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Heavy Duty Truck Systems

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Quiz 19 :

Automatic Transmission Maintenance

Quiz 19 :

Automatic Transmission Maintenance

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What is the range of normal operating temperatures for an Allison hydromechanical transmission?
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Multiple Choice
Answer:

Answer:

B

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When should an Allison automatic transmission be fitted with an auxiliary filter?
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Multiple Choice
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Answer:

D

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Technician A says that during a stall test,you should carefully observe the engine rpm.Technician B says that during a stall test,the converter-out temperature should be monitored.Who is correct?
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Multiple Choice
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Answer:

C

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Technician A says that when checking the oil level on the dipstick of an Allison transmission and it reads full,the actual oil level should be slightly above the top of the oil pan.Technician B says that at the correct oil level reading,the actual oil level will be slightly above the planetary gearsets.Who is correct?
Multiple Choice
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When adjusting a mechanical modulator control linkage,how should the accelerator pedal be positioned?
Multiple Choice
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Which of these results of a stall test would indicate a problem of poor engine performance rather than a transmission problem?
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How do you adjust an Allison hydromechanical valve body to correct shift points?
Multiple Choice
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Technician A says that shift point adjustment on Allision hydromechanical automatics can be calibrated by engine rpm.Technician B says that shift point calibration on the same transmission can be made on a test stand using output shaft speed.Who is correct?
Multiple Choice
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How should transmission fluid level in an Allison hydromechanical transmission be checked?
Multiple Choice
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Technician A says that shift cycling in Allison hydromechanical transmissions can be caused by improper transmission oil level.Technician B says that harsh downshifts can occur in the same transmission when the transmission oil level is not correct.Who is right?
Multiple Choice
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When adjusting a manual selector linkage on an Allison hydromechanical transmission,in which range should both the selector and the transmission be?
Multiple Choice
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When changing the transmission fluid in an Allison hydromechanical automatic transmission,which of the following should be true?
Multiple Choice
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Which type of gasket sealing compound should be used on the interior of an Allison hydromechanical transmission?
Multiple Choice
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What is the maximum permissable converter-out oil temperature during stall testing?
Multiple Choice
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When the transmission fluid is at operating temperature and the level reads full on the dipstick,which of the following should be true?
Multiple Choice
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If a torque converter stator was freewheeling during a stall test,what would be the indications?
Multiple Choice
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When using the engine speed (rpm)method of adjusting shift points on an Allison hydromechanical transmission,what should be used as the reference speed for checks and any adjustments required?
Multiple Choice
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What precautions must be made before performing a stall test?
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Technician A says that when performing a stall test on an Allison hydromechanical transmission he places selector in the DR position on a deep ratio model.Technician B says that on a four-speed hydromechanical Allison transmission a stall test can be safely performed with the selector in D2,D3 or D4 positions.Who is correct?
Multiple Choice
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During a stall test,what is the maximum time that full stall can be maintained before you have to allow the transmission a cool down period?
Multiple Choice
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