All of the following tire wear condition are considered abnormal EXCEPT:
A. tread river erosion
B. Excessive Toe-in wear
C. Excessive toe-out wear
D. Excessive shoulder wear - ANSWER-5. Tread river erosion
The LEAST LIKELY cause of premature suspension bushing wear is:
A. A broken leaf spring center bolt
B. Excessive rear axle castor
C. Excessive wear to adjacent suspension components
D. Loose U-bolts - ANSWER-B. Excessive rear axle castor
While adjusting front wheel camber:
A. If the front wheel has a positive camber angle, the camber line is tilted inward from
the true vertical centerline of the wheel and tire
B. Excessive positive camber on the front wheel causes premature tire wear on the
inside tread of the tire
C. Excessive negative camber on a front wheel causes premature wear on the outside
of the tire tread
D. Improper camber angle on an I-beam front suspension may be caused by a bent axle
or spindle - ANSWER-D. Improper camber angle on an I-beam front suspension may be
caused by a bent axle or spindle
A vehicle with power steering has a high turning effort at idle. At any other RPM, it
operates normally. What is the LEAST LIKELY cause of this condition?
A. A sticking rotary valve
B. Excessive wear between the vanes and rotor of the power steering pump assembly
, C. A sticking flow control valve
D. An obstruction or kink in the fluid return line - ANSWER-A. A sticking rotary valve
While diagnosing KPI and front spindle movement:
A. When the steering wheel is turned, the front spindle movement is parallel to the road
surface
B. The KPI angle has no effect on steering wheel returning force
C. The KPI angle tends to maintain the wheel in a straight-ahead position
D. An increase in the KPI angle decreases steering effort - ANSWER-C. The KPI angle
tends to maintain the wheel in a straight-ahead position
An equalizing-beam suspension may also be referred to as:
A. A torsion bar
B. A walking beam
C. An air spring
D. A multi-leaf variable rate - ANSWER-B. A walking beam
A driver complains that his tractor bottoms out when hitting a bump. The LEAST LIKELY
cause would be:
A. Excessive weight on the vehicle
B. One or more broken leaves in the spring leak
C. Weak or fatigued spring assembly
D. Broken or missing rebound clips - ANSWER-D. Broken or missing rebound clips
What is the established industry torque specification for wheel nuts?
A. 400-450 ft-lbs
B. 350-400 ft-lbs
C. 450-500 ft-lbs
D. 550-600 ft-lbs - ANSWER-C. 450-500 ft-lbs
While discussing turning radius:
A. The turning radius is affected by the length of the tie rod
B. The turning radius is determined by the steering arm design
C. Improper turning radius has no effect on tire tread wear
D. During a turn, the inside tire is actually behind the outside tire - ANSWER-B. The
turning radius is determined by the steering arm design
Technician A says noise from a manual steering gear might be caused by misalignment
of the steering column input shaft. Technician B says that noise coming from the
manual steering gear assembly of a linkage-assist-type power steering when turning the
steering wheel may be caused by ow lubricant level. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B - ANSWER-C. Both A and B
When using the dial indicator for checking the upper and lower kingpin bushing wear on
both conventional and unitized wheel end axles, if the upper bushing is worn or
damaged what do you replace?
A. One bushing in the knuckle
B. The entire axle
C. Both bushings in the knuckle
D. The steering knuckle - ANSWER-C. Both bushings in the knuckle
A. tread river erosion
B. Excessive Toe-in wear
C. Excessive toe-out wear
D. Excessive shoulder wear - ANSWER-5. Tread river erosion
The LEAST LIKELY cause of premature suspension bushing wear is:
A. A broken leaf spring center bolt
B. Excessive rear axle castor
C. Excessive wear to adjacent suspension components
D. Loose U-bolts - ANSWER-B. Excessive rear axle castor
While adjusting front wheel camber:
A. If the front wheel has a positive camber angle, the camber line is tilted inward from
the true vertical centerline of the wheel and tire
B. Excessive positive camber on the front wheel causes premature tire wear on the
inside tread of the tire
C. Excessive negative camber on a front wheel causes premature wear on the outside
of the tire tread
D. Improper camber angle on an I-beam front suspension may be caused by a bent axle
or spindle - ANSWER-D. Improper camber angle on an I-beam front suspension may be
caused by a bent axle or spindle
A vehicle with power steering has a high turning effort at idle. At any other RPM, it
operates normally. What is the LEAST LIKELY cause of this condition?
A. A sticking rotary valve
B. Excessive wear between the vanes and rotor of the power steering pump assembly
, C. A sticking flow control valve
D. An obstruction or kink in the fluid return line - ANSWER-A. A sticking rotary valve
While diagnosing KPI and front spindle movement:
A. When the steering wheel is turned, the front spindle movement is parallel to the road
surface
B. The KPI angle has no effect on steering wheel returning force
C. The KPI angle tends to maintain the wheel in a straight-ahead position
D. An increase in the KPI angle decreases steering effort - ANSWER-C. The KPI angle
tends to maintain the wheel in a straight-ahead position
An equalizing-beam suspension may also be referred to as:
A. A torsion bar
B. A walking beam
C. An air spring
D. A multi-leaf variable rate - ANSWER-B. A walking beam
A driver complains that his tractor bottoms out when hitting a bump. The LEAST LIKELY
cause would be:
A. Excessive weight on the vehicle
B. One or more broken leaves in the spring leak
C. Weak or fatigued spring assembly
D. Broken or missing rebound clips - ANSWER-D. Broken or missing rebound clips
What is the established industry torque specification for wheel nuts?
A. 400-450 ft-lbs
B. 350-400 ft-lbs
C. 450-500 ft-lbs
D. 550-600 ft-lbs - ANSWER-C. 450-500 ft-lbs
While discussing turning radius:
A. The turning radius is affected by the length of the tie rod
B. The turning radius is determined by the steering arm design
C. Improper turning radius has no effect on tire tread wear
D. During a turn, the inside tire is actually behind the outside tire - ANSWER-B. The
turning radius is determined by the steering arm design
Technician A says noise from a manual steering gear might be caused by misalignment
of the steering column input shaft. Technician B says that noise coming from the
manual steering gear assembly of a linkage-assist-type power steering when turning the
steering wheel may be caused by ow lubricant level. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B - ANSWER-C. Both A and B
When using the dial indicator for checking the upper and lower kingpin bushing wear on
both conventional and unitized wheel end axles, if the upper bushing is worn or
damaged what do you replace?
A. One bushing in the knuckle
B. The entire axle
C. Both bushings in the knuckle
D. The steering knuckle - ANSWER-C. Both bushings in the knuckle
