Exam 25: Steering and Alignment

A truck is placed on alignment turntables with the wheels in the straight ahead position.After removing the pins and zeroing the protractor scales,the wheels are turned all the way left until they contact the turn stop.How will the protractor scale read?

Technician A says that many of today's unitized steering axles are designed to run maintenance-free for the life of the axle.Technician B says that many types of unitized steering axles are lubed for life with synthetic grease and never require additional lube.Who is correct?

Technician A says that to adjust steering toe,one of the crosstube tie-rod ends must be removed from an Ackerman arm so that it can be rotated.Technician B says that a tie-rod crosstube has left-hand threads on one side,and right-hand threads on the other.Who is correct?

When a truck equipped with radial steering tires specifies a toe-in,which of the following specifications is more likely?

Technician A says that objective of a toe specification in commercial truck steering systems is achieve zero toe when the truck is fully loaded and running at highway speeds.Technician B says that when setting toe on the shop floor on a truck equipped with radial tires,it is common to set it either at zero or with a fractional toe-in.Who is correct?

Technician A says that a Pitman arm is usually timed to a sector shaft by means of center alignment marks.Technician B says that to center an off-center steering wheel,set the steering tires in the straight-ahead position,remove the Pitman arm,center the steering wheel,then reconnect the Pitman arm.Who is correct?

Which of the following best describes how a Pitman shaft connects to the output or sector shaft of a steering gear?

When using a light beam alignment system to check axle tracking on a highway semi-trailer,how should the kingpin flag assembly be mounted to the trailer?

When troubleshooting a hard steering problem on a highway tractor that occurs only when towing a loaded trailer,which of the following should be checked out first?

What is used to retain a straight kingpin in a steering knuckle assembly?

When the front tires of a truck both lean outward slightly at the top,which of the following is indicated?

Technician A says that manual steering gear should be filled with a 75W gear oil for operations in northern winter conditions.Technician B says that use of 90W gear oil in a manual steering gear can produce hard steering in certain conditions.Who is correct?

Higher than specified toe-in can cause which of the following tire wear patterns?

Which of the following is required in a power steering analyzer?

Technician A says that when computer-controlled,electronically variable steering (EVS)is used on current trucks,it must have a full redundancy to mechanical operation.Technician B says that an advantage of EVS is that hydraulic-assist pressure can be managed independently from engine speed.Who is correct?

If a power steering gear shifts position on its mounting point on the frame,which of the following can be affected?

When checking out the front end geometry of a heavy duty truck,which of the following steps should be performed FIRST?

If you increase the length of a tie rod on a typical heavy-duty truck steering system,what happens to the toe setting?

Which of the following components defines steering toe-out on turns?

How is should steering knuckle vertical clearance be adjusted?