm) - use middle step
3/4”, 7/8”, 1” (19, 22, 25mm) - use top step
3.Load the coil of nails:
Place the coil of nails over the post in the magazine. Uncoil enough nails to
reach the feed pawl. Place the first nail in front of the front tooth on the feed
pawl, in the driver channel. The nail heads must be in the slot in the nose.
NOTE: Use only nails recommended by Stanley-Bostitch for RN45B series nailers or nails
which meet the Stanley-Bostitch specifications.
4.Close the Door/Magazine Cover:
Swing the door/magazine cover closed. Check that the latch pin engages when released.
CLEANING THE ROOFING NAILER
Tar and dirt may build up on the nose and trip lever. This can prevent correct
operation. Remove any buildup with kerosene, #2 fuel oil or diesel fuel.
Do not dunk the nailer into these solvents beyond the height of the nail
heads, to avoid getting the solvent into the drive cylinder.
Dry off the nailer before use. Any oil film left after cleanup will accelerate
the tar buildup, and the nailer will require more frequent re-cleaning.
NOTE: Solvents sprayed on the nose to clean and free up the trip
may have the opposite effect! The solvent may soften the tar on
the shingles and cause tar buildup to be accelerated. Dry operation
is better, as noted above.
Do not use gasoline or similar highly flammable liquids to clean the nailer.
Vapor could be ignited by a spark, causing an explosion.
TOOL OPERATION
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 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.
1. TRIGGER OPERATION
A TRIGGER OPERATED tool requires a single action to drive a fastener. Each time the
trigger is pulled the tool will drive a fastener. The trigger operated model is intended for
use only when a contact trip or sequential trip cannot be used due to the requirements of
the application.
2. 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.
There are three available systems on STANLEY-BOSTITCH pneumatic tools. They are:
1. TRIGGER OPERATION 2. CONTACT TRIP OPERATION 3. SEQUENTIAL TRIP OPERATION
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.
3. 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, the
sequence described above must be repeated to drive another fastener.
-7-
TOOL OPERATION CHECK:
CAUTION: Remove all fasteners from tool before performing tool operation check.
1. TRIGGER OPERATED TOOL:
A. With finger off the trigger, hold the tool with a firm grip on the handle.
B. Place the nose of the tool against the work surface.
C. Pull the trigger to drive. Release the trigger and cycle is complete.
CAUTION: THE TOOL WILL CYCLE EACH TIME THE TRIGGER IS PULLED!
2. 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.
3. 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 STANLEY-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
STANLEY-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 Stanley-Bostitch representative if your tool continues to experience
functional problems.
-8-
-9-
BASIC TOOL OPERATION
Stanley-Bostitch pneumatic tools are cycled by a compressed air operated single piston design.
The following illustrations show the four functional cycles that occur when the tool is operated to
drive a fastener:
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 PARTS:
STANLEY-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 Parker “O”-LUBE
or equivalent on all “O”-rings. Coat each “O”-ring with “O”-LUBE before assembling. Use a small
amount of oil on all moving surfaces and pivots. After reassembly add a few drops of
STANLEY-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.
FIG.1
AT REST
FIG.2
DRIVING STROKE
FIG.3
END OF STROKE
TRIGGER STILL
PULLED
FIG.4
RETURNING
HEAD VALVE CLOSED
EXHAUST
OPEN
AIR IN
RETURN
CHAMBER
PUSHES
PISTON
UPWARD
EXHAUST
STILL
CLOSED
HEAD VALVE OPEN
TRIGGER VALVE
STILL ACTUATED
AIR FLOWS
INTO
RETURN
CHAMBER
PISTON IS
SEALED
AGAINST
BUMPER
TRIGGER VALVE
RELEASED –
AIR PRESSURE RETURNS
TO TOP OF HEAD VALVE
EXHAUST
SEALED BY
PISTON STOP
HEAD VALVE
TRIGGER VALVE
PORT
AIR RELEASED
FROM ABOVE
HEAD VALVE
TRIGGER VALVE
ACTUATED
EXHAUST
OPEN
HEAD VALVE CLOSED
SLOTS FOR AIR FLOW
FOR PISTON RETURN
TRIGGER VALVE RELEASED
PASSAGE FOR
AIR RELEASED FROM HEAD VALVE
TRIGGER VALVE PORT
(TO SUPPLY AIR TO TOP OF HEAD VALVE)
PISTON
STOP
RETURN
CHAMBER
BUMPER
RESERVOIR
OF HIGH
PRESSURE
AIR
HOLES IN
CYLINDER
WALL
RESERVOIR OF
HIGH PRESSURE AIR
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 STANLEY-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 STANLEY-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 Worn 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 STANLEY-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 STANLEY-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
-10-
TROUBLE SHOOTING
COIL NAILERS
Skipping fasteners; intermittent feed Feed piston dry . . . . . . . . . . . . . . . . . .Add STANLEY-BOSTITCH Air Tool Lubricant
in hole in feed piston cover
Feed piston O-rings cracked/worn . . . .Replace O-rings/check bumper and spring.
Lubricate assembly.
Check Pawl binding . . . . . . . . . . . . . . .Inspect Pawl and spring on door.
Must work freely.
Canister bottom not set correctly . . . . .Set canister bottom for length of nails
being used
Broken weld wires in nail coil . . . . . . . .Remove coil of nails and use another coil
Fasteners jam in tool/canister Wrong size fasteners for tool . . . . . . . .Use only recommended fasteners/check
canisterbottom adjustment
Broken welded wires in nail coil . . . . . .Remove coil of nails and use another coil
Wrong slide plate adjustment for
wire/plastic collated nail coil . . . . . . . . .Adjust switch pins for wire/plastic collated
nail coil
PROBLEM CAUSE CORRECTION
-11-
RN45B DRIVER MAINTENANCE INSTRUCTIONS
Worn driver causing poor quality or loss of power:
-Wear on the driving tip will affect the nail drive, giving symptoms of bent and incompletely driven
nails, and damaged nail heads.
-The driver length may be adjusted to allow the driving tip to be redressed to compensate for wear.
Heat and precise measurement are required. Contact a qualified service technician for this
adjustment.
-The length setting for a new driver is shown below. Measurement is from the bottom face of
the main piston.
-Note that the measurement from the top of the piston gives the maximum amount the driver may be
adjusted to allow redressing. Always extend the driver the minimum required to allow redressing to
restore the driving end; several redressings will be possible before this maximum depth is reached.
DIRECTIONAL EXHAUST DEFLECTOR
Loosen screw as shown. Adjust to desired exhaust direction and
tighten screw.
ACCESSORIES AVAILABLE
BC601 4 oz. Stanley-Bostitch Air-Tool Lubricant
BC602 1 pint Stanley-Bostitch Air-Tool Lubricant
BC603 1 pint Stanley-Bostitch "Winter-Formula" Air-Tool Lubricant
BC604 1 quart Stanley-Bostitch Air-Tool Lubricant
100679 O-Ring Lube 1 lb. can
SEQ1 Sequential Trip Conversion Kit
VSA2 Vinyl Siding Kit
DC6 Depth Control Kit
851325 Loctite® 271 Packet
ORK13 O-Ring Kit
BK11 Bumper Kit
FPK1 Frame Protector Kit
4.675” - 4.685”
(118.7mm - 119.0mm)
5/32” (4.0mm) maximum limit of driver recessed into piston.
Do not exceed this limit.
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