0309937 JOHNSON PLATE


0309937 PLATE JOHNSON 20R69B, 20R70C, 20R71S, 20R72R, 20R73A, 25E72R, 25E73A, 25E74M, 25E75B, 25E76E, 25R69B, 25R70C, 25R71S, 35E76G, FD-22A PLATE
0309937 PLATE JOHNSON
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Buy PLATE 0309937 JOHNSON genuine, new aftermarket parts with delivery
Number on catalog scheme: 19
 

BRP JOHNSON entire parts catalog list:

20R69B, 20R69D, 20RL69B, 20RL69D 1969
20R70C, 20R70E, 20RL70C, 20RL70E 1970
20R71S, 20RL71S 1971
20R72R, 20RL72R 1972
20R73A, 20RL73A 1973
25E72R, 25EL72R, 25R72R, 25RL72R 1972
25E73A, 25EL73A, 25R73A, 25RL73A 1973
25E74M, 25EL74M, 25R74M, 25RL74M 1974
25E75B, 25EL75B, 25R75B, 25RL75B 1975
25E76E, 25EL76E, 25R76E, 25RL76E 1976
25R69B, 25R69D, 25RL69B, 25RL69D 1969
25R70C, 25R70E, 25RL70C, 25RL70E 1970
25R71S, 25RL71S 1971
35E76G, 35E76S, 35EL76G, 35EL76S, 35R76G, 35R76S, 35RL76G, 35RL76S 1976
FD-22A, FD-22E, FD-22M, FDL-22A, FDL-22E, FDL-22M 1968

Information:


Table 1
Diagnostic Codes Table    
Description     Conditions which Generate this Code     System Response    
544-2 Engine Cooling Fan Speed Sensor : Erratic, Intermittent, or Incorrect     The signal from the fan speed sensor is intermittent or the signal has been lost.     The code is logged.    
544-8 Engine Cooling Fan Speed Sensor : Abnormal Frequency, Pulse Width, or Period     The signal from the fan speed sensor is intermittent or the signal has been lost.     The code is logged.    The engine cooling fan speed sensor provides a signal to the Electronic Control Module (ECM). The ECM controls fan speed by varying the current to the fan control solenoid.Note: The variable fan speed control uses the air temperature sensor for the inlet manifold to control the engine cooling fan speed. To prevent the engine cooling fan speed from unnecessarily increasing, the air temperature sensor for the intake manifold is ignored for a period of 90 seconds after the engine start-up.The sensor outputs a frequency that is directly proportional to fan speed. The sensor generates a signal pulse for each revolution of the fan. The output frequency varies between 466 Hz to 1073 Hz over the speed range between 200 rpm and 1150 rpm.
Illustration 1 g01704454
Schematic for the fan speed sensorTest Step 1. Inspect Electrical Connectors and Wiring
Turn the keyswitch to the OFF position.
Thoroughly inspect ECM connector J1/P1, ECM connector J2/P2, and all other connectors in the wiring harness. Refer to Troubleshooting, "Electrical Connectors - Inspect" for details.
Illustration 2 g01713294
P1 terminals that are associated with the cooling fan speed (P1-32) Fan speed sensor + (P1-33) Fan speed sensor -
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the fan speed sensor.
Check the allen head screw on each ECM connector for the proper torque. Also, check the allen head screw on the customer connector for the proper torque. Refer to Troubleshooting, "Electrical Connectors - Inspect" for the correct torque values.Expected Result:All connectors, pins, and sockets are completely inserted and coupled. The harness and wiring are free of corrosion, of abrasion, and of pinch points.Results:
OK - The harness and connectors appear to be OK. Proceed to Test Step 2.
Not OK - There is a problem with the connectors and/or wiring.Repair: Repair the connectors or wiring and/or replace the connectors or wiring. Ensure that all of the seals are properly in place and ensure that the connectors are completely coupled. Verify that the repair eliminates the problem.STOPTest Step 2. Check the Status of the Engine Fan Speed with Caterpillar Electronic Technician (ET)
Turn the keyswitch to the OFF position.
Connect Cat ET to the service tool connector.
Turn the keyswitch to the ON position.
Access the "Fan Override Test" under the "Diagnostics" menu.
Start the "Fan Override Test" on Cat ET. Set the fan speed to 500 rpm.
Use a 1U-6602 Photo-Tachometer to determine the actual speed of the fan.
Compare the engine fan speed that is reported by Cat ET to the actual engine fan speed that is reported by the photo-tachometer.
Deactivate the "Fan Override Test".
Turn the keyswitch to the OFF position.Expected Result:The actual fan speed is within 50 rpm of the engine fan speed that is reported by Cat ET.Results:
OK - The engine fan speed is within the desired rpm range.Repair: The sensor is operating correctly. There may be an intermittent electrical problem in a connector or in the harness. If an intermittent problem is suspected, refer to Troubleshooting, "Electrical Connectors - Inspect".STOP
Not OK - The engine fan speed is not within the desired rpm range. Proceed to Test Step 3.Test Step 3. Measure the Resistance for the Fan Speed Sensor at the Sensor Connector
Turn the keyswitch to the OFF position.
Disconnect the sensor connector from the wiring harness.
Measure the resistance between terminal 1 and terminal 2 at the sensor connector.
Restore all connectors and wiring to the original configuration.Expected Result:The resistance measures approximately 1050 100 Ohms.Results:
OK - The resistance measures approximately 1050 100 Ohms. Proceed to Test Step 4.
Not OK - The resistance did not measure approximately 1050 100 Ohms.Repair: Replace the fan speed sensor. Verify that the replacement corrects the original problem.STOPTest Step 4. Measure the Resistance for the Fan Speed Sensor at the ECM Connector
Disconnect the P1/J1 ECM connector.
Measure the resistance between P1/33 and P1/32.
Restore all connectors and wiring to the original configuration.Results:
OK - The resistance measures 1050 100 Ohms.Repair: Replace the ECM. Refer to Troubleshooting, "ECM - Replace". Verify that the problem is resolved.STOP
Not OK - The resistance does not measure 1050 100 Ohms.Repair: Repair the wiring between the ECM and the sensor.STOP


Parts plate JOHNSON:

0307165
0308351
 
0308351 PLATE
FD-22A
0303069
 
0303069 PLATE,Impeller housing
20R69B, 20R70C, 20R72R, 20R73A, 25E72R, 25E73A, 25E74M, 25E75B, 25E76E, 25E77S, 25E78C, 25R69B, 25R70C, 25R71S, 35E77C, 35E78R, FD-22A
0315593
 
0315593 PLATE, Upper applique, port
115ESL70D, 25R70C, 40E70A, 40ES70A, 60ES70B, 85ESL70B
0315594
 
0315594 PLATE, Upper applique, starboard
115ESL70D, 25R70C, 40E70A, 40ES70A, 60ES70B, 85ESL70B
0319714
 
0319714 PLATE,Handle support
25E74M, 25E75B, 25E76E, 25E77S, 25E78C, 25E79R, 35E76G, 35E77C, 35E78R, 35E79A, 40E74S, 40E75C, 40E76A, J25RCSA, J35ECIG, J35ECSM
0320842
PLATE,Throttle control
0320842 PLATE,Throttle control
10E77A, 10E78M, 10EL79B, 15E76A, 15E77M, 15E78B, 15E79E, 25E77S, 25E78C, 25E79R, 35E76G, 35E77C, 35E78R, 35E79A, J10ECSE, J10ELCID, J10ELCRA, J10ELCTC, J15ECIS, J15ECRM, J15ECSD, J15ECTR, J55RLCSA, J60ECSR
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