MLR service and repair

A broken bolt must be replaced. Technician A says that thread pitch is the same as thread coarseness. Technician B says that bolt head markings specify the tensile strength of a bolt. Who is correct?

• A only

• B only

• Both A and B

• Neither A nor B

Which of the following is a safety device that keeps a slotted nut from turning or coming off?

• Lock tab

• Snap ring

• Cotter pin

• Thread pitch

Snap rings hold and fit into grooves in:

• Pins

• Gears

• Shafts

• All the above

Set screws are headless fasteners designed to accept a(n)

• Hex wrench

• Screwdriver

• Allen wrench

• All the above

Which of the following is determined by measuring bolt length change while torquing a bolt?

• Torque stretch

• Torque to yield

• Torquing sequence

• Torque specifications

Fastener tightening generally follows a

• Clockwise pattern

• Crisscross pattern

• Left-to-right pattern

• Counterclockwise pattern

Which of the following is not a basic rule to follow when using a torque wrench?

• Avoid using swivel joints

• Pull only on the wrench handle

• Clean fastener threads

• Use short jerky pull motions for accuracy

Which threaded tool is used for cutting internal threads in holes?

• Tap

• Heilcoil

• Thread chaser

• Thread repair insert

Each of the following is a tool that can be used to help remove problem fasteners except:

• Hacksaw

• Stud puller

• Die

• Screwdriver

While installing gaskets, Technician A believes gaskets alone will produce leakproof seals. Technician B believes that some gaskets require sealer to further prevent leakage where gaskets overlap. Who is right?

• A only

• B only

• Both A and B

• Neither A nor B