MAINTENANCE

Electric tools used on fiberglass material, wallboard, spackling compounds, or plaster are subject to accelerated wear and possible premature failure because the fiberglass chips and grindings are highly abrasive to bearings, brushes, commu- tators, etc. Consequently, we do not recommended using this tool for extended work on these types of materials. However, if you do work with any of these materials, it is extremely important to clean the tool using compressed air.

LUBRICATION

All of the bearings in this tool are lubricated with a sufficient amount of high grade lubricant for the life of the unit under normal operating conditions. Therefore, no further lubrica- tion is required.

REMOVING THE CHUCK

See Figures 12 - 14.

nUnplug the hammer drill.

WARNING:

Failure to unplug the tool could result in accidental start- ing causing possible serious injury.

nOpen the chuck jaws by turning the chuck collar coun- terclockwise.

nInsert a 5/16 in. or larger hex key into the chuck.

nTighten the chuck jaws using the chuck key provided.

nLoosen the chuck screw by tapping the hex key sharply with a mallet in a clockwise direction.

nOpen the chuck jaws and remove the hex key.

n Remove the chuck screw by turning it in a clockwise direction with a screwdriver.

NOTE: The screw has left hand threads.

nReinsert the hex key into the chuck.

nTighten chuck jaws securely using chuck key provided.

nLoosen the chuck by tapping the hex key sharply with a mallet in a counterclockwise direction.

nUnscrew the chuck by hand.

TIGHTENING A LOOSE CHUCK

See Figures 12 - 13.

The chuck may become loose on the spindle and begin to shake when using the drill. Also, the chuck screw may become loose, causing the chuck jaws to bind and prevent them from closing. To tighten the chuck:

n Unplug the hammer drill.

nOpen the chuck jaws by turning the chuck collar coun- terclockwise.

nInsert a 5/16 in. or larger hex key into the chuck.

nTighten the chuck jaws using the chuck key provided.

MALLET

CHUCK

JAWS

CHUCK

HEX KEY

Fig. 12

SCREWDRIVER

Fig. 13

MALLET

HEX KEY

CHUCK JAWS

CHUCK

Fig. 14

nTap the hex key sharply with a mallet in a clockwise direction to tighten the chuck on the spindle.

nOpen the chuck jaws and remove the hex key.

nTighten the chuck screw by turning it in a counterclock- wise direction with a screwdriver.

NOTE: The screw has left hand threads.

15

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Image 15
Ryobi D551H manual Lubrication, Removing the Chuck, Tightening a Loose Chuck

D551H specifications

The Ryobi D551H is a highly regarded pneumatic nailer designed for both professionals and DIY enthusiasts. This tool stands out due to its powerful capabilities and thoughtful features, making it an essential addition to any woodworking toolkit.

One of the key features of the Ryobi D551H is its ability to drive a range of fasteners with exceptional precision. This nailer accommodates 16-gauge finishing nails, delivering the power necessary for securing trim, molding, and other intricate woodworking applications. The tool’s depth adjustment feature allows users to customize the depth of each nail, ensuring a clean and professional finish every time.

The Ryobi D551H also boasts a powerful motor that drives nails quickly and consistently. This pneumatic design is effective for high-volume jobs, reducing fatigue and time spent on the job site. Its lightweight construction enhances portability, making it easy to maneuver in tight spaces and ideal for long periods of use.

Another notable technology in the D551H is its built-in oil-free design. This eliminates the need for regular maintenance associated with oil-based nailers, allowing users to focus more on their projects rather than upkeep. Additionally, the tool features an adjustable exhaust that directs air away from the user, keeping the workspace clean and comfortable.

Safety is a priority in the design of the Ryobi D551H. The tool includes a trigger lock that prevents accidental firing, ensuring that users can work confidently and securely. Combined with a no-mar tip that protects surfaces from damage, this nailer prioritizes the safety and quality of the user experience.

Moreover, the magazine capacity of the D551H allows for numerous fasteners to be loaded at once, reducing the frequency of reloading during extended use. This feature significantly increases efficiency, particularly in demanding work environments.

The Ryobi D551H is also compatible with a variety of accessories and attachments, enhancing its versatility. Whether users are tackling a home improvement project or engaging in professional construction tasks, the D551H is engineered to meet diverse demands with ease and reliability.

In summary, the Ryobi D551H delivers a powerful, user-friendly experience with its impressive features, advanced technologies, and commitment to safety. Ideal for both seasoned professionals and those new to woodworking, this pneumatic nailer is a robust tool designed to simplify tasks and enhance productivity on any project.