Operating Technique Information
Operate the engine at full rpm for maximum
braking, steering and propel control response.
Operation below full throttle will adversely affect
When climbing steep grades, the propel control
lever must be moved SLOWLY to avoid engine
stall and possible loss of machine control.
Do not apply the parking brake while the machine
is moving unless an emergency exists. Use of the
parking brake as a service brake in regular
operation will cause severe damage to the brake
Attain desired travel speed before engaging the
Avoid using the leveling blade (if equipped) as plow or
digging device. Machine damage may occur.
Do not operate the vibratory system without
machine movement. The lubrication system for the
vibratory system works only while the drum is
turning. Shortened bearing life will result.
Shut the vibratory system off when passing over
concrete or hard pavement.
Begin the first compaction pass along the side of the
work with subsequent passes gradually working
towards the center. Overlap the previous pass by
approximately 200 mm (7.75 in) to eliminate
Before changing the vibratory amplitude selection,
the system should be completely stopped.
Vibratory Operation - High Amplitude
Placing the vibratory system in high amplitude
increases the total dynamic force and height of drum
movement on each vibration cycle.
High amplitude is used whenever:
The job site requires higher compaction forces to
meet density requirements.
The lift or depth of material to be compacted is 254
mm (10.0 in) or more.
NOTE: High amplitude can cause material to break
down if passes continue to be made once the
specified density has been achieved.
NOTE: Every job site is different due to soil conditions,
such as moisture content and material. To
determine the amplitude and the number of
passes required, establish a test plot at each
1. Place vibratory system in high amplitude by moving
vibratory control switch (1) backward.
2. Start the vibratory system by pressing vibration
on/off switch (2) on top of the propel control lever.
3. Stop the vibratory system by pressing vibration
on/off switch (2).
NOTE: Moving vibratory control switch (1) to the off
position will also stop the vibratory system.
NOTE: If decoupling (separation of the drum from the
material being compacted) occurs, select low