PLIERS

Slip-Joint Pliers  Pliers are capable of holding, twisting, bending, and cutting. They are an extremely useful classification of tools. 

Common household pliers are called slip-joint pliers.

Typical slip-joint pliers, which are also common household pliers. The slip joint allows the jaws to be opened to two different settings.

There are two different positions where the junction of the handles meet to achieve a range of sizes of objects that can be gripped.

MultiGroove Adjustable Pliers  For gripping larger objects, using a set of multigroove adjustable pliers is common. Originally designed to remove various size nuts holding rope seals used in water pumps, the name water pump pliers is also used.

Multigroove adjustable pliers are known by many names, including the trade name “Channel Locks.”

Linesman’s Pliers  Are specifically designed for cutting, bending, and twisting wire. While commonly used by construction workers and electricians, they are very useful tools for the service tech who deals with wiring.

The center parts of

the jaws are designed to grasp round objects

such as pipe or tubing

without slipping.

A linesman’s pliers are very useful because they can help perform many automotive service jobs.

Diagonal Pliers Are designed for cutting only. The jaws are set at an angle to make it easier to cut wires. Diagonal pliers are also called side cut or dike.

Diagonal-cut pliers are another common tool that has many names.

Needle-Nose Pliers  Designed to grip small objects or those in tight locations, needle-nose pliers have long, pointed jaws.

Needle- nose pliers are used where there is limited access to a wire or pin that needs installed or removed.

Most have a wire cutter located at the base near the pivot. There are several variations. including right angle or slightly angled jaws to allow access to cramped areas.

Locking Pliers  Are adjustable pliers that can be locked to hold objects from moving. Most have wire cutters near the pivot point.

The size is the length of the pliers, not how far the jaws open.

Locking pliers are best known by their trade name VISE GRIPS  .

Safe Use of Pliers  Pliers should not be used to remove any bolt or other fastener. They should only be used when specified by the vehicle manufacturer.

Brand Name versus Proper Name

Technicians often use slang or brand names of tools rather than the proper term. This results in some confusion for new technicians. Some examples are given in the following table.   

Brand Name :

• Crescent wrench 
• Vise Grips
• Channel Locks

Proper Term :

• Adjustable wrench
• Locking pliers
• Water pump pliers
• or multigroove
• adjustable pliers
• Diagonal cutting
• pliers 

Slang Name :

• Monkey wrench
• Pump pliers
• Dikes or side cuts