CP-563D, CS-563D, CS-573D and CS-583D Vibratory Compactors Vibratory System Caterpillar

Vibratory Magnetic Sensor - Test and Adjust

Usage:

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Personal injury or death can result from sudden machine movement.
Sudden movement of the machine can cause injury to persons on or near the machine.

To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine.

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NOTICE

To avoid damage to the vibratory system during testing, always perform the testing with the vibratory drum on top of tires or on loose dirt. Tires will simulate a non-compacted soil condition. Never operate the vibratory system when the machine is on concrete.

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NOTICE

If a testing time longer than three (3) minutes is required, rotate the drum periodically in order to lubricate the eccentric weight shaft bearings.

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Table 1
Tools Needed
6V-7070 Digital Multimeter (or equivalent)	1

Note: The hydraulic oil temperature should be at least 38°C (100°F).

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Illustration 1	g00471444
Right Side Of Drum As Viewed From Operator Seat (1) Guard. (2) Magnetic sensor.

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Illustration 2	g00471970
Vibratory Magnetic Sensor Location (2) Magnetic sensor. (3) Wires. (4) Case.

Select the resistance scale on the multimeter. Attach the multimeter leads to magnetic sensor terminals. Resistance should be 265 ± 30 ohms. If the resistance is correct go to Step 4 If the resistance is not correct, replace the magnetic sensor. After you have replaced magnetic sensor (2) go to Step 11 and adjust the air gap.

Set the multimeter on the highest resistance scale. Attach one lead of the multimeter to one of magnetic sensor terminals. Touch the other lead to case (4) of magnetic sensor (2) .

Electrical resistance should be infinite. If the multimeter gives any reading, the magnetic sensor should be replaced. After your have replaced magnetic sensor (2) go to Step 11 and adjust the air gap.

Select the AC voltage mode on the multimeter. Attach two leads from multimeter to the magnetic sensor terminals.

Depress the vibratory control switch on the propel lever to the ON position to start the vibratory system. The multimeter should indicate approximately 2 ACV.

If no reading is obtained, magnetic sensor (2) may need to be adjusted and/or replaced. Depress the vibratory control switch on the propel lever to the OFF position to stop the vibratory system. Stop the engine.

To adjust gap, loosen locknut and turn magnetic sensor clockwise until it touches gear. Rotate magnetic sensor (2) counterclockwise one full turn. The gap between the end of the sensor and the gear tooth should be 1.57 mm (0.062 inch). Tighten the locknut.