STEERING AND SUSPENSION FINAL EXAM QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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Course
GXMO
Institution
GXMO
STEERING AND SUSPENSION FINAL EXAM QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
Technician A says that when the kingpin on a trailer upper coupler wears out, it should be replaced. Technician B says that some OEMs recommend a new repair welding technique to recondition a kingpin rather than rebuild t...
STEERING AND SUSPENSION FINAL EXAM
QUESTIONS AND ANSWERS WITH
SOLUTIONS 2024
Technician A says that when the kingpin on a trailer upper coupler wears out, it should be replaced.
Technician B says that some OEMs recommend a new repair welding technique to recondition a kingpin
rather than rebuild the upper coupler. Who is correct?
a. Technician A only
b. Technician B only
c. Both A and B
d. Neither A nor B - ANSWER Technician A only
Which of the following is the preferred method of attaching a fifth-wheel base plate to a truck frame?
a. bolt angle iron sections to the frame rails and weld 5th wheel base plate to the angle iron sections
b. MIG weld base plate to rail flanges
c. bolt base plate to the rail flanges
d. weld 5th wheel base plate directly to the frame using AWS E-7018 electrodes or MIG equivalent -
ANSWER bolt angle iron sections to the frame rails and weld 5th wheel base plate to the angle iron
sections
Which type of 5th wheel is designed to articulate on all planes?
a. semi-oscillating
b. fully-oscillating
c. sliding
d. compensating - ANSWER fully-oscillating
Which of the following types of fifth wheels is capable of altering the weight over the tractor rear axles?
,a. no-slack, semi-oscillating
b. semi-oscillating
c. sliding
d. compensating - ANSWER sliding
Technician A says that an upper coupler kingpin template is used to verify that a kingpin is in satisfactory
condition. Technician B says that a kingpin plug is used both when testing and reassembling 5th wheels.
Who is correct?
a. Technician A only
b. Both A and B
c. Technician B only
d. Neither A nor B - ANSWER Both A and B
Which of the following lubricants should be used to grease a fifth wheel?
a. water-resistant lithium-base grease
b. 80/90 gear lube
c. any type of axle grease
d. 85/140 axle lube - ANSWER water-resistant lithium-base grease
What is the maximum hook to latch clearance permitted on highway pintle hook assembly?
a. 3/8 inch (10 mm)
b. 1-inch (25 mm)
c. 3/4 inch (19 mm)
d. 1/2 inch (12.5 mm) - ANSWER a. 3/8 inch (10 mm)
Before uncoupling a tractor from a semi-trailer, which of the following should be done?
, a. apply the trailer service brakes
b. ensure the trailer parking brakes are released
c. lower the trailer dolly legs and raise to take some weight off the tractor
d. ensure the 5th wheel main and secondary locks are both fully engaged - ANSWER lower the trailer
dolly legs and raise to take some weight of the tractor
How are most current kingpins attached to the upper coupler assembly?
a. rivets
b. welding
c. SAE Grade 5 bolts
d. SAE Grade 8 bolts - ANSWER welding
If a rigid 5th wheel is used on a tractor, to which of the following applications would it likely be coupled
to?
a. high rigidity tanker monocoque
b. C-train lead trailer
c. low bed gooseneck
d. frameless dump with oscillating bolster plate - ANSWER frameless dump with oscillating bolster plate
When a sliding fifth wheel is used on a tractor, which position would most likely provide the driver with
the most comfortable ride?
a. slightly behind of the bogie centerline
b. full travel forward
c. over the bogie centerline
d. full travel rearward - ANSWER over the bogie centerline
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