1234648 ENGINE AR-COMPLETE Caterpillar parts
3406E
Rating:
Alternative (cross code) number:
CA1234648
123-4648
1234648
CA1234648
123-4648
1234648
TRUCK ENGINE,
Compatible equipment models: 1234648:
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Calibrating The Transducer
After installing a new transducer (as shown in Illustration 3) on the 8T8029 Grade Control, do the following steps.
Illustration 3.1. 12 VDC power supply.2. Flat screwdriver.1. Connect the positive lead of the 12 volt power supply to Pin B of the 10 pin connector and the negative lead to Pin A.2. Rotate the hub on the control until the stop screw is equally spaced between the two stop pins as shown in Illustration 4. A wedge can be used to keep the hub in place.
Illustration 4.3. The needle on the deviation meter should be centered as shown in Illustration 1. If it is not, loosen the mounting screws and rotate the transducer until the needle is centered. Tighten the mounting screws. See Illustration 5.
Illustration 5.Slope Control
Repair Parts For 8T8030 Slope Control
1 - 5E8945 Slope Sensor1 - 5E8944 Cover1 - 5E8642 Amplified Module1 - 7R0448 Switch1 - 7R0449 Deviation Meter1 - 7R0446 Potentiometer1 - 7R0447 Cap And Chain Large1 - 7R0445 Cap And Chain SmallFacts To Aid In Troubleshooting
When preliminary investigation of a system malfunction indicates trouble in the slope control, keep the following facts in mind to determine the specific malfunction.
1. The deviation meter will indicate deviations in slope whenever power is supplied to the slope control, regardless of the position of the Run/Standby switch.2. In the RUN mode, the amplifier output is connected to the servovalve. In the STANDBY mode, the amplifier is not connected to the servovalve.3. If the gain adjustment on the front panel is turned fully counterclockwise (for minimum gain), the device's slope will not affect the amplifier or servovalve. The unit is effectively shut off.4. Preliminary checks should include examination of cables and leads for damaged or broken wires. Examine areas where shorting may occur and check the power supply to be sure it is greater than 11 VDC.5. A Slope/Grade switch located on the printed circuit board of the amplifier module must always be in the SLOPE position. See Illustration 2.Troubleshooting Procedure
1. Check the deviation meter operation when the slope control is in the STANDBY position. Use the tow point jog switch to vary the screed position and note the indication. Then use the remote set point to vary the slope setpoint. In both situations, the deviation meter should deflect in one direction and then the other each time the conditions are reversed. If the meter does not move, turn the gain potentiometer fully clockwise and check for operation again. A setpoint change from 0.0% to 0.5% slope should deflect the meter to the red/white divisions at maximum gain.2. Disconnect the power and output cable connector from the slope control. Check voltage at the socket end of the cable for at least 11 VDC between Pins A (-) and B (+). If voltage does not exist at this point, the cable or the voltage supply is faulty.3. If power is available, place 12 volts across Pins E and F of the control's ten pin connector. Place the Run/Standby switch in
After installing a new transducer (as shown in Illustration 3) on the 8T8029 Grade Control, do the following steps.
Illustration 3.1. 12 VDC power supply.2. Flat screwdriver.1. Connect the positive lead of the 12 volt power supply to Pin B of the 10 pin connector and the negative lead to Pin A.2. Rotate the hub on the control until the stop screw is equally spaced between the two stop pins as shown in Illustration 4. A wedge can be used to keep the hub in place.
Illustration 4.3. The needle on the deviation meter should be centered as shown in Illustration 1. If it is not, loosen the mounting screws and rotate the transducer until the needle is centered. Tighten the mounting screws. See Illustration 5.
Illustration 5.Slope Control
Repair Parts For 8T8030 Slope Control
1 - 5E8945 Slope Sensor1 - 5E8944 Cover1 - 5E8642 Amplified Module1 - 7R0448 Switch1 - 7R0449 Deviation Meter1 - 7R0446 Potentiometer1 - 7R0447 Cap And Chain Large1 - 7R0445 Cap And Chain SmallFacts To Aid In Troubleshooting
When preliminary investigation of a system malfunction indicates trouble in the slope control, keep the following facts in mind to determine the specific malfunction.
1. The deviation meter will indicate deviations in slope whenever power is supplied to the slope control, regardless of the position of the Run/Standby switch.2. In the RUN mode, the amplifier output is connected to the servovalve. In the STANDBY mode, the amplifier is not connected to the servovalve.3. If the gain adjustment on the front panel is turned fully counterclockwise (for minimum gain), the device's slope will not affect the amplifier or servovalve. The unit is effectively shut off.4. Preliminary checks should include examination of cables and leads for damaged or broken wires. Examine areas where shorting may occur and check the power supply to be sure it is greater than 11 VDC.5. A Slope/Grade switch located on the printed circuit board of the amplifier module must always be in the SLOPE position. See Illustration 2.Troubleshooting Procedure
1. Check the deviation meter operation when the slope control is in the STANDBY position. Use the tow point jog switch to vary the screed position and note the indication. Then use the remote set point to vary the slope setpoint. In both situations, the deviation meter should deflect in one direction and then the other each time the conditions are reversed. If the meter does not move, turn the gain potentiometer fully clockwise and check for operation again. A setpoint change from 0.0% to 0.5% slope should deflect the meter to the red/white divisions at maximum gain.2. Disconnect the power and output cable connector from the slope control. Check voltage at the socket end of the cable for at least 11 VDC between Pins A (-) and B (+). If voltage does not exist at this point, the cable or the voltage supply is faulty.3. If power is available, place 12 volts across Pins E and F of the control's ten pin connector. Place the Run/Standby switch in