SECTION 4 OPERATING INSTRUCTIONS
4-16 DD-29/31HF/38HF Vibratory Asphalt Compactors
Figure 4-24
4. Place engine throttle control (13, Figure 4-25) to the Hi (Up) position.
Figure 4-25
5. Move propulsion control (14, Figure 4-23) in the desired direction and safe
speed of travel as determined by the conditions.
6. Adjust water spray flow control (12, Figure 4-25) for the desired amount of
spray on the drums.
NOTE: Only switch vibration ON when machine is moving. Always switch
vibration OFF before the machine comes to a halt. Never allow machine
to vibrate when machine is stationary.
7. Once the travel of the machine is underway, the drum vibration can be selected
by pressing Vibration ON/OFF switch (15, Figure 4-23).