NEW
Font size
WorksheetsYear 2 Transmissions
Total questions: 30
Worksheet time: 22mins
A final drive housing over-heating can be caused by?
Insufficient oil
Driving at high speeds for extended periods of time
Excessive back-lash between crown wheel and pinion
Worn propshaft universal joint bearings
when gear changing a constant grating noise when engaging 3rd gear, what's most probable cause?
Excessive end-float between 3rd gear and mainshaft
3rd/4th gear synchro hub defective
Wrong grade of oil used in gearbox
2nd/3rd gear synchro hub siezed
Why are propshafts normally hollow?
Easier to manufacture
Good strength to weight ratio
Easy to weld coupling too
Reduces whip at high speeds
1st gearset has a ratio of 4:1 the 2nd gearset has a ratio of 2:1 whats the overall gear ratio?
6:1
3:1
2:1
8:1
What component is splined onto the input shaft?
The thrust bearing
The spigot bearing
The pressure plate
The driven plate (clutch plate)
A manual synchromesh gbox is constantly blowing the rear gearbox oil seal the probable cause is:
Excessive lift at the 1st motion shaft rear bearing
Excessive lift at the 1st motion shaft spigot bearing
Excessive lift at the mainshaft front bearing
Excessive lift at the mainshaft rear bearing
Why are some heavy vehicles fitted with a twin plate clutch?
To increase the weight of the vehicle
to decrease torque transfer from engine to transmission
To allow more clutch slip when pulling away
To allow a smaller diameter clutch to be fitted
The clutch pedal on a commercial vehicle is heavy to operate, what is the most probable cause?
Insufficient free play at clutch thrust bearing
Air in the hydraulic system
Contaminated clutch centre disc
Failure of the air assistance pack
A clutch driven plate is splined to the gearbox:
layshaft
input shaft
output shaft
output shaft
The main purpose of the final drive reduction gear is to transmit the drive through?
45 degrees
90 degrees
180 degrees
360 degrees
driver complains a shuddering when pulling away from stationary position, possible fault?
Oil contamination on the clutch centre disc
Clutch slave cylinder air pack leaking
Clutch release fork bent
A mis-aligned starter ring gear
What is the importance of propshaft balance in relation to the vehicles body?
It has no relationship at all
It will stop the spring leaves from splaying
It will help to eliminate body vibrations
It will cut down wear on suspension components
What gearbox device stops you engaging two gears at once?
a synchro hub
a gear interlocking device
a reverse gear idler
a selector rail detent
For what purpose is a gear-interlocking device fitted?
To allow all gears to be engaged at any one time
To allow only one gear to be engaged at any one time
To hold the synchro-hub in position
To allow two gears to be engaged at any one time
What is the probable effect of excessive free travel at the clutch pedal?
Unable to engage gears
High pedal height
Noisy thrust bearing
Clutch slip
A fully floating hub assembly uses?
A single tapered wheel bearing
A single non tapered wheel bearing
Two tapered wheel bearings
Two non tapered wheel bearings
What gear-set is commonly used in a double reduction hub assembly?
Spiral bevel
Spur
Hypoid
Epicyclic
The type of gear-set used by an automatic transmission is known as:
synchromesh
spur
epicyclic
constant mesh
At what stage during normal vehicle operation is the stator in a torque converter locked?
At low road speed during acceleration
At high road speed during acceleration
At high road and high engine speeds
At low road speed and the engine ticking over
Carrying out a stall test for more than the recommended time will cause:
the engine to overheat
the gearbox to overheat
excessive engine wear
excessive transmission wear
During the operation of a fluid coupling the fluid in the impeller flows radically outwards because:
It is forced to circulate by engine oil pump
It is subjected to centrifugal force
The impeller and turbine rotate at the same speed
Low pressure exists in the turbine member
A vehicle has a fully-floating rear axle arrangement. Which of the following statements is TRUE?
a. A broken axle shaft will not cause a loss of drive to the wheels
The axle shaft supports the vehicle's weight and transmits torque
A broken axle shaft will cause the wheel to fall off
A broken axle shaft will not cause the wheel to fall off
Air is present in a hydraulic clutch operating system. This will:
produce clutch judder during engagement
cause the clutch to drag
cause the hydraulic fluid to overheat
cause clutch to slip when pulling away
When engaging gear there is noticeable clutch judder. ONE Non transmission possible cause is:
broken clutch diaphragm spring
badly worn engine mountings
centre plate sticking on gearbox input shaft splines
low hydraulic fluid
A lock up facility in a torque converter is used to:
provide a 'park' position
improve converter efficiency
prevent unauthorised movement of the vehicle
all of the above
At what stage during normal vehicle operation is the stator in a torque converter locked?
At low road speed during acceleration
At high road speed during acceleration
At high road and high engine speeds
At low road speed and the engine ticking over
When checking brake fluid for serviceability the technician should use a:
hygrometer
hydrometer
odometer
thermometer
What does the meter measure during an exhaust emission smoke test?
Opacity
Exhaust gas temperature
NOx
CO2
You should only clean and work on equipment if you:
want to
have the manual
are told to
have been trained
Air supply, exhaust and emission system performance checks should be carried out at:
pre-delivery inspections
interim services
full services
All of the answers shown
