Simpson PT-27HDA Operator's Manual

Download

Page 1

WARNING

OPERATOR’S MANUAL

Read This Manual

BEFORE Operating This Tool

Model PT-27HDA

5956 W. Las Positas Blvd., Pleasanton, CA 94588 • www.strongtie.com

T-A-PT27HDA14 12/14

Simpson Strong-Tie Company Inc. (“Simpson”) provides this limited warranty to original purchaser. This product, if properly used and maintained in compliance with all instructions and warnings, will be free from substantial defects in material and manufacturing for one year from purchase date. Purchaser’s sole remedy is replacement

upon return to Simpson within one year of purchase (shipping prepaid).

WHERE LAWFUL, SIMPSON DISCLAIMS ALL OTHER

WARRANTIES, INCLUDING BUT NOT LIMITED TO IMPLIED

WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

A PARTICULAR PURPOSE BEYOND THIS WARRANTY

PERIOD. SOME STATES DO NOT ALLOW LIMITATIONS

ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE

ABOVE LIMITATION MAY NOT APPLY TO YOU. WHERE

LAWFUL, UNDER NO CIRCUMSTANCES SHALL SIMPSON

BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL OR SPECIAL

DAMAGES OR DIRECT OR INDIRECT LOSS OF ANY KIND, INCLUDING BUT NOT LIMITED

TO BODILY INJURY, DEATH OR PROPERTY DAMAGE. SIMPSON’S ENTIRE LIABILITY IS

LIMITED TO THE PURCHASE PRICE OF THIS PRODUCT. SOME STATES DO NOT ALLOW THE

EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE

LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU. SIMPSON IS IN NO WAY LIABLE FOR

INCIDENTS RESULTING FROM USE WITHOUT PROPER CERTIFICATION OR DISREGARD OF

INSTRUCTIONS AND WARNINGS. THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL

RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE.

Return Tools To:

Northwest U.S.A. Southwest U.S.A. Northeast U.S.A. Simpson Strong-Tie Co. Inc. Simpson Strong-Tie Co. Inc. Simpson Strong-Tie Co. Inc. 5151 S. Airport Way 12246 Holly Street 2600 International Street Stockton, CA 95206 Riverside, CA 92509 Columbus, OH 43228 (209) 234-7775 (800) 999-5099 (614) 876-8060

Southeast U.S.A. Eastern Canada Western Canada Simpson Strong-Tie Co. Inc. Simpson Strong-Tie Co. Inc. Simpson Strong-Tie Co. Inc. 2221 Country Lane 5 Kenview Boulevard 11476 Kingston Street McKinney, TX 75069 Brampton, ON L6T 5G5 Maple Ridge, BC V2X 0Y5 (972) 542-0326 (905) 458-5538 (604) 465-0296

LIMITED WARRANTY (ONE YEAR)

ON SIMPSON STRONG-TIE

BRAND TOOLS

The PT-27HDA tool complies with OSHA requirements and with ANSI A10.4 2007 speciﬁcations.

One Year

Limited

Warranty

Page 2

SAFETY STARTS WITH YOU

-1-

A. TRAINING

1. All operators must complete the tool manufacturer’s training before attempting to take an exam or to operate this Simpson Strong-Tie® tool. You must obtain certiﬁcation of training from an authorized Simpson Strong-Tie® instructor. If such training is not available where you purchased the tool, call or write Simpson Strong-Tie before attempting to operate the tool for the location of the nearest authorized instructor. Remember, obtaining this instruction is YOUR RESPONSIBILITY.

2. Read this manual completely and understand its contents fully

before attempting to operate the tool. If there is anything in this manual that you do not fully understand, ask your instructor or call Simpson Strong-Tie for information. Reading and understanding this manual is YOUR RESPONSIBILITY.

B. LIMITATIONS

1. Just as no instruction book of any kind can forewarn a learner

about all possible situations or emergencies that may arise, neither can Simpson Strong-Tie instructors or printed instructions detail all possible conditions or circumstances surrounding the use of this tool or its supporting products. Recognizing these circumstances and reacting in a safe manner is YOUR RESPONSIBILITY.

2. Simpson Strong-Tie disclaims any responsibility for injury or death

which may result from any disregard of this manual or the verbal instruction of the authorized Simpson Strong-Tie instructor. Following the rules of safe operation given to you here and verbally is YOUR RESPONSIBILITY.

SAFETY STARTS WITH YOU!!!

OBTAIN AUTHORIZED TRAINING

TABLE OF CONTENTS

-2-

Safety Starts with You .....................................................................................1

Introduction .................................................................................................... 2

General Handling of P.A.T. and Powder Loads ................................................. 3

Making Safe Fastenings .................................................................................. 4

The “No’s” of P.A.T. Fastening .........................................................................5

Before Chambering a Powder Load ................................................................. 6

Safe Handling Principles of P.A.T. .................................................................... 7

Operating Principles of P.A.T. ...........................................................................8

Schematic and Parts for the PT-27HDA ....................................................9–10

Principles and Guidelines for Proper Fastening ....................................... 11–12

How to Load and Fire the PT-27HDA ....................................................... 13–14

Dissassrmbly and Reassembly of the PT-27HDA .................................... 15–16

Cleaning and Maintenance ............................................................................ 17

PT-27HDA Kit Contents .................................................................................17

Trouble-Shooting Chart .................................................................................18

Tool Warranty .................................................................................. Back Cover

INTRODUCTION

The Simpson Strong-Tie® PT-27HDA tool is a low-velocity or indirect-acting powder-actuated tool (P.A.T.). Do not attempt to operate this or any other tool before obtaining proper training and operator certiﬁcation.

READ THIS MANUAL CAREFULLY!

It will help you operate the tool with the greatest SAFETY and efﬁciency by providing you with an understanding of the safety features, operating principles and limitations of the tool and its use. Simpson Strong-Tie disclaims any responsibility for incidents resulting from the disregard of these instructions.

Page 3

-4-

MAKING SAFE FASTENINGS

BASE MATERIAL SUITABILITY AND THE CENTER PUNCH TEST

Before loading the tool or fastening into any material, check the suitability and thickness of the base material. To check base material suitability, give it the center punch test.

CENTER PUNCH TEST:

Using the fastener as a punch, strike a solid blow to it with a hammer to puncture the actual material you wish to fasten into, then look for these results:

1. If the point of the fastener is blunted, the material is too hard and is unsuitable. If the material is too hard, the fastener can ricochet, and possibly escape, striking you or bystanders and cause serious injury or death.

2. If the material cracks or shatters, it is too brittle and is unsuitable. This can result in particles striking the operator or bystanders, or the fastener could pass completely through the base material, causing someone serious injury or death.

3. If the fastener sinks into the material with the hammer blow, the material is too soft and is unsuitable. If the material is too soft, the fastener can pass completely through and strike someone on the other side, causing serious injury or death.

DO NOT USE POWDER-ACTUATED TOOLS FOR FASTENING INTO THESE MATERIALS:

1. Vertical mortar joints 6. Hardened or tool-grade steel

2. Bricks 7. Cast iron

3. Hollow block or tile 8. Welded areas or torch cuts

4. Glazed tile 9. Spring steel

5. Glass 10. Natural rock

BASE MATERIAL THICKNESS

Thickness of the base material is perhaps the most important consideration for good safe fastenings. In concrete, the thickness must be 3 times the shank penetration; in other words, for 1" of shank penetration, the concrete must be at least 3" thick. In steel, the thickness must be equal to or greater than the diameter of the shank. Fastening into any base material which is too thin may allow the fastener to pass through and escape — resulting in serious injury or death.

-3-

GENERAL HANDLING OF P.A.T. AND POWDER LOADS

GENERAL HANDLING OF THE PT-27HDA AND ALL P.A.T. TOOLS

1. Always point the tool away from yourself and all bystanders.

2. Open the tool before handling to make sure it is not loaded.

3. Never place your hand over the front (muzzle) of the tool.

4. Never operate the tool without checking to see that the barrel is free

of obstructions and that the tool is clean and in good working condition.

5. Never attempt to alter, modify or manufacture parts for use in your

Simpson Strong-Tie® tool; this can cause malfunctions and result in unsafe functioning of the tool. Use only genuine Simpson Strong-Tie parts, fasteners and powder loads at all times.

6. Operators and bystanders must wear eye and ear protection, and head

protection is recommended. Serious injury or death can occur if these safety items are not used.

7. Posting a warning sign, “Warning, Powder-Actuated Tool in Use” is a

minimum warning where P.A.T. tools are in use.

8. REMEMBER: use common sense and good judgment. Use this tool for

its intended purpose only. Know the material you are fastening into and make certain it is compatible with the powder-actuated tool.

HANDLING THE PT-27HDA, AND POWDER LOADS

1. Never carry powder loads in the same pocket or container

with fasteners or any other hard objects.

2. Never use powder-actuated loads in ﬁrearms. They are more

powerful than normal small arms ammunition.

3. Never carry a loaded tool from job to job.

4. Never use the tool for anything other than its intended purpose.

5. Never use powder-actuated tools in ﬂammable atmospheres.

6. Never attempt to force a load into the chamber of the tool.

7. Never strike or pry a load.

8. Always wear eye, ear and head protection.

9. Always properly brace yourself when working on scaffolding

or ladders.

Page 4

THE “NO’S” OF P.A.T. FASTENING

-5-

GUIDELINES FOR SAFE FASTENING

1. Never hold the tool at an acute angle to the work surface. The tool

must be held perpendicular to the work surface, and only after you've made certain that NO debris is present on the surface.

2. Never set a fastener too close to another installed fastener,

as this can cause a ricochet.

3. Never fasten less than 3" from the edge of unsupported concrete

or masonry, or less than 1⁄2" from the edge of steel, except for speciﬁc applications recommended by the tool manufacturer.

4. Never fasten into rough, spalled, cracked or uneven concrete.

Fasten at least 3" from the outer edge of a spalled area.

5. Never fasten into material which is too hard, such as hardened steel,

welds, cast steel, marble, spring steel, natural rock, etc. This could cause the fastener to shatter and escape and result in serious injury or death.

6. Never fasten into material which is too brittle, such as glass, glazed

brick, glazed tile, slate, etc. This could cause the material to shatter and result in serious injury or death.

7. Never fasten into material which is too soft, such as wood, plaster,

drywall composition board, plywood, etc. This could cause the fastener to pass through and escape, resulting in serious injury or death.

8. Never fasten through an existing hole in any material, as the fastener

could hit the edge of the hole and ricochet.

9. Never leave the chamber loaded. If you decide not to make a

fastening after having loaded the tool, remove both the powder load and fastener from the tool before returning it to its case.

10. Never place your hand or any part of your body over the muzzle,

or point the tool toward any person when the tool is chambered with a load.

BEFORE CHAMBERING A POWDER LOAD

-6-

PREPARE FOR LOADING

1. Always open the tool before handling it to be certain it is unloaded.

2. Always check to be sure that the tool is clean. Excessive dirt or debris can

cause accidental ﬁring or misﬁring of the tool.

3. Never load or ﬁre the tool in an explosive atmosphere or when ﬂammables are nearby.

4. Never use improper power loads or fasteners in the tool, as this may be unsafe or damage the tool.

5. Always insert the fastener ﬁrst, and the load last. Make sure you never double load the fasteners.

6. Never allow bystanders to gather around you when using the tool.

7. Never guess — before fastening into any unknown base material, particularly into walls, perform the center punch test described in this manual.

8. Never guess — once you determine that the base material is suitable, make a test fastening with a Green (P27LVL3) load. If the Green does not set the fastener, try Yellow (P27LVL4), Red (P27LVL5) and then Purple (P27LVL6) until the proper power is determined.

SELECTING FASTENERS AND LOADS

Simpson Strong-Tie® Part # Power Level Color

P27LVL3 3 Green

P27LVL4 4 Yellow P27LVL5 5 Red P27LVL6 6 Purple

Simpson Strong-Tie

Fasteners

Description

PSLV3-XXXXXX Series

⁄

" Threaded Studs with .205 Shank Dia. with 10mm fastener

guide and piston.

PSLV4-XXXXXX Series

⁄

" Threaded Studs with .150 Shank Dia. with 8mm fastener

guide and piston.

PHN-XXX Series

8mm Headed Fasteners with 3.7mm Shank Dia. with 8mm fastener guide and piston.

PDPA-XXX Series

.300" Headed Fasteners with .157 Shank Dia. with 8mm fastener guide and piston

THE PT-27HDA IS DESIGNED FOR THE FOLLOWING LOADS:

THE PT-27HDA IS DESIGNED FOR THE FOLLOWING FASTENERS:

⁄

" – 3" lengths

Page 5

SAFE HANDLING PRACTICES OF P.A.T.

- 7-

1. If the powder load does not ﬁre after pulling the trigger, hold the tool

ﬁrmly against the work surface for at least 10 seconds. Carefully remove the tool from the work surface, making sure to point it away from yourself and any bystanders. Remove the load and dispose of it in a can of water. Unﬁred loads must never be thrown in trash containers or carelessly discarded in any way.

2. NEVER attempt to force or pry an unﬁred powder load from the chamber

plug with a sharp or pointed object, as this may cause an accidental discharge.

3. NEVER attempt to disassemble a jammed tool containing a live powder

load. Tag the tool “DO NOT USE” and store it safely in a locked case. Call your Simpson Strong-Tie® representative for tool repair.

4. If at any time during the operation of the tool you feel it is not working

properly, STOP using it and call your Simpson Strong-Tie representative.

5. If unnecessary bystanders are in the area, tell them to leave. Warn all

others that you are using a powder-actuated tool.

6. Check the work surface to be sure it is clear of any debris. Clear away

any debris so that the tool sits ﬂush on the work surface.

7. Check the work area for explosive or ﬂammable materials. If any are

found, remove them before operating the tool.

8. Check the chamber of the tool to be sure there is no dirt, grit

or foreign objects present.

9. Check the barrel to make sure you don’t double load it with fasteners,

and that it is clear of any obstruction.

10. Any tool found not to be in proper working condition should be

immediately removed from service and tagged “Defective Tool,” until it has been repaired according to manufacturer’s instructions.

BEFORE loading the tool, operate it a few times on a solid surface making certain all parts move freely and that the ﬁring pin clicks when the tool is fully depressed and the trigger is pulled. “Dry ﬁring” will not damage the tool.

OPERATING PRINCIPLES OF P.A.T.

-8-

SAFETY STARTS WITH YOU!

As the powder-actuated tool operator, your safety and the safety of those around you should always be kept in mind. Consider that the least powerful load used in powder actuated stud drivers produces approximately 10 times the power of a .22 caliber long riﬂe cartridge. Respect this power as you would a chain saw, a lawn mower, or a riﬂe.

THERE ARE TWO TYPES OF POWDER-ACTUATED TOOLS:

CAUTION: The PT-27HDA is capable of fastening into concrete and/or steel.

The fastener enters the work surface with an extreme amount of energy. Make certain not to misdirect the energy.

INDIRECT-ACTING TYPE TOOL

Indirect-acting type tools work by expanding gases that act directly on a piston, which drives the piston forward to strike the fastener.

DIRECT-ACTING TYPE TOOL

Direct-acting type tools work by expanding gases that act directly on the fastener without the use of a piston. Direct-acting tools are no longer manufactured in North America and are regarded as far less safe to operate than indirect-acting tools.

Powder load releases energy

Power fastener installs into concrete, cement block or steel!

Piston drives forward and strikes the pin

The PT-27HDA is an indirect-acting type tool.

Page 6

-9- -10-

SCHEMATIC AND PARTS FOR THE PT-27HDA TOOL

PT-27HDA tool components

Key Part No. Description

1 PTHDA-700801 Stabilizer Plate

2 PTHDA-700820 Spall Shield

#3 PTHDA-700330 Guide Assembly (10mm)

#3 PTHDA-700340 Guide Assembly (8mm)

4 PTHDA-700303 O-Ring, Guide

5 PTHDA-700302 Buffer

6 PTHDA-700240 Silencer Slide

#7 PTHDA-700310 Piston Assembly (10mm)

#7 PTHDA-700320 Piston Assembly (8mm)

8 PTHDA-700314 Piston Ring

9 PTHDA-700301 Barrel

10 PTHDA-700350 Ejector

11 PTHDA-700203 Holder

12 PTHDA-657013 Hexagon Screw, Holder

13 PTHDA-700202 Spring, Holder

14 PTHDA-700210 Receiver

15 PTHDA-700002 Pawl

16 PTHDA-700003 Spring, Pawl

17 PTHDA-272216 O-Ring, Pawl

18 PTHDA-700004 Cap, Pawl

19 PTHDA-236222 Spring, Sear

20 PTHDA-700204 Sear

21 PTHDA-250605 Firing Pin

22 PTHDA-700205 Spring, Firing Pin

23 PTHDA-700201 Receiver Stop

24 PTHDA-700120 Trigger Assembly

25 PTHDA-700125 Spring,Trigger

26 PTHDA-300107 Trigger lock Nut

27 PTHDA-300108 Trigger Pin

28 PTHDA-700110 Handle

29 PTHDA-301015 Bolt

30 PTHDA-700001 Plug Cover

Page 7

PRINCIPLES AND GUIDELINES FOR PROPER FASTENING

- 11-

FASTENING INTO MASONRY MATERIALS:

Masonry materials suitable for fastening into include:

- Poured concrete

- Precast concrete

- Pre-stressed concrete

- Grout ﬁlled concrete block

- Grouted joints

Fasteners are primarily held into masonry by a combination of clamping of concrete around the fastener, and sintering. Factors that inﬂuence a fastener driven into conrete include:

- Depth of penetration

- Compressive strength of concrete

- Fastener spacing and edge distance

- Fastener shank diameter

- Concrete aggregate

.157" Dia.

Shank Penetration

⁄

" Stud

Penetration

Concrete Block & Joints

1"–1

⁄

" 1

⁄

"–1

⁄

Concrete 2000-2500 psi

9-10 times Shank Dia.

or 1

⁄

"–1

⁄

1"–1

⁄

Concrete 2500-4000 psi

7-8 times shank Dia.

or 1"–1

⁄

1"–1

⁄

Precast or prestressed

concrete 4,000 psi

5-6 times shank Dia.

⁄

"–1"

⁄

"–1"

PROPER DEPTH OF PENETRATION:

FASTENER EDGE DISTANCE ON CONCRETE:

Distance should be no closer than 3".

MINIMUM DISTANCE BETWEEN FASTENINGS: .300 and 8 mm headed fasteners – 3" spacing.

⁄4" and 3⁄8" threaded fasteners – 6" spacing.

CONCRETE THICKNESS: Concrete thickness must be at least 3 times the fastener penetration.

PRINCIPLES AND GUIDELINES FOR PROPER FASTENING

-12-

FISH-HOOKING:

“Fish-hooking” is when the fastener curves when driven into concrete. This is caused by the fastener hitting large, hard, or excessive amounts of aggregate, rebar, or any hard object. Fish-hooking can reduce the holding power of the fastener, result in spalling, and may increase unsafe conditions due to escaping particles. Fish-hooking can be minimized by:

- Reducing shank penetration

- Increasing shank diameter

- Using appropriate powder load level. Excessive power can cause over-driving.

- Using a spall guard or stabilizer.

FASTENING INTO STEEL:

The most common type of steel fastened into is structural steel in the form of beam, angle iron, channel, tee, plate, and strip. The holding power of the powder-actuated fastener is a function of the gripping action of the steel base material around the fastener, and the fusion of the fastener to the base material.

FACTORS THAT INFLUENCE THE HOLDING POWER OF FASTENERS IN STEEL ARE:

- Shank diameter: Larger shank diameters increase holding power

- Thickness of steel base material: Thicker base material increases holding power

- Fastener Point Penetration: Getting the point to pass through base material by approximately 1⁄4" increases holding power

- Knurled Fasteners: Knurling on the fastener provides interlocking of the shank and the base material, which increases the holding power

GENERAL RULES:

Minimum spacing of fasteners into steel is 11⁄2". Minimum edge distance of fasteners into steel is 1⁄2". Steel Thickness must be no less than than the shank diameter of the fastener.

Page 8

HOW TO LOAD AND FIRE THE PT-27HDA TOOL

-14-

5. After making the fastening, lift the tool off the work surface and pull the nosepiece sharply forward. This action resets the piston and ejects the powder load shell from the chamber.

WARNING: ALWAYS INSTALL THE FASTENER IN THE TOOL

FIRST, AND CHAMBER THE POWDER LOAD LAST.

4. Depress the tool ﬁrmly against the work surface using both hands, then pull the trigger. Make certain you hold the tool perpendicular to the work surface. Using the supplied spall suppressor will help ensure the tool is perpendicular to the work surface and will help to minimize concrete spalling when the fastener is installed.

HOW TO LOAD AND FIRE THE PT-27HDA TOOL

-13-

1. Open the tool. Grasp the nosepiece and pull sharply forward until you feel a positive stop, then pull the nosepiece back until it stops and is fully closed. This resets the piston. Open the tool again.

2. Insert the fastener into the nosepiece of the tool, head or threaded end ﬁrst. Push the fastener until the pointed end is even with the face of the nosepiece or, if a pre-assembled fastener is used, until the nosepiece is against the fastener accessory.

3. Select the proper power level, long .27 caliber load and insert it into the ﬁring chamber. With the powder load fully seated, carefully slide the barrel closed.

Page 9

-15-

DISASSEMBLY AND REASSEMBLY OF THE PT-27HDA

DISASSEMBLY

1. Remove the spall suppressor using a wrench.

2. Unscrew the guide using a wrench. Remove the buffer and inspect for wear. Replace if damaged.

3. Remove the silencer slide.

4. Remove the piston reset pin assembly, including the cap, reset pin and reset pin spring.

5. Remove the barrel from the receiver.

Suppressor

Guide

Buffer

-16-

DISASSEMBLY AND REASSEMBLY OF THE PT-27HDA

1. Remove the excess oil with a cloth and push piston into the barrel in reverse order of photo #6.

2. Slide barrel assembly back into receiver and align the barrel slot with pawl housing in reverse order of photo #5.

3. Insert pawl assembly and screw tight, in reverse order of photo #4.

4. Place silencer slide onto receiver, in reverse order of photo #3.

5. Insert the buffer into the guide and tighten the guide ﬁrmly onto the barrel, in reverse order of photo #2. Use only 10mm pistons with

10mm piston/fastener guides and use only 8mm pistons with 8mm piston/fastener guides. Note: 8mm piston and guide are for ¼" studs and .300" headed pins. 10mm piston and guide are for 3⁄8" studs.

6. Reattach the spall shield and tighten ﬁrmly, in reverse order of photo #1.

6. Pull the piston assembly out of the barrel.

7. Clean the inside of the barrel and piston with a detergent oil and wire brush.

DISASSEMBLY (CONT.):

REASSEMBLY:

Page 10

-18-

PROBLEM POSSIBLE CAUSE REMEDY

Tool fails to ﬁre Bad power load Change to a new load

Fired load will not extract Tool not being

opened completely

Firmly snap the tool open from the closed position.

Residue in load chamber Clean chamber with lubricant oil

and wire brush

Stuck ﬁred load Disassemble barrel and piston

assembly. Use a 1/8" dia. brass or aluminum rod to gently push load out of chamber.

Damaged ejector Contact your local

Simpson Strong-Tie representative

Reduction or loss of power Worn piston ring Remove piston and replace

piston ring — clean tool at this time

Piston not returning to full front position

Barrel must be pulled completely forward to properly position the piston

Piston stuck in down position Piston over-driven and stuck in

muzzle guide

Be sure tool is unloaded, tap on hard surface or drive piston back with a brass hammer. Replace buffer.

Movement of barrel is rough Lack of proper cleaning Clean the tool according to

instructions in the manual

Tool does not depress completely

Tool not properly assembled Disassemble tool barrel assem-

bly and reassemble. Make sure parts are aligned properly.

AS WITH ANY FINE TOOL, PROPER MAINTENANCE IS ABSOLUTELY NECESSARY FOR THE

TOOL TO OPERATE SAFELY AND EFFICIENTLY. DAILY CLEANING IS ADVISED. IN EXTREME

USE CASES, IT MAY BE NECESSARY TO CLEAN THE TOOL MORE OFTEN.

TROUBLE SHOOTING CHARTCLEANING AND MAINTENANCE

- 17-

MAINTAINING THE TOOL:

A clean tool always functions best. The PT-27HDA should be cleaned each day after normal use or after driving approximately 500 continuous fastenings.

1) Disassemble the fastener guide, piston barrel, and buffer.

2) Use the provided brushes and cleaning lubricant to spray, brush and wipe clean the chamber bushing assembly, piston, stop ring, inside the barrel guide.

TOOL PARTS TO BE CLEANED:

Ejector/chamber

Piston

Barrel

Buffer

Chamber Bushing Assembly

PT-27HDA KIT CONTENTS