A3 Manual Drive
Train & Axles
A manual transmission leaks lubricant inside the bellhousing after a clutch job. Which of these could be the cause?
A rear axle whines on coast after a ring and pinion replacement. Ring gear backlash measures 0.017 inch against a specification of 0.005 to 0.012 inch. Which of these could be the cause?
A clutch slips only under heavy throttle in fourth and fifth gear. What is the MOST likely cause?
A transfer case is being refilled. Technician A says transfer cases use the same lubricant as the rear axle. Technician B says the fluid level should be checked with the vehicle raised on one side. Who is right?
The slip yoke on a rear-wheel drive shaft is used to:
A manual transaxle grinds going into reverse. Any of these could be the cause EXCEPT:
When a new collapsible spacer is installed during pinion setup, the technician should:
A four-wheel drive vehicle has a clicking noise from the right front that appears only when 4WD is engaged and the vehicle is turning. Which of these could be the cause?
A manual transmission clashes going into third gear at all speeds. These readings were taken during teardown. Which measurement is out of specification?
| Measurement | Reading | Specification |
|---|---|---|
| Mainshaft endplay | 0.008 in. | 0.004–0.012 in. |
| Third gear ring clearance | 0.014 in. | 0.030 in. minimum |
| Countershaft endplay | 0.006 in. | 0.002–0.010 in. |
| Reverse idler shaft end clearance | 0.003 in. | 0.006 in. maximum |
A manual transaxle differential is being rebuilt. Technician A says side gear thrust washer thickness controls side gear backlash. Technician B says the pinion shaft roll pin should be replaced during reassembly. Who is right?
A vehicle with a limited-slip rear axle spins one wheel on wet pavement while the other stays still. What is the MOST likely cause?
A rear-wheel drive vehicle clunks when the driver moves from a stop and again when lifting off the throttle. Which of these is the LEAST likely cause?
When installing a new clutch disc and pressure plate, the technician should:
A viscous coupling in an all-wheel drive system is used to:
A clutch chatters during engagement from a stop. Which of these could be the cause?
A rear axle produces a whine that changes when the vehicle switches from drive to coast. Technician A says incorrect pinion depth could be the cause. Technician B says a worn pinion bearing is the cause. Who is right?
A manual transaxle clunks each time the driver lifts off the throttle in first gear. What is the MOST likely cause?
An AWD vehicle binds in turns. Front tires measure 0.31 inch tread depth and rears measure 0.16 inch. Which of these could be the cause?
A manual transmission whines in every forward gear and in neutral with the clutch engaged. Which of these is the LEAST likely cause?
When replacing a transaxle axle shaft seal, the technician should:
A front-wheel drive vehicle shudders during hard acceleration from a stop but is smooth at steady speed. Which of these could be the cause?
A clutch shudders and rattles at idle on a vehicle with a dual-mass flywheel. Technician A says a warped clutch disc could be the cause. Technician B says worn dual-mass flywheel springs could be the cause. Who is right?
The interlock mechanism in a manual transmission shift cover is used to:
Which of these is the LEAST likely cause of a rear axle that leaks lubricant at the pinion seal?
An AWD vehicle with an electronically controlled coupling has no rear drive. Technician A says a fault in the coupling control circuit could be the cause. Technician B says the coupling may need initialization after replacement. Who is right?
Reading Your Results: A3 Manual Drive Train and Axles, Test 2
This test comes at the same content areas from the bench. There are more questions about setup and assembly procedure, more clutch service, and more of the four-wheel drive faults that bind or fail to transfer torque rather than making a noise. The questions you missed here point somewhere different than Test 1's would.
If you missed the differential setup questions
Ring and pinion setup is where A3 separates technicians who have done the job from those who have read about it, and this test leans on it. Backlash is the clearance between the meshing teeth and is changed by moving the ring gear laterally with side bearing adjusters or shims, so too much backlash means the ring gear sits too far from the pinion. Pinion depth is a separate setting made with a shim behind the pinion head bearing, and it controls where on the tooth face the contact pattern sits. A collapsible spacer is a one-way adjustment: it crushes permanently to set preload, so the nut is tightened in small steps with preload checked after each one, and it can never be backed off to recover. Keeping those three straight is most of the battle, since correcting one with another produces an axle that reads acceptable on paper and howls on the road.
If you missed the questions built on a measurement
Three questions here give you a reading against a limit, and each one is asking whether you know what the number controls.
If you missed the clutch service questions
Several questions here are about doing clutch work in a way that will not create a comeback. Pressure plate bolts are tightened gradually in a crossing pattern so the cover seats evenly and the diaphragm is not distorted. A clutch disc has a longer hub on one side and it faces a specific direction, which is why a disc installed backward will not release. Oil on a disc facing changes the friction unevenly across the surface, so the clutch grabs and releases as it engages and the customer describes it as chatter rather than slip. On the exam, these questions are asking whether you know what the step is protecting against.
If you missed the EXCEPT and LEAST likely questions
Four appear on this test, and the method is the same one that works on the real exam. Identify what the three real causes share before you look for the odd one out. On the clunk-on-torque-reversal question, three answers all involve lash being taken up somewhere in the driveline and one is a balance problem that produces a vibration instead. On the pinion-seal-leak question, three answers all drive lubricant past that seal and one is a bearing that sits too far inboard to affect it. Naming the shared trait first is faster and far more reliable than working through four options one at a time.