1.KEEP ALL SAFETY DEVICES IN PLACE and in working order.

2.REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of check- ing to see that keys and adjusting wrenches are removed from tool before operation.

5.KEEP CHILDREN AND VISITORS AWAY. All children and visitors should be kept at a safe distance from work area.

6.MAKE WORKSHOP CHILD PROOF by locking your shop and shutting off air valves.

10.USE PROPER AIR HOSE for the tool. Make sure your air hose is in good condition and is long enough to reach your work without stretch- ing.

11.WEAR PROPER APPAREL. Do not wear loose clothing, gloves, neckties, rings, bracelets, or other jewelry which may get caught in moving parts. Non-slip footwear is recommended. Wear a protective hair covering to contain long hair.

12.ALWAYSUSESAFETYGLASSES.

Also use a face or dust mask if cut- ting operation is dusty. Everyday eyeglasses only have impact resis- tant lenses, they are NOT safety glasses.

13.WEAR APPROVED HEARING PROTECTION. Air escaping from pneumatic tools can exceed safe exposure limits and may cause hearing damage with prolonged exposure.

14.SECURE WORK. Use clamps or a vise to hold work when practical. It is safer than using your hand and frees both hands to operate tool.

15.MAINTAIN TOOLS WITH CARE.

Keep tools lubricated and clean for best and safest performance. Follow instructions for lubricating and changing accessories.

16.REDUCE THE RISK OF UNINTENTIONAL FIRING. Do not carry tool with hand on trigger and always disconnect from air when not in use.

17.DISCONNECT TOOLS before ser- vicing, changing accessories, or moving to another location.

18.DO NOT OVERREACH. Keep proper footing/balance at all times.

19.USE THE RECOMMENDED ACCESSORIES. Consult owner???s manual for recommended acces- sories. The use of improper acces- sories may cause risk of injury.

20.CHECK FOR DAMAGED PARTS BEFORE USING. Check for bind- ing and alignment of parts, broken parts, part mounting, loose bolts, and any other conditions that may affect machine operation. Repair or replace damaged parts.

21.NEVER LEAVE UNATTENDED

TOOL CONNECTED TO AIR.

Disconnect the air hose and do not leave tool until it is relieved of any built up pressure.

22.NEVER ALLOW UNTRAINED

USERS TO USE THIS TOOL

WHILE UNSUPERVISED.

23.IF YOU ARE UNSURE OF THE

INTENDED OPERATION, STOP USING TOOL. Seek formal training or research books or magazines that specialize in pneumatic tools.

24.BE AWARE OF HOSE LOCATION

WHEN USING PNEUMATIC TOOLS. Hoses can easily become a tripping hazard when laid across the floor or spread out in a disorga- nized fashion.

1.Hand injuries: Do not place your hands near the nail point of entry. A nail can deflect and tear through the surface of the workpiece, puncturing your hand or fingers.

2.combustible gases: Never con- nect the nailer to pressurized oxy- gen or other combustible gases as a power source. Only use filtered, lubri- cated, and regulated compressed air.

3.safe handling: Never point the nailer at others! Do not keep the trig- ger pulled when loading fasteners, carrying, or holding tool. Carry the nailer only by the handle, never by any other part. Do not carry the nailer by the air hose. Disconnect the nailer from the air hose when going up and down ladders.

4.MODIFICATIONS: DO NOT modify this tool or bypass the safety nose mechanism.

5.check valve: Do not use a check valve or any other fitting that allows air to remain in the tool.

6.HOSE USAGE: Make sure your air hose is designed for the tool in use, is in good condition, and is long enough to reach your work without stretching. However, an overly long air hose in the work area may be a tripping haz- ard.

7.OPERATING QUESTIONS: If you are not sure about the intended oper- ation, stop using the nailer. Seek formal training.

8.cleaning: Never use gasoline or other flammable liquids to clean the nailer; vapors in the nailer will ignite by a spark and cause it to explode.

9.Maintenance: Always disconnect air from the nailer when servicing or installing nails. During maintenance, a nailer connected to air may fire acci- dentally, causing serious personal injury.

10.compressed air rating: Do not connect the nailer to compressed air that exceeds 120 PSI.

Read the manual before operation. Become familiar with this nailer, its safety instructions, and its operation before beginning any work. Serious personal injury may result if safety or operational information is not under- stood or followed.

Operating this nailer can propel objects into the air, causing imme- diate eye damage. To protect your- self, always wear American National Standards Institute (ANSI) approved safety glasses or goggles when oper- ating this equipment. In addition, this nailer discharges at up to 85-90 deci- bels. To protect your hearing, always wear ANSI approved ear protection when operating this nailer.

Never point this nailer at yourself or another person! Always pay attention to the direction this nailer is pointed. Use this tool with respect and caution to lessen the possibility of operator or bystander injury. Ignoring this warn- ing may result in serious personal injury.

Nailer accidents routinely happen while moving the gun to another location, such as up ladders, to another room, or even another job site. Always disconnect the gun immediately after use and never transport the gun while connected to the air???even if the air compressor is disconnected from its power source!

No list of safety guidelines can be complete. Every shop environment is different. Always consider safety first, as it applies to your individu- al working conditions. Use this and other tools with caution and respect. Failure to do so could result in seri- ous personal injury, damage to equip- ment or poor work results.

We are proud to offer the Grizzly Model H8234??? 28?? Framing Nailer. This model is part of a growing Grizzly family of fine pneumatic tools. When used according to the guidelines set forth in this manual, you can expect years of trouble-free, enjoyable operation and proof of Grizzly???s commit- ment to customer satisfaction.

The specifications, details, and photo- graphs in this manual represent the Model H8234 as supplied when the manual was prepared. However, owing to Grizzly???s pol- icy of continuous improvement, changes may be made at any time with no obliga- tion on the part of Grizzly.

Tool Data

If you have any comments regarding this manual, please contact us:

Grizzly Industrial, Inc.

C/O Technical Documentation Manager

P.O. Box 2069

Bellingham, WA 98227-2069 Email: manuals@grizzly.com

Most importantly, we stand behind our tools. If you have any service questions or parts requests, please call or write us at the location listed below.

Grizzly Industrial, Inc.

1203 Lycoming Mall Circle

Muncy, PA 17756

Phone: (570) 546-9663

Fax: (800) 438-5901 E-Mail: techsupport@grizzly.com Web Site: http://www.grizzly.com

Your new nailer was carefully packaged for safe shipping. If you discover any damage after you have signed for delivery, immedi- ately call Customer Service at (570) 546- 9663 for advice.

Save the containers and all packing mate- rials for possible inspection by the car- rier or its agent. Otherwise, filing a freight claim can be difficult.

When you are completely satisfied with the condition of the shipment, you should inventory the contents.

After you open the nailer box, you should find the following.

A

B

D

E

C

Compressed Air

System

The Model H8234 is designed to be oper- ated at 80-110 PSI using clean, dry, regu- lated, compressed air. Do not exceed the 120 PSI maximum operating pres- sure for your model.

Before using your new nailer, regulate the air pressure to find the optimum setting within the specified operating range. Start by testing the nailer at a low setting, then increase the air pressure as needed for satisfactory results.

An in-line filter/lubricator/regulator unit can be installed, as depicted in Figure 2.

This filter/lubricator/regulator unit will protect your tool from damaging water build-up, allow you to adjust and maintain constant air pressure to your tool, and save you the inconvenience of having to manually lubricate your tool every time you use it.

Exceeding the maximum permissible operating pressure may damage the nailer and cause it to malfunction. To protect yourself from personal injury, DO NOT allow the air pressure to exceed the recommended pressure for this nailer!

Check the current Grizzly catalog for avail- ability of this unit. If you plan on install- ing a filter/lubricator/regulator unit in your compressed air system, always follow the connection instructions that come with the unit.

Safety Nose

Mechanism

A safety mechanism (bump fire) on the nose of the nailer protects against acci- dental firing. When the trigger is pressed, the nailer will not fire until the safety nose mechanism is depressed.

Before you use your nailer for the first time, check the safety nose mechanism to ensure proper function.

To check the safety nose mechanism:

1.DISCONNECT NAILER FROM THE

AIR SUPPLY!

2. Make sure the magazine is empty and contains no nails.

3.Make sure the trigger and the safety nose mechanism move up and down without sticking.

4.Connect the nailer to the air supply.

The safety mechanism is a mechanical device that can fail. Never rely on this mechanism as an excuse to point the nailer at yourself or any bystanders. Serious injury may occur.

5.Without pressing the trigger, depress the safety nose mechanism against a scrap piece of wood that is clean and free of any knots, nails, or other foreign objects.

???If the nailer does not fire, then the safety nose mechanism is working correctly.

???If the nailer does fire when you do this, immediately disconnect the nailer from the air supply and call Grizzly Technical Support at (570) 546-9663 for help.

???If the nailer does fire when the trigger is pulled, without the safety nose mechanism being depressed, then the nailer is not working properly.

???If you find that the safety nose mechanism is not depressing properly, check the lubrication of its sliding components.

DO NOT attempt to modify or bypass the safety nose mechanism to make the nailer fire without pushing the safety nose down.

Loading

When replacing nails in your Model H8234, follow these guidelines:

To load your nailer:

1.DISCONNECT NAILER FROM THE

AIR SUPPLY!

2.Grip the nailer firmly, and pull the magazine pusher back until the catch lever engages, as shown in Figure 3.

Pusher

Figure 3. Sliding magazine pusher back and engaging catch lever.

3.Insert a strip of nails, pointed-end down, into the magazine as shown in

Figure 4.

Figure 4. Loading nails into magazine.

4.Tilt the nailer to slide the nails all the way down to the nose.

5.With one hand on the magazine pusher for control, release the magazine catch and slowly allow the pusher to press against the nails.

Operating

If you have not read the safety instruc- tions in this manual, do not operate the nailer.

Before you operate your nailer, place five to six drops of the included oil into the quick connect fitting where the nailer con- nects to the air supply.

To operate your nailer:

1.Connect the air supply to the quick con- nect fitting.

2.To test for proper nail penetration, hold the nailer perpendicular to the surface of a piece of clean scrap wood that is thick enough for the length of nails you have loaded.

3.Depress the safety nose mechanism against your workpiece.

4.Before pulling the trigger, make sure your free hand and other body parts are positioned out of the way of a potential path of a nail in case of deflec- tion.

Deflection is caused when grain irregularities, knots, or foreign objects inside the wood cause the nail to change its path, resulting in the nail puncturing the surface of the workpiece, as shown in Figure 5.

Besides damaging your workpiece, deflection can cause injury if your free hand is securing the workpiece in the location that the nail deflects.

Adjusting Depth

The depth of nail penetration is adjusted with the cap screw that secures the safety nose.

To adjust the depth:

1.DISCONNECT NAILER FROM THE

AIR SUPPLY!

2.Using a 4mm hex wrench, loosen the cap screw shown in Figure 6.

3.Move the safety nose away from the nailer to decrease nail depth, and toward the nailer to increase nail depth.

Figure 5. Example of nail deflection.

5.Pull the trigger.

???If the nail drove into the wood far enough, continue with your intended operations.

???If the nail either went too far or not far enough, then go to the Adjusting Depth section on this page.

Safety Nose

Cap Screw

Figure 6. Loosening cap screw for depth adjustment.

4.Re-tighten the cap screw, then connect the nailer to the air supply and test the nail depth.

5.Repeat Steps 2???4, if necessary, until the nail depth is satisfactory.

Clearing Jammed

Nails

A jammed nail must be cleared before using the nailer again.

To clear a jammed nail from the dis- charge area:

1.DISCONNECT NAILER FROM THE

AIR SUPPLY!

2.Pull back and latch the magazine push- er.

3.Remove the nail stick from the maga- zine.

4.Locate the opening in the underside of the nailer safety nose (see Figure 7).

Nose Opening

Figure 7. Nose opening for clearing a jammed nail.

5.Dislodge the jammed nail with a tool that will fit in the slot on the underside of the nose.

6.Throw the damaged nail away and insert a new nail stick that only contains clean, undamaged nails. DO NOT use dirty or damaged nails!

7.Release the catch lever and slowly let the pusher slide to the front of the magazine.

Replacing Pistons/O-

Rings

Under heavy use, a piston, piston shaft, or O-ring may wear out. Replacement is quick and easy. Contact Grizzly Customer Service at (800) 523-4777 to obtain the Piston Repair Kit (Part Number PH8234092), or the complete O-Ring Repair Kit (Part Number PH8234093).

Always disconnect air from nailer whenever servicing! During mainte- nance, a nailer connected to air may fire accidentally, causing serious per- sonal injury!

To replace a piston:

1.DISCONNECT NAILER FROM THE

AIR SUPPLY!

2.Remove all nails from the magazine cartridge, and clean the exterior of the nailer.

3.Remove the four cap screws on the back of the nailer, near the exhaust port.

4.Remove the cap.

5.The top of the piston should now be visible inside the cylinder, which is housed in the head of the nailer.

6.Watch the discharge area and push the top of the piston with your finger. You will see the piston shaft slide down the discharge area.

7.Taking care not to scratch or dent the nailer parts, use a wooden dowel or similarly shaped tool to push the piston shaft back inside the nailer until you can grip the piston head and remove it from the cylinder. Clean and inspect the parts for cracks, wear, or burrs.

8.Place a new O-ring on the new piston and apply a thin film of the nailer lubri- cating oil on the O-ring.

9.Insert the new piston in the cylinder. Make sure that the grooves on the pis- ton shaft line up with those on the guide at the bottom of the cylinder. The new piston should easily slide into the cyl- inder. DO NOT force the piston into the cylinder! If the piston is not easily inserted, double-check the alignment of the piston shaft with the grooves on the guide.

10.After the piston is inserted correctly, close the magazine. Replace the rear cap assembly and tighten the 4 cap screws.

Note: For more assistance, or to install a complete O-ring set, refer to the appropriate breakdown diagram in the back of this manual for component locations.

H3175???1???4" NPT Female, Quick Coupler

H3176???1???4" NPT Male, Quick Coupler

H3177???1???4" NPT Male, Plug

H3178???1???4" NPT Female, Plug

H3177H3177

Figure 8. 1???4" NPT air fittings.

H3258???Filter/Lube/Regulator 3???8"NPT

H3259???Filter/Lube/Regulator 1???2"NPT

These units are indispensable for prolong- ing the lifespan of your air tools. Filter keeps water/rust out. Lubricator features adjustable automatic lubrication. Regulator allows you to control the optimum PSI delivery for each air tool. Maximum pres- sure for each unit is 150 PSI.

Figure 9. Models H3258 & H3259

FilterLubricator/Regulators.

G2820???Pneumatic Tool Oil 8 oz. G2821???Pneumatic Tool Oil 1 Pint

Use the right oil! This pneumatic tool oil offers outstanding heat displacement and friction reduction without eating away at delicate air components like detergent motor oils. Stock up with extra bottles to avoid costly downtime.

Model H8234??? 28?? Framing Nailer

G8114???3???8" x 25 Ft. Air Hose

G8115???3???8" x 50 Ft. Air Hose

G8116???3???8" x 100 Ft. Air Hose

Multi-purpose red rubber air hose is flex- ible and abrasion resistant. Rated for 200 PSI, this air hose has a bursting strength of 800 PSI 1???4" NPT ends.

Figure 10. Red rubber air hose.

H3275???1???4" x 25' Recoil Air Hose

H3275???1???4" x 50' Recoil Air Hose

These recoil air hoses are ideal for nail- ers and staplers because they are light weight and offer maneuverability in tight places that is unmatched by rubber hoses. Coiled springs protect the ends from kink- ing. (Prices are less than you'll spend on lunch!)

Figure 11. Recoil air hose.

-13-

Use non-flammable solvent to clean the nose assembly of the nailer. Always be sure that the nailer is dry before using it again.

Do not allow dust, chips, sand, etc. into the air connectors or into the body of the nailer; this may result in leaks and damage to the nailer and the air couplings.

Never clean this tool with gasoline or other flammable liquids. Vapors in the tool may ignite, causing the tool to explode. Ignoring this warning may lead to serious personal injury or even death!

Standard pneumatic tool oil has been included with your new Grizzly nailer to help maintain its useful life. Place two to six drops of oil in the nailer air inlet (as shown in Figure 12) before every use, or after 2 hours of continuous use.

Wipe off any excess oil near the nailer exhaust to avoid dust build-up. When the oil that was included with the nailer has been completely used, replace with Grizzly Model G2820 Pneumatic Tool Oil.

Another option to manual oiling would be to install a lubricator in your air compres- sor line. If your air compressor line already has a lubricator, then regular lubrication of your nailer will not be necessary. Just make sure there is always oil in the lubri- cator.

Figure 12. Lubricating nailer via air inlet.

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