Hand Tools, Power Tools & Guards
- Inspect tools and identify defects requiring removal from service.
- Select compatible tools, accessories, and guards for the task.
- Control workpiece hazards and verify final tightening correctly.
- Inspection flashlight — Illuminate handles, housings, cords, plugs, fittings, switches, and guards during inspection.
- Impact wrench with impact-rated sockets — Perform suitable fastening work without substituting ordinary hand sockets or treating impact operation as torque verification.
- Guarded angle grinder — Grind with a compatible, inspected accessory whose permitted speed meets the tool's operating speed requirement.
- Vise or work clamp — Secure the workpiece during drilling or grinding and keep hands away from the cutting path.
- Torque wrench — Complete and verify tightening when appropriate to the specified method, using a tool within its required calibration interval.
Inspect handles, housings, cords, plugs, air fittings, switches, and guards before using a tool. Cracked handles, exposed conductors, damaged fittings, missing guards, or a switch that sticks require the tool to be removed from service and identified so others do not use it.
Match the tool and accessory to the job, including socket type, accessory size, arbor fit, material compatibility, and speed rating. Use impact-rated sockets on impact tools, and never substitute an ordinary hand socket because it happens to fit.
An abrasive wheel or other rotating accessory must have a maximum permitted speed at least as high as the tool's maximum operating speed. Follow the wheel and tool manufacturers' inspection and mounting instructions; do not use a cracked wheel, force an incorrect fit, or remove a required guard.
Secure the workpiece with an appropriate vise or clamp rather than holding it in a hand while drilling or grinding. Keep hands out of the cutting path, direct sparks away from people and combustibles, and disconnect the tool from its power source before changing accessories.
Stop a tool that develops unusual vibration, noise, heat, or loss of control, and inspect it before further use. An impact tool is not proof of final fastener torque; when a procedure specifies torque, complete and verify tightening with the specified method and a suitable torque tool within its required calibration interval.
How It Works
Inspection and removal from service
Inspect handles, housings, cords, plugs, air fittings, switches, and guards before use; remove and identify tools with cracked handles, exposed conductors, damaged fittings, missing guards, or sticking switches. These defects can compromise grip, expose the operator to electrical or pressure hazards, or prevent reliable control. Stop a tool that develops unusual vibration, noise, heat, or loss of control and inspect it before further use.
Accessory compatibility and containment
Match socket type, accessory size, arbor fit, material compatibility, and speed rating to the job; use impact-rated sockets on impact tools. A rotating accessory's maximum permitted speed must equal or exceed the tool's maximum operating speed because excessive rotational loading can cause accessory failure. Follow the manufacturers' inspection and mounting instructions, reject cracked wheels, never force an incorrect fit, and retain required guards.
Work control and verified tightening
Secure the workpiece with a vise or clamp, keep hands out of the cutting path, direct sparks away from people and combustibles, and disconnect power before changing accessories. Clamping resists cutting reaction forces that can spin or pull a handheld workpiece into the tool. Impact operation does not establish final fastener torque; obtain the value and method from component service information and verify tightening with a suitable torque tool within its required calibration interval.
Tool Selection Checks
| Rotating accessory speed | Accessory maximum permitted speed must equal or exceed the tool's maximum operating speed. |
| Impact sockets | Use sockets rated for impact service. |
| Final fastener torque | Obtain the value and tightening method from the applicable component service information; do not infer them from impact-tool operation. |
Diagnostic Chart
| Symptom | Check | Spec / Expected | Likely cause & fix |
|---|---|---|---|
| Pre-use inspection finds a cracked handle, exposed conductor, damaged fitting, missing guard, or sticking switch. | Inspect the tool without operating it; remove it from service and identify it so others do not use it. | Inspect handles, housings, cords, plugs, air fittings, switches, and guards before using a tool. | Damage or a defective control makes continued operation unsafe. Basis: General shop practice (not from a downloaded manual) |
| A rotating accessory appears unsuitable or its speed compatibility is uncertain. | Compare accessory and tool speed markings, confirm size, arbor fit, and material compatibility, and follow manufacturer inspection and mounting instructions. | Accessory maximum permitted speed must equal or exceed the tool's maximum operating speed. | The accessory may be incorrectly selected, cracked, or incompatible with the mounting arrangement. Basis: General shop practice (not from a downloaded manual) |
| The tool develops unusual vibration, noise, heat, or loss of control. | Stop the tool and inspect it before further use; disconnect its power source before changing an accessory. | Stop a tool that develops unusual vibration, noise, heat, or loss of control, and inspect it before further use. | A tool, accessory, or setup fault may be present; the symptom alone does not establish the cause. Basis: General shop practice (not from a downloaded manual) |
| A fastener has been tightened with an impact tool but final torque is unverified. | Obtain the applicable component service information and complete and verify tightening using the specified method and a suitable torque tool within its required calibration interval. | Obtain the value and tightening method from the applicable component service information; do not infer them from impact-tool operation. | Impact-tool operation was mistaken for proof of final fastener torque. Basis: General shop practice (not from a downloaded manual) |
At the Bay: Diagnose the Case
CASE 1 / 4
Pre-use inspection finds a cracked handle, exposed conductor, damaged fitting, missing guard, or sticking switch.
- Test
- Compare
- Correct
Select the next check
Basis: General shop practice (not from a downloaded manual). A likely cause is a hypothesis; confirm it with the applicable service procedure before repair.
Common Bay Mistakes
- ✕ Using an ordinary hand socket on an impact tool because it fits.
- ✕ Forcing an accessory onto an incompatible arbor.
- ✕ Removing a required guard to gain access.
- ✕ Holding the workpiece by hand while drilling or grinding.
Quick Check
Practice only — not scored.
Source: General shop practice (not from a downloaded manual)