866390 Mercruiser GASKET, Collector, Exhaust


866390 GASKET, Collector, Exhaust Mercruiser 4S420P8UE GASKET
866390 GASKET, Collector, Exhaust Mercruiser
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Buy GASKET, Collector, Exhaust 866390 Mercruiser genuine, new aftermarket parts with delivery
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Compatible models:

4S420P8UE   Mercruiser

Mercruiser entire parts catalog list:

Information:


Illustration 1 g01246573
Schematic diagram for the electrical power supplyTest Step 1. Inspect the Electrical Connectors and the Wiring
Remove the electrical power from the ECM.
Illustration 2 g01208154
Typical left side view (1) J1/P1 ECM connectors
Illustration 3 g01246587
P1 terminals that are associated with the electrical power supply (P1-52) +Battery (P1-53) +Battery (P1-55) +Battery (P1-61) −Battery (P1-63) −Battery (P1-65) −Battery (P1-70) Keyswitch
Thoroughly inspect connectors (1) and (2). Inspect the connections for the battery and the connections to the keyswitch. Refer to the diagnostic functional test Troubleshooting, "Electrical Connectors - Inspect".
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the electrical power supply.
Check the allen head screw on each ECM connector for the proper torque. Refer to the diagnostic functional test Troubleshooting, "Electrical Connectors - Inspect".
Check the harness and wiring for abrasions and for pinch points from the battery to the ECM. Also, check the harness and wiring for abrasions and for pinch points from the keyswitch to the ECM.Expected Result:All connectors, pins, and sockets are completely coupled and/or inserted, and the harness and wiring are free of corrosion, of abrasion and of pinch points.Results:
OK - The connectors and wiring are OK. Proceed to Test Step 2.
Not OK - There is a problem with the connectors 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.STOPTest Step 2. Check the Battery Voltage at the ECM
Disconnect the J1/P1 ECM connector.
Restore the electrical power to the ECM.
Measure the voltage between P1-52 (Unswitched Positive Battery) and P1-61 (Negative Battery).
Measure the voltage between P1-53 (Unswitched Positive Battery) and P1-63 (Negative Battery).
Measure the voltage between P1-55 (Unswitched Positive Battery) and P1-65 (Negative Battery).
Measure the voltage between P1-70 (Keyswitch) and P1-63 (Negative Battery).Expected Result:The measured voltage is between 11.0 VDC and 13.5 VDC for a 12 volt system and between 22.0 VDC and 27.0 VDC for a 24 volt system with no suspected intermittent problems at this time.Results:
OK - The ECM is receiving the correct voltage. Repair: If an intermittent condition is suspected, refer to diagnostic functional tests Troubleshooting, "Electrical Connectors - Inspect".STOP
Battery voltage is out of range - Proceed to Test Step 3.
Keyswitch voltage out of range - Repair: Trace the wiring for the keyswitch from the ECM through the keyswitch circuit to the batteries. Find the problem and repair the problem. Check the circuit protection for the circuit and for the wiring.Verify that the repairs eliminate the problem.STOPTest Step 3. Check the Batteries
Measure the no-load battery voltage at the battery posts.
Load test the batteries. Use the 4C-4911 Battery Load Tester. Refer to Special Instruction, SEHS9249, "Use of 4C-4911 Battery Load Tester for 6, 8 and 12 Volt Lead Acid Batteries" and Special Instruction, SEHS7633, "Battery Test Procedure".Expected Result:The batteries pass the load test. The measured voltage is the minimum specification for a 12V or 24V system.Results:
OK - The batteries are OK.Repair: Check the wiring between the batteries and the ECM for shorts.Check the connectors between the batteries and the ECM for moisture and/or corrosion.Repair the wiring and/or the connectors.Verify that the repair eliminates the problem.STOP
Not OK - The battery voltage is low or the battery did not pass the load test.Repair: Recharge or replace the faulty batteries. Verify that the repair eliminates the problem.STOP


Parts gasket Mercruiser:

881604
 
881604 GASKET, Front Cover
4S42028N1, 4S42028TS, 4S42028TT, 4S42028UT, 4S42028UU, 4S420P8UE
891716
GASKET, Heat Exchanger Cover
891716 GASKET, Heat Exchanger Cover
4S42028N1, 4S42028TS, 4S42028TT, 4S42028UT, 4S42028UU, 4S420P8UE
881631
 
881631 GASKET, Cylinder Head
4S42028N1, 4S42028TS, 4S42028TT, 4S42028UT, 4S42028UU, 4S420P8UE
881620001
 
881620001 GASKET, Cylinder Head to Crossover
4S42028N1, 4S42028TS, 4S42028TT, 4S42028UT, 4S42028UU, 4S420P8UE
879150064
 
879150064 GASKET, Cylinder Head
4S42028N1, 4S42028TS, 4S42028TT, 4S42028UT, 4S42028UU, 4S420P8UE
881603001
 
881603001 GASKET
4S42028N1, 4S42028TS, 4S42028TT, 4S42028UT, 4S42028UU, 4S420P8UE
881612
 
881612 GASKET, Oil Pan
4S42028N1, 4S42028TS, 4S42028TT, 4S42028UT, 4S42028UU, 4S420P8UE
895235
 
895235 GASKET SET, Intake Manifold and Valley
4S42028N1, 4S42028TS, 4S42028TT, 4S42028UT, 4S42028UU, 4S420P8UE
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