Align the drive axle over dyno drums.

• A. Not Applicable
• B. True
• C. False
• D. Not Sure

Answer: (B)

Aligning the drive axle over the dyno drums is about making the torque path clean and stable. When the drive axle sits directly over the rollers, the engine’s power is transmitted to the drums in a straight line, which gives accurate torque and power readings and keeps loads aligned with the drum axes. Proper alignment also ensures the tires or tires-to-drum contact is even, reducing the risk of slip, uneven wear, or binding that could happen if the axle were offset. It helps prevent lateral forces that could push the vehicle off-center on the rollers and protects the drivetrain and brakes from abnormal stresses during the test. That’s why this step is treated as essential in prep for dynamometer testing.