TM 5-3895-373-20
REFERENCE INFORMATION
SCREED VIBRATOR CIRCUIT
Failure of main vibrator motor will inhibit oil flow to
extension screed vibrator motors.
The cams on the vibrator shaft purposely cause the shaft
to be unbalanced. When manually turning the vibrator
shaft, the cams will normally try to fall to their lowest
rotary position. If checking shaft rotation, do not mistake
the cam weighing condition for binding or motor damage.
Open center top right and center top left access doors
per TM 5-3895-373-10 to gain access to vibrator valve.
Check for 12 vdc and for ground at solenoid coil harness
connector leads.
To avoid reverse polarity to multimeter, touch negative
probe to equipment frame and use positive probe to
check both connector terminals for +12 volt supply.
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