CAL CAL - Certified Automotive Locksmith Lock Cylinder Service and Rekeying Questions and Answers 2

Question 1

Which automotive lock component links the lock cylinder rotation to the actual locking/unlocking mechanism inside the door?

Accepted Answer

The actuator rod or connecting rod

Answer

The actuator rod connects the rotating cylinder to the door's latch mechanism, translating cylinder rotation into a lock or unlock action.

Question 2

When an automotive lock cylinder is 'seized' and will not turn, what is the first recommended diagnostic step before attempting disassembly?

Accepted Answer

Apply an appropriate lubricant such as dry graphite or Teflon spray and attempt to work the cylinder with a key

Answer

Lubricating with a dry graphite or Teflon-based product and gently working the cylinder often resolves a seized lock without requiring destructive entry or full replacement.

Question 3

What is the purpose of the 'sidebar' found in some high-security automotive lock cylinders?

Accepted Answer

It provides a secondary locking mechanism that must be satisfied in addition to standard tumblers, preventing picking and bumping

Answer

A sidebar is a secondary locking element that engages when the correct key is inserted, providing an additional layer of security beyond standard tumbler alignment.

Question 4

When measuring the depths of a cut on a decoded automotive key, a locksmith uses which tool?

Accepted Answer

A key gauge or digital calipers referenced against the manufacturer's depth chart

Answer

A key gauge or digital calipers, compared against the manufacturer's bitting depth chart, accurately measures each cut position on a key.

Question 5

Which problem causes an automotive lock cylinder to turn but fail to operate the latch or ignition switch?

Accepted Answer

A broken or disconnected actuator rod

Answer

If the actuator rod is broken or disconnected, cylinder rotation cannot transfer to the latch or switch, so the cylinder turns freely without effect.

(CAL) Certified Automotive Locksmith Practice Test

(CAL) Certified Automotive Locksmith Practice Test

CAL CAL - Certified Automotive Locksmith Lock Cylinder Service and Rekeying Questions and Answers 2