Magnetic Sensor Adjustment
Magnetic Sensor Installation.
(1) Sprocket. (2) Magnetic sensor. (3) Locknut. (4) Drive shaft.
REFERENCE: For complete information on removing items
listed in step 1, see Remove Drum Support (Vibratory Side) in
Vibratory Drum Disassembly and Assembly module, Form No.
Remove vibratory motor, drum support cover, and
splined coupling from vibratory end of drum.
Check the sprocket (1). It must be positioned directly
under the magnetic sensor (2), and must be securely
attached to the drive shaft (4).
Using a feeler gauge, check the gap between magnetic
sensor and tip of sprocket tooth. Gap should be 1.57
mm (.062 in).
Adjust gap, if necessary, by loosening locknut (3) and
turning magnetic sensor in or out until correct gap is
Retighten locknut (3).
Install splined coupling, drum support cover, and
vibratory motor to vibratory end of drum.
Vibratory Tachometer Calibration
(1) VPM meter. (2) Calibration screw.
Compare frequency of the vibratory system on the
gauge to that of hand held Vibratory Tachometer 133-
Large dial (1) should be set on #8.
Small calibration screw (2) can be used to calibrate the
gauge. A 2.0 mm (5/64 in) allen wrench should be used
to adjust the small calibration screw. An access hole is
available on the bottom side of the console.