94976 Mercruiser GASKET, FLYWHEEL HOUSING COVER

Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.
The engine software files are listed in the table below
Table 1
Existing Part Number New Part Number Description
525-3887 570-6886 Engine Software
523-6348 570-3572 Engine Software
523-6315 570-4023 Engine Software
523-7396 570-2343 Engine Software
528-0244 570-7895 Engine Software
523-0145 570-1590 Engine Software
523-6316 569-2586 Engine Software
523-7399 570-3326 Engine Software
525-3888 570-6874 Engine Software
523-6347 570-3570 Engine Software
523-6313 570-3289 Engine Software
478-9989 570-6867 Engine Software
523-6314 570-3571 Engine Software
523-7909 570-7886 Engine Software
523-7297 570-3573 Engine Software
523-7397 570-7896 Engine Software
523-6345 570-3574 Engine Software
525-3885 570-6866 Engine Software
523-6318 570-3290 Engine Software
523-7398 570-6873 Engine Software
523-6340 570-3327 Engine Software
523-6342 570-1589 Engine Software
523-7395 570-6864 Engine Software
523-6344 570-3325 Engine Software
479-0015 570-6865 Engine Software
525-1919 570-4024 Engine Software
523-1995 542-1110 Engine Software Refer to Troubleshooting, ECM Software - Install for the correct procedure to install the new software.Service Tool Requirement
A Caterpillar® Electronic Technician (ET) service tool 2018B or later will be required.Changes Implemented in the Engine Software
Electronic unit injector diagnostic robustness improvements.The issue is that the existing software could cause the Electronic Control Module (ECM) to generate one or more electronic unit injector solenoid current above normal fault codes. The codes generated may be J1939 Codes 651-6, 652-6, 653-6, and 654-6. Also, CDL Codes 1-6, 2-6, 3-6, and 4-6. The fault codes can lead to an engine de-rate, in addition to difficulties to start the engine.The resolution is the improvements to the electronic unit injector diagnostic robustness.
EGR sensor code robustness improvements.The issue is the EGR differential pressure signal may have a problem in range if the 5V supply to the sensor is lost, causing the signal to ‘flat-line’ in the range of approximately 3.3V. This fault can lead to false detection under some operating conditions when the pressure pulsation becomes very small. The fault codes displayed may be J1939 Code 411-2, and CDL Code 3387-2.The resolution is the improvements to the EGR differential pressure diagnostic, adding more robustness to the trigger condition and the implementation of a voltage standard deviation check.
Diagnostic and robustness improvements to low DEF level events.The issue is that in certain instances, the reported DEF level on key-on was incorrect. In other circumstances where the DEF was frozen, an incorrect DEF level was indicated after key-on and before system prime. This incorrect DEF level indication could result in a Level 3 inducement. In a few cases this inducement could not be cleared until the DEF had been fully thawed.The resolution is the improvements to the key-on and DEF thaw diagnostic.
Robustness improvements to J1939 Network #3 Abnormal Update Rate.The issue is that the existing software could see J1939 Network #3 Abnormal Update Rate fault code 1235-9 (5856-9)occurring that would self-heal in a short time frame.The resolution is the improvements to the diagnostic of the fault delay time.