Usage:
A. General System Check
1. To ascertain that the vibratory system is functioning correctly (2400 VPM at 2850 RPM) a simulated field test is in order.
2. This can be accomplished by suspending the machine a few inches off the ground and running the engine at 2850 RPM.
| NOTICE |
|---|
When testing do not set engine to run at more than 2850 RPM at full load. |
3. Hold a reed vibra-tachometer in one hand and place little finger against machine frame. Engage the vibratory system and check the VPM reading on the vibra-tachometer.
4. If a reading of 2200 vpm or lower is attained the hydraulic system, engine rpm and/or drum bearing drag should be checked. (Refer to Engine Owners Manual and Drum Service Manual - 08).
B. Solenoid Valve Check
1. If the vibratory system will not engage check the 14 ampere fuses. Replace the fuses if necessary.
NOTE: Refer to Vibratory Control Wiring Diagram
2. If solenoid is receiving correct voltage (12 volts) when vibratory switch is on, but machine still doesn't vibrate, manually push solenoid plunger (5) all the way in.
3. If the machine now vibrates the solenoid is either faulty or binding. Repair or replace as necessary.
4. If machine doesn't vibrate check pump and relief valve.
C. Pump And Bypass Valve Check
1. To check pump and relief valve insert a 3000 psi gauge in port (6).
2. With the vibratory system engaged the gauge should peak at 2000 psi if the pump and relief valve are functioning properly.
3. If the bypass valve relieves at a pressure higher or lower than 2000 psi it should be reset.
4. To do this remove plug (7).
5. Turn set screw (8) in to raise pressure, out to lower pressure.
6. When proper pressure reading is obtained replace plug and o-ring (7).
7. If a 2000 psi relief reading cannot be attained check pump for leaks, wear, broken or missing parts. Repair or replace as necessary.
D. Vibratory Motor Check
1. If relief valve and pump check out okay, but the machine still doesn't vibrate, the vibratory motor will have to be inspected.
2. To do this disconnect the motor from the drum and run it without load to check for leaks. If leaks are found repair or replace as necessary.
3. Another test is to remove case drain line at tank and run the motor.
4. If the oil flow from the motor is more than just a trickle the motor may be faulty. Repair or replace as necessary.
VIBRATORY CONTROL WIRING DIAGRAM S/N 792 thru
VIBRATORY CONTROL WIRING DIAGRAM S/N 101 thru 791