TM 5-3895-382-24
NOTE:
Tests should be performed on tires or loose dirt.
Tires are recommended. Never operate the
vibratory system when the machine is on
concrete.
NOTE:
The hydraulic oil temperature should be at least
38 ° C (100 ° F). The vibratory system should not
be run longer than five minutes with the drum
stationary. If testing time longer than five minutes
is required, the drum should be periodically
rotated to lubricate the eccentric weight shaft
bearings.
1.
Stop the machine and apply the parking brake.
2.
Start and run the engine at high idle (2350 50 rpm).
3.
Place the vibratory amplitude selector switch in HIGH
AMPLITUDE position. Rotate vibrations per minute
(vpm) control dial (1) to the full clockwise position.
4.
Depress the vibration control switch to start the vibratory
system. Read the vibrations per minute (vpm) from the
optional gauge or from either vibratory tachometer. The
maximum frequency for high amplitude should be 1875
75 vpm.
NOTE:
If the frequency is not correct, refer to the
troubleshooting guide.
Fuse Compartment (View A-A).
(2) Low amplitude rheostat. (3) High amplitude rheostat.
5.
Turn the vibrations per minute control dial (1) to the full
counterclockwise position. Read the vpm from the
optional vpm gauge or from either vibratory tachometer.
The minimum frequency for high amplitude is 1400 50
vpm. To adjust the minimum frequency, loosen the
locknut for high amplitude rheostat (3) and turn the
screw to obtain the correct minimum frequency. When
the minimum frequency is correct, tighten the locknut.
6.
Depress the vibratory control switch to stop the vibratory
system.
7.
Move the vibratory amplitude selector switch to the
LOW AMPLITUDE position. Rotate the vibrations per
minute (vpm) to the full clockwise position.
8.
Depress vibratory control switch to start the vibratory
system. Read the vibrations per minute (vpm) from
optional vpm gauge or read either vibratory tachometer.
The maximum vpm for low amplitude is 1875 75 vpm.
NOTE:
The maximum frequency values for HIGH and
LOW amplitude should be within 50 vpm of each
other.
NOTE:
If the frequency is not correct, refer to the
troubleshooting guide.
9.
Turn vibrations per minute control dial (1) to the full
counterclockwise position. Read the vpm from the
optional vpm gauge or from either vibratory tachometer.
The minimum frequency for low amplitude is 1400 50
vpm. To adjust the minimum frequency, loosen the
locknut for low amplitude rheostat (2) and turn the screw
to obtain the correct minimum frequency. When the
minimum frequency is correct, tighten the locknut.
10.
Depress the vibratory control switch to stop the vibratory
system.
13-37
