Noisy drive train operation is usually the fault of the transmission.
The transmission oil is at the proper level when it is:
A driver complains that the transmission jumps out of gear when the vehicle is driven over a bumpy road surface. The problem could be:
A gear ratio of 7.5:1 would have a lower torque output than a ratio of 3.3:1
If a 13 speed twin countershaft transmission is noisy in all gears except high range direct, the probable cause is:
Thread sealant is required on all open-hole bolts on a transmission case to prevent oil leakage.
Upon inspection of a twin countershaft transmission, the input gear (main drive gear) is found to have excessive spalling. What is the proper repair?
A gear cut with the teeth at an angle to the axis of the gear is a ______________gear.
A gear cut with the teeth straight, parallel to the shaft, is a ___________gear.
Which type of transmissions require double-clutching between shifts?
The twin countershaft design transmission:
Besides the main drive gear, what must also be marked for timing purposes before disassembling the front section?
When shifting into a lower gear range, output torque is ________________ and output speed is _______________.
If an engine applies 1200 foot lbs. of torque to an input shaft and the gear ratio in first gear is 12:1 what is the output torque to the drive shaft?
When discussing the operation of a twin countershaft transmission, which of these statements is correct?
Transmission PTO drive gears are keyed to the countershafts:
What is the main problem or concern of helical cut gears?
When discussing the actions of wear to the syncro''s in a transmission, which of these statements is not true?
If a technician forgot to install an interlock pin in a shift rod cover. Which of the following might occur?
Which of the following may cause excessive wear on a shift fork?
When rebuilding a transmission, extra attention must be paid to which gear in a twin counter-shaft transmission, because it does more work than any other gear?
When rebuilding a transmission, a technician finds that there are broken pins on the synchronizer. What may have caused this problem?
When mounting a PTO, a technician must:
When towing a vehicle with axles in place, driveshaft in place and wheels turning the output shaft of the transmission, what is turning in the front (main) section of the transmission?
What may overfilling the transmission oil level cause.
What may air leaks in a transmission shift cylinders cause?
One of the main causes of premature bearing failure in transmission is:
Most new transmissions are filled with synthetic oils.
An important part of transmission removal and overhaul is:
All standard transmission systems require periodic maintenance to locate possible failures before they occur, and:
To increase the torque output capacity of a transmission, designers may add:
Interlock plates are included in the design of transmissions to:
If a transmission is noisy in all gears except direct, what might be the problem?
If a twin countershaft standard transmission is equally noisy in all the gears, what may be the problem?
When a modern ten speed transmission is shifted from low to high range, how are the range selectors shifted?
A transmission is misaligned to the engine, which gear would be most likely to jump out?
While inspecting a transmission for reported for oil leaks, the technician notices that a gasket appears to be blown out of their mating sealing surfaces. What could cause this to happen?
A broken transmission mount can cause any of the following EXCEPT:
Besides causing a possible vibration what might a bent mainshaft also cause?
Transmission drive shaft yokes with worn or damaged seal surfaces must be:
To protect the transmission when towing any equipment with a standard transmission, it is advisable that you should pull the axle shafts or tow with the drive wheels off the ground.
Excessive gear clashing can cause:
Transmission gear tooth impact fractures are most commonly caused by:
The part of the synchronizer assembly that engages with the clutch teeth of the gear is the:
All of the gears that are on the main shaft are fixed in place except the reverse gear.
The shaft that transmits the power from the clutch to the rest of the drivetrain is the:
Most transmissions collect ferrous metallic debris:
What is the most common cause of bearing failure in a transmission?
Before disassembly and to ensure the proper timing of a three-countershaft transmission, what will the technician do?
A technician is dismantling a transmission counter shaft and notices that a bearing outer race is marred with slight brinelling. What could cause this type of marking?
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