How often should the calibration of a micrometer be checked?
Before every use
List some common uses of the dial indicator.
- brake rotor
- valve lift
- flywheel
What determines the size of a wrench?
The size of the fastener, bolt or nut
True or False? The same information available in service manuals and bulletins is also available electronically through electronic service programs and the Internet.
True
Describe the grading methods for both imperial and metric bolts.
- Metric is number identification (2 digits), thread is in mm
- Imperial is identified by lines on the top of the bolt - add 2, thread is measured in TPI threads per inch
Which of the following wrenches is the best choice for turning a bolt?
* open end
* box end
* combination
* line
box end
How many graduations are found on the thimble of a metric micrometer?
100
What does each thimble graduation on a metric micrometer equal?
* one-tenth of a millimetre
* one-hundredth of a millimetre
* one-thousandth of a millimetre
* one-ten-thousandth of a millimetre
- one-hundredth of a millimetre
Which of the following screwdrivers is like a Phillips but has a flatter and blunter tip?
* standard
* Torx®
* Pozidriv®
* clutch head
- Pozidriv®
Which of the following types of pliers is best for grasping small parts?
* adjustable
* needle nose
* retaining ring
* snap-ring
- needle nose
What tool should be used to drive a roll pin from an aluminum component?
* centre punch
* brass drift
* tapered punch
* diamond point chisel
- brass drift
What is an extractor designed to remove?
* worn seals
* worn bushings
* pistons
* broken bolts
- broken bolts
What tool should be used to measure a valve guide bore? (Level 2 question)
* a ball gauge
* a telescoping gauge
* an inside micrometer
* a vernier caliper
- a ball gauge
What tool should be used when the measurement must be within one-hundredth of a millimetre?
* a machinist’s rule
* a vernier caliper
* a micrometer
* a dial caliper
- a micrometer
What type of bolt damage could cause a bolt head to pop off?
* shank damage
* damaged threads
* rounded head hex corners
* fillet damage
- fillet damage
What tool can be used to measure inside, outside, and depth measurements?
* a micrometer
* a dial indicator
* a vernier caliper
* a telescoping gauge
- a vernier caliper
When using a hydraulic vehicle lift, what should be done before working under the vehicle?
* Make sure the trouble light is working.
* Make sure the lift’s locking devices are fully engaged.
* Release all power supplies to the lift.
* Select all the tools required to perform the repair.
- Make sure the lift’s locking devices are fully engaged.
What do the vehicle manufacturers publish when new service procedures or component updates are needed?
* service manuals
* specialty repair manuals
* technical service bulletins
* owner’s manuals
- technical service bulletins
What role do units of measurement play in repairing modern automobiles?
They are crucial for tool selection
What must measuring tools be able to do?
Measure objects to a high degree of precision
What is a micrometer used for?
To measure the outside diameter of shafts
What does a thread pitch gauge provide?
A fast and accurate method of measuring the distance between threads
Why is it crucial to use the proper amount of torque when tightening nuts or cap screws?
To duplicate the conditions of tightness and stress recommended by the manufacturer
Are metric and SAE size wrenches interchangeable?
No
