APPLICATION AND TROUBLE SHOOTING GUIDES
1. SP848 - Used on Granular Soils or *Crushed Stone
A. Basic Information
1. Adjust vibration frequency to be "in tune" with soil.
a. Well graded soils generally use 1700-1800 vibrations per minute.
b. Tender soils (clean sand, etc.) can use vibration frequencies as low as 1300 vibrations per minute.
c. *Crushed stone generally requires 1700-1800 vibrations per minute.
d.
Use the vibration meter.
2. Always move the travel control lever and the vibration control lever in the same direction when rolling, either
forward or reverse. With control levers together, in either direction, the vibrator shaft should always rotate
opposite the direction of travel. If it does not, reverse the high pressure hoses to the vibrator motor. To check
direction of vibrator shaft rotation, remove right hand side cover on roll frame and the cap covering end of
vibrator shaft.
3. Operate vibrator only when the roller is in motion.
4. Soil surface should be relatively smooth and level for best compacting results. (Use of motor grader, etc.)
5. Travel speed range of 2-4 MPH is generally most efficient. (Use low travel gear range when vibrating.)
6. Maintain suitable tire pressure for good traction. (23.1 x 26 Diamond tread tire)
a. On well graded soils - 16 PSI.
b. On sandy soils - as low as 11 PSI.
7. Use proper lift thickness for most efficient compaction.
a. The higher percentage of "binder", the thinner the lift.
8. *This vibratory roller is not designed for heavy rock compaction - for heavy rock compaction, use the Rex
Model SP1300.
*Consult Milwaukee Engineering Dept. for further information.
Cont'd. on page 12
