An Improved Screed Power Module (SPM) Is Now Used on Certain Asphalt Pavers {4822} Caterpillar

Asphalt Paver

AP1000F (S/N: AC41-247)

AP1055F (S/N: TJ51-446; RLM1-105)

AP500F (S/N: 4491-110)

AP555F (S/N: AP51-128; 5F51-101)

AP600F (S/N: AP61-131; LR61-105)

AP655F (S/N: 4801-102; 4523201-3201; 4531-101; P651-122; MH6101-196; ML61-108; 4791-113)

Description Of Change: An improved SPM is now used on certain machines listed above. The new SPM contains several updates resulting from improved manufacturing processes that will increase the durability and extend the service life of the SPM.

Adaptable To: The following changes are adaptable to the products within the listed serial numbers and are effective with all products after the listed serial numbers.

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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.

Reference: Troubleshooting, M0064686.

Reference: Disassembly and Assembly, UENR3148, "Inverter - Remove and Install".

Reference: Special Instruction, REHS9161, "Procedure to Properly Connect and Disconnect the High Voltage Connectors on "F" Series Asphalt Pavers".

To ensure the most accurate information, always refer to the most recent version of the referenced document(s) on SIS web.

If replacement of the SPM is necessary, make sure that the replacement part is the new 546-5499 Power Inverter Gp.

For more detailed diagnostic and replacement information, refer to the documents listed above.