1786571 GASKET Caterpillar parts
311C, 312C, 312C L, 314C, 318C, 319C, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LRR, 320D RR, 321C, 321D LCR, 323D L, 323D LN
Rating:
Alternative (cross code) number:
CA1786571
178-6571
1786571
CA1786571
178-6571
1786571
Weight: 0.01 pounds 0 kg.
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$48.49
14 Aug 2023
US: WITHOUTHAMHEP
Replacement for Compatible with 1786571 Gasket Fits Caterpillar Models
PINOM
PINOM
$48.49
05 Apr 2023
US: WITHOUTHAMHEP
Replacement For Compatible With 1786571 Gasket Fits Caterpillar Models
PINOM
PINOM
$14.50
02 Jul 2022
US: # 1 Quality Par
Aftermarket replacement 1786571 Cat Copper Gasket
Generic P003838, 1786571, M-1786571, Cat Copper Gasket, Cat, Copper, Gasket 1786571, Cat
Generic P003838, 1786571, M-1786571, Cat Copper Gasket, Cat, Copper, Gasket 1786571, Cat
Number on catalog scheme:
27
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Compatible equipment models: 1786571:
Information:
System Operation Description:Use this procedure to troubleshoot the system when one of the following diagnostic codes is active or easily repeated:
212-03 5 Volt Sensor Supply #1 voltage high
212-04 5 Volt Sensor Supply #1 voltage low
232-03 5 Volt Supply voltage high
232-04 5 Volt Supply voltage lowAlso, use this procedure to troubleshoot the system when you have been directed here by another troubleshooting procedure.The following background information is related to this procedure:The Engine Control Module (ECM) supplies the following sensors with regulated 5 VDC:
Atmospheric pressure sensor
Boost pressure sensor
Engine oil pressure sensor
Oil pressure sensor for the intake valve actuatorThe supply for the +5 V engine pressure sensor is routed from the ECM to terminal A of each pressure sensor connector. The supply voltage is 5.0 0.16 VDC.The +5 V diagnostic code is probably caused by a short circuit to ground or a short circuit to another voltage source in the harness.
Illustration 1 g00970385
Schematic
Illustration 2 g00970387
P2 ECM connector
Illustration 3 g00810608
Sensor connectorTest Step 1. Disconnect the ECM Connector and Check for Active Diagnostic Codes
Turn the keyswitch to the OFF position.
Connect the Caterpillar Electronic Technician (Cat ET) to the data link connector.
Disconnect the P2 ECM connector from the ECM.
Check the ECM connector for corrosion and moisture.
Turn the keyswitch to the ON position.
Check for active diagnostic codes on Cat ET.Note: A "voltage high" diagnostic code (open circuit) should be active for all of the engine pressure sensors.Expected Result:The 5 volt diagnostic codes are not active. A "voltage high" diagnostic code (open circuit) is active for all of the engine pressure sensors.Results:
OK - The 5 volt diagnostic codes are not active.Repair: Reconnect the P2 ECM connector. Proceed to Test Step 2.
Not OK - The 5 volt diagnostic codes are still active.Repair: Connect a test ECM.If the test ECM fixes the problem, reconnect the suspect ECM.If the problem returns, permanently install the new ECM.Verify that the repair eliminates the problem.STOPTest Step 2. Disconnect the Sensors
Turn the keyswitch to the ON position.
Monitor the active diagnostic code screen on Cat ET.
Disconnect the pressure sensors one at a time. Wait for 30 seconds after each pressure sensor is disconnected.Note: The 5 volt diagnostic code will become inactive if a pressure sensor is the cause of the 5 volt diagnostic code.
Ensure that all of the pressure sensors are disconnected.Expected Result:The 5 volt diagnostic code is still active when all of the pressure sensors are disconnected.Results:
OK - The 5 volt diagnostic code is still active.Repair: Leave all of the pressure sensors disconnected. Proceed to Test Step 4.
Not OK - The 5 volt diagnostic code disappears when the pressure sensors are disconnected. Repair: Reconnect all of the pressure sensors except the suspect sensor. Proceed to Test Step 3.Test Step 3. Check the Signal Wire
Turn the keyswitch to the ON position.Note: The suspect sensor should be disconnected.
Measure the voltage between terminal C (Signal) and terminal B (Pressure Sensor Common) of the connector for the suspect sensor on the engine harness.Expected Result:The voltage is less than 7.0 VDC.Results:
OK - The voltage is within the range.Repair: Temporarily connect
212-03 5 Volt Sensor Supply #1 voltage high
212-04 5 Volt Sensor Supply #1 voltage low
232-03 5 Volt Supply voltage high
232-04 5 Volt Supply voltage lowAlso, use this procedure to troubleshoot the system when you have been directed here by another troubleshooting procedure.The following background information is related to this procedure:The Engine Control Module (ECM) supplies the following sensors with regulated 5 VDC:
Atmospheric pressure sensor
Boost pressure sensor
Engine oil pressure sensor
Oil pressure sensor for the intake valve actuatorThe supply for the +5 V engine pressure sensor is routed from the ECM to terminal A of each pressure sensor connector. The supply voltage is 5.0 0.16 VDC.The +5 V diagnostic code is probably caused by a short circuit to ground or a short circuit to another voltage source in the harness.
Illustration 1 g00970385
Schematic
Illustration 2 g00970387
P2 ECM connector
Illustration 3 g00810608
Sensor connectorTest Step 1. Disconnect the ECM Connector and Check for Active Diagnostic Codes
Turn the keyswitch to the OFF position.
Connect the Caterpillar Electronic Technician (Cat ET) to the data link connector.
Disconnect the P2 ECM connector from the ECM.
Check the ECM connector for corrosion and moisture.
Turn the keyswitch to the ON position.
Check for active diagnostic codes on Cat ET.Note: A "voltage high" diagnostic code (open circuit) should be active for all of the engine pressure sensors.Expected Result:The 5 volt diagnostic codes are not active. A "voltage high" diagnostic code (open circuit) is active for all of the engine pressure sensors.Results:
OK - The 5 volt diagnostic codes are not active.Repair: Reconnect the P2 ECM connector. Proceed to Test Step 2.
Not OK - The 5 volt diagnostic codes are still active.Repair: Connect a test ECM.If the test ECM fixes the problem, reconnect the suspect ECM.If the problem returns, permanently install the new ECM.Verify that the repair eliminates the problem.STOPTest Step 2. Disconnect the Sensors
Turn the keyswitch to the ON position.
Monitor the active diagnostic code screen on Cat ET.
Disconnect the pressure sensors one at a time. Wait for 30 seconds after each pressure sensor is disconnected.Note: The 5 volt diagnostic code will become inactive if a pressure sensor is the cause of the 5 volt diagnostic code.
Ensure that all of the pressure sensors are disconnected.Expected Result:The 5 volt diagnostic code is still active when all of the pressure sensors are disconnected.Results:
OK - The 5 volt diagnostic code is still active.Repair: Leave all of the pressure sensors disconnected. Proceed to Test Step 4.
Not OK - The 5 volt diagnostic code disappears when the pressure sensors are disconnected. Repair: Reconnect all of the pressure sensors except the suspect sensor. Proceed to Test Step 3.Test Step 3. Check the Signal Wire
Turn the keyswitch to the ON position.Note: The suspect sensor should be disconnected.
Measure the voltage between terminal C (Signal) and terminal B (Pressure Sensor Common) of the connector for the suspect sensor on the engine harness.Expected Result:The voltage is less than 7.0 VDC.Results:
OK - The voltage is within the range.Repair: Temporarily connect
Cat SIS web machinery list:
Parts gasket Caterpillar catalog:
311D LRR, 312D, 312D L, 313D, 314D CR, 314D LCR, 315D L, 318D L, 319D, 319D L, 319D LN, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 321D LCR, 323D L, 323D LN, 323D SA
311D LRR, 312D, 312D L, 313D, 314D CR, 314D LCR, 315D L, 318D L, 319D, 319D L, 319D LN, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 321D LCR, 323D L, 323D LN, 323D SA
311D LRR, 312D, 312D L, 313D, 314D CR, 314D LCR, 315D L, 318D L, 319D, 319D L, 319D LN, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 321D LCR, 323D L, 323D LN, 323D SA
311D LRR, 312D, 312D L, 314D CR, 314D LCR, 315D L, 319D, 319D L, 319D LN, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 321D LCR, 323D L, 323D LN, 323D SA
320B, 320C, 320C FM, 320N
320C
320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 321D LCR, 323D L, 323D LN, 323D SA
320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 321D LCR, 323D L, 323D LN, 323D SA
320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 321D LCR, 323D L, 323D LN, 323D SA
320D, 320D FM, 320D GC, 320D L, 320D LN, 323D L, 323D LN, 323D SA
320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 321D LCR, 323D L, 323D LN, 323D SA
320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 321D LCR, 323D L, 323D LN, 323D SA
311B, 311C, 312B, 312C, 312C L, 314C, 318C, 319C, 320B, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LRR, 320D RR, 321C, 321D LCR, 323D L, 323D LN
311B, 311C, 312B, 312C, 312C L, 314C
311, 311B, 311C, 311D LRR, 312, 312B, 312C, 312C L, 312D, 312D L, 313D, 314C, 314D CR, 314D LCR, 315D L, 318D L, 319D, 319D L, 319D LN
311C, 311D LRR, 312C, 312C L, 312D, 312D L, 313D, 314C, 314D CR, 314D LCR, 315D L, 318C, 318D L, 319C, 319D, 319D L, 319D LN, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN...
311, 311B, 311C, 312, 312B, 312C, 312C L, 314C, 318C, 319C, 320, 320 L, 320B, 320B FM LL, 320C, 320C FM, 320C L, 320D, 320D LRR, 320N, 321C, 323D L, 323D LN
311, 311B, 311C, 312, 312B, 312C, 312C L, 314C, 318C, 319C, 320, 320 L, 320B, 320B FM LL, 320C, 320C FM, 320C L, 320D, 320D LRR, 320N, 321C, 323D L, 323D LN
311C, 312B, 312C, 312C L, 314C
311, 311B, 311C, 312, 312B, 312C, 312C L, 314C
311, 311B, 311C, 311D LRR, 312, 312B, 312C, 312C L, 312D, 312D L, 313D, 314C, 314D CR, 314D LCR, 315D L, 318C, 318D L, 319C, 319D, 319D L, 319D LN, 320 L, 320B, 320B L, 320C, 320C FM, 320C L, 320D, 32...
311, 311B, 311C, 312, 312B, 312C, 312C L, 314C, 318C, 319C, 320 L, 320B, 320B FM LL, 320B L, 320C, 320C FM, 320C L, 320D, 320D LRR, 320N, 321B, 321C, 323D L, 323D LN
311, 311B, 311C, 311D LRR, 312, 312B, 312C, 312C L, 312D, 312D L, 313D, 314C, 314D CR, 314D LCR, 315D L, 318D L, 319D, 319D L, 319D LN
311, 311B, 311C, 311D LRR, 312, 312B, 312C, 312C L, 312D, 312D L, 313D, 314C, 314D CR, 314D LCR, 315D L, 318C, 318D L, 319C, 319D, 319D L, 319D LN, 320 L, 320B, 320C, 320C FM, 320C L, 320D, 320D FM, 3...