Subtopic: Calculation of power, torque, fuel consumption, heat load and power losses
Question Statement:
Which of the following operational precautions are recommended when using the differential lock on an agricultural tractor?
Options:
(A) Engage the differential lock when one drive wheel starts slipping severely in mud
(B) Disengage the differential lock before attempting to make a sharp headland turn
(C) Keep the differential lock engaged at high road transport travel speeds
(D) The differential lock rigidizes both rear axle shafts to turn at identical speeds
Answer Key:
A, B, D
Step-by-Step Solution & Explanation
- A is correct: Engaging differential lock locks the differential mechanism so both wheels spin at equal speed, extracting the tractor from slippery spots.
- B is correct: Differential lock must be disengaged prior to steering turns to prevent severe driveline windup or tire scuffing/loss of steering control.
- C is incorrect: Never engage differential lock at high transport speeds due to steering hazard.
- D is correct: The dog clutch physically locks one axle shaft to the differential cage.