ASE A3
Symptoms of a stuck pilot bearing?
Clutch not disengaging Noise Clutch hub damage
What is a viscous clutch designed for?
Compensating for differences in axle rotation
Gear noise in only one gear
Constant mesh gear combination for that gear damaged
Warped pressure plates...
... should be replaced
When inspecting shift linkage always replace?
...Bushings
Differential case preload maintains...
...Ring gear position
Ring and pinion gears...
...should be replaced as a set
Normal total pre-load is between?
10-25 inch pounds
How much vacuum is required to operate a transfer case?
15hg
What tool is used to measure ring gear runout?
A dial guage
What is used to check the clearance between the shift fork and the synchronizer sleeve?
A feeler guage
A squeaking noise in reverse is caused by...
A worn cross shaft bearing surface
On an screw type adjustable system how do you increase preload?
Adjust both in.
On an screw type adjustable system how do you decrease preload?
Adjust both out.
On an screw adjustable system how do you raise preload and lower backlash?
Adjust left in.
On an screw adjustable system how do you raise preload and backlash?
Adjust right in.
If a noise is loudest on corners then the noise is most likely coming from...
Axle bearings Diff Gears Final drive case bearings
Brinelling means?
Bearing raceway has surface indentations.
Check runout before or after installing pressure plate cover?
Before
Noise from differential while turning is called?
Chatter
Mark position of flywheel in relation to...
Crankshaft
Chuckle is normally caused by...
Differential pinion or side gear damage. (Sound is heard around corners but also during acceleration and deceleration.
Hard shifting
Excessive shift effort, sleeve not sliding over blocking ring and gear teeth
Jumping out of gear
Excessive wear in synchronizer inserts, springs, shift forks or shift rails or countershaft
Binding U-Joint will damage??
Extension housing bushing and seal
If a transmission can be shifted into two gears at the same time, what is the MOST likely cause?
Faulty interlock
What type of axle has bearings on the axle housing that supports the vehicle's weight?
Full floating axle
Blockout
Gear cones worn, blocking ring worn
worn blocking rings in the fluid come from?
Gear wear
Worn bearings will make what type of noise?
Growl or grating
What kind of noise will chipped gear teeth make?
Growling or grinding noise
What tool is used to check pinion bearing preload?
Inch pound torque wrench
On a shim adjustable system, how do you increase pre-load?
Increase the thickness of both shims.
Noise: Neutral, clutch engaged (pedal up)
Input shaft bearing
Correct face runout by...
Installing shims
Whining gears can be caused by.....
Low fluid
How many times can a collapsible sleeve be tightened?
Once, and must be replaced if over tightened.
Noise: In gear, clutch disengaged (pedal to floor)
Pilot bushing or bearing
On a shim adjustable system, how do you decrease pre-load?
Reduce the thickness of both shims.
Noise: Neutral, clutch disengaged (pedal to floor)
Release bearing
If backlash is too low on a shim system how do you increase it?
Remove shims from the left and add to the right.*
If backlash is too high on a shim system how do you lower it?
Remove shims from the right and add to the left.*
Outer ends of axle shafts can be supported by what 3 types of bearings?
Roller, tapered, and ball
Driveshaft imbalance can sometimes be solved by...
Rotating the shaft and reinstalling.
Bell housing transmission bore and the rear face should be checked for?
Runout
A transaxle jumps out of gear under load. What is the most likely cause?
Shift linkage is maladjusted, worn or loose
Gear clash (loud grating or buzzing sound)
Sleeve camfers worn
What type of bearings require preload?
Tapered roller bearings
Road speed noise (increases and decreases with speed) is caused by...
Tires, bearings, diff case bearings (Tire noise will not change in corners, bearing noise will)
Slip yoke is lubed by?
Transmission fluid in transmission
True or false? Vibration at high speed can be caused by an incorrect rear "U" joint operating angle
True
Noise at steady speed (specific road speed) can be caused by...
Variations in the ring and pinion tooth contact patterns
What are the three critical clutch pedal measurements?
Which of the following are the three critical clutch pedal measurements?
gold-colored particles in the fluid come from?
Worn blocking rings
Clunk on acceleration and deceleration most likely cause...
Worn differential pinion shaft or side gear or worn drive axle inner joints.
Noise during de-deceleration can be caused by...
Worn front pinion bearing
Chatter is normally caused by...
Worn limited slip differential (Changing fluid normally helps)
What isn't noticible in 4th gear?
Worn main drive gear bearing.
Noise during acceleration can be caused by...
Worn pinion bearing or improper gear tooth contact.
Can a bad speed sensor affect shift pattern?
Yes
A vehicle comes in with hard shifting concerns, particularly into first gear. Technician A says the first speed blocking ring is the MOST likely cause. Technician B says the clutch could be out of adjustment. Who is right?
b. B only
Clutch slippage may be caused by which of the following? a. Worn or rough clutch release bearing b. Excessive input shaft end play c. Leaking rear main seal d. Weak or broken torsional springs
c. Leaking rear main seal
A transfer case will not shift from the low gear ratio up to direct drive or 1:1 ratio. Which of the following is the MOST likely cause? a. Broken shift shaft spring b. Faulty shift indicator c. Damaged planetary gearset d. Broken shift shaft
d. Broken shift shaft
Axles that require end play adjustment normally use...
thrust washers
Intermittent noise from the differential is called?
Chuckle