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50 Cards in this Set
- Front
- Back
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The point at which the maximum force is concentrated on a frame is called the |
Maximum bending moment |
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Which of the following is a function of a vehicle frame |
Provide a platform Support the load Resist shock and torsional loads |
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The two long main components of the chassis frame are called the |
Rails |
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The part of the frame that should not be cut, drilled or welded to is called the |
Flange |
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The highest stress a material can stand without permanent deformation or damage is its |
Yield strength |
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What type of suspension is the best suited for vehicles that have a high centre of gravity and operate on extremely rugged terrain off road |
Solid mount |
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Which of the following is an example of unsprung weight |
Brake drum |
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What device is used to absorb energy and prevent suspension oscillation |
Shock absorber |
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A leaf type spring suspension that has a variable deflection rate obtained by varying the effective length of the spring assembly is known as an |
Progressive spring suspension |
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Which device is used on spring suspension of a drive axle to stabilize the spring against the torque created by acceleration and braking and also provide an axle alignment adjustment |
Longitudinal torque rod |
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The major advantage that air spring suspension have over other suspension types is that they provide superior |
Ride quality |
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The ride height control valve supplies air to the air springs when |
Additional load is added to the vehicle |
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What condition exists on a ladder type frame when one frame rail moves ahead of the other but remains parallel |
Frame diamond |
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The best way to remove equalizer beam end and centre bushings is to |
Use appropriate presses and pullers |
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Drivers must drain air reservoirs at least daily in order to ensure that the |
Moisture and contamination in the reservoirs will be removed |
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When the load is removed from a vehicle equipped with air spring suspension, the ride height control valve will |
Exhaust air from the air spring until the correct ride height is reached |
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One possible cause for frame side sway is |
An accident, collision or rollover |
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Corrosion of frame material can be a result of |
Climate conditions Exposure to certain cargo materials Contact between two dissimilar metals |
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One advantage of using a huck fastener for attaching frame components is they |
Do not allow flexing of the frame components |
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When marking a frame rail, you should use |
Chalk or soapstone |
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Aluminastic is used on surfaces of aluminum suspension components that contact other metals |
Prevent corrosion reactions |
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A vehicle equipped with a leaf suspension is leaning to one side. A possible cause could be |
A broken leaf spring |
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An advantage that air spring suspension have over other suspension types is that they provide superior |
Ride quality |
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The difference between bar pin and other types of equalizer beam end bushings is that |
They provide a point of axle alignment adjustment |
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Technician A states that high strength, low alloy steel is the strongest frame on the market, technician B says that heat-treated alloy steel is the strongest. Who is correct |
Technician B |
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Axial loads may be offset by |
Helical splines |
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Crush is a term used to describe the |
Distortion given to a bearing shell |
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Needle bearings are |
Most often used where space is limited |
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Which one is not an anti-friction bearing |
High contact area between moving parts |
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What is a static seal |
They seal between non moving parts |
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What best describes gaskets |
Metal gaskets can usually withstand higher pressures and temperatures |
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Which beat describes face seals |
There is little or no wear on the moving shaft |
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What is preload |
Preload is set by shims, spacers or a threaded ring |
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Brinelling is |
Indentations from shock loading |
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Bearing failure is most often aided by |
Contamination ingested from external sources |
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When removing bearings from a shaft using the non-destructive method |
Ensure the bearing is supported as close to the shaft as possible |
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What is arcing across the bearing |
Marks in the bearing due to discharge of electricity within the bearing |
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When using silicone with gaskets |
Use silicone alone, without gasket |
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When heating bearings do not use |
A flame |
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Bearings should not be heated above |
250 degrees F |
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The two basic types of bearings are |
Friction and non-friction |
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Bearings are not designed to |
Increase friction |
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Sealed bearings should not be heated over |
80 degrees C |
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Silicone can be used instead of an O-ring |
False |
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Describe anti-friction bearing |
Designed to absorb contamination loads |
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All bearing require lubrication |
True |
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Bearing fatigue is not caused by |
Operating at temperatures below 150 degrees C |
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Bearing creep does not lessen brinelling |
False |
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Spalling is result of |
Heavy preload |
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Peeling is a result of incorrect ground placement when welding |
False |
