EMCC ATA 126 Exam Questions and Correct Answers

EMCC ATA 126 Exam Questions and Correct Answers True/false: the wormand roller steering components are basically the same found in the recicrulating ball/parallelogram system - ANSWER true parallelogram steering arangements typically use a rack and pinion mechanism - ANSWER false rack and pinion preload can be adjusted by setting the yoke lash - ANSWER true all steering collums have a collapsiable collum starting in what year - ANSWER 1968 tire wear patterns are good indicators of steering and suspension problems - ANSWER true worn tie rod ends can result in - ANSWER scalloped and scuffed tires, tire squeal on turns, wheel shimmy in a rack and pinion steering system, what protects the rack from contamination - ANSWER the bellows boots which is not a cause of wheel shimmy - ANSWER binding ujoints which of the following is a 4ws production design - ANSWER mechanical, hyraulic, electro/hydraulic tech a says worn tie rod ends are the probable cause of wheel shimmy, tech b says shimmy could be caused by a loose power steering belt - ANSWER A tech a says adjusting the steering gear too tightly can cause hard steering, tech b says adjusting the steering gear to tightly can cause poor returnability/ who is correct? - ANSWER C quadrasteer steering systems are being discussed. tech a says at low speeds the rear wheels turn in the same direction as the front wheels. tech b says at high speeds the rear wheels turn in the direction opposite to the front wheels. who is correct? - ANSWER D power steering systems are being discussed. tech a says an integral systems has the power cylinder and the control valve located inside the same housing as the steering gear. tech b says an external piston linkage system has the power cylinder and control valve located externally between the center llink and the frame. who is correct? - ANSWER C Rack and pinion : tech a says they require two outer tie rod ends. tech b says the do not require inner tie rods - ANSWER A the function of the balls in a recicrulating ball type steering gear is to - ANSWER reduce friction between the worm shaft and ball nut power steering hoses must be able to withstand pressures up to _ psi - ANSWER 1500 the power steering pressure on an electronically controlled power steering system is regulated by the ehicles computer by varing the _ applied to the pressure control solenoid - ANSWER Duty Cycle Active steering: tech a says active steering improves vehicle stability by turning the wheels more or less sharply than commanded by the steering wheel. tech b says the system allows for a variable steering ratio dependent on vehicle speed. who is correct? - ANSWER Both