Description
Product Introduction & Engineering Value
The MAN B&W 3157167-5 is a specialized marine automation control module rather than a conventional standalone PLC card. Supplier records identify it as an MCU Module / Master Control Unit, with P.D. No. 15.0009.0 and a commonly documented Rev. 1.4 marking.
One important detail stands out: the part number appears with several related identification markings, including MCU-0230-F, 1142352-0, MCU Ver. 7, and different COI/document revisions. For a replacement, those markings should be compared with the removed board rather than relying on 3157167-5 alone.
Technical Specifications
- Manufacturer: MAN B&W / MAN Diesel
- Part Number: 3157167-5
- Module Designation: MCU Module
- Functional Designation: Master Control Unit
- P.D. Number: 15.0009.0
- MCU Assembly: MCU-0230-F
- Associated PCB Number: 1142352-0
- MCU Firmware/Version Marking: Ver. 7
- Document Revision: 14.0230.0 appears in supplier identification records
- PCB Revision: Rev. 1.2 is associated with the 1142352-0 PCB
- Module Revision: Rev. 1.4 is documented for 3157167-5
- Approximate Listed Weight: 3.3–3.37 kg depending on the specific assembly/listing
Identification cross-reference
| Marking | Reported association |
|---|---|
| 3157167-5 | MBD / main part number |
| 15.0009.0 | P.D. number |
| MCU-0230-F | MCU assembly designation |
| 1142352-0 | PCB number |
| MCU Ver. 7 | MCU version |
| Rev. 1.4 | Module revision reported by suppliers |
| Rev. 1.2 | PCB/document revision appearing with 1142352-0 |
Do not infer electrical specifications from generic MCU terminology. Public supplier records do not provide sufficiently reliable information for this exact assembly’s supply voltage, current consumption, I/O count, communication interfaces, or pin assignments. Those values should be taken from the applicable MAN documentation or the original installed unit.
3157167-5
Field Application & the “Trench” Experience
Consider a vessel undergoing a scheduled engine-control overhaul. The maintenance team discovers that its installed MAN B&W Master Control Unit is showing intermittent faults. The spare cabinet contains a 3157167-5, but the board has several markings beyond the main part number.
The technician records 3157167-5 → 15.0009.0 → MCU-0230-F → 1142352-0 → MCU Ver. 7 before removing the original. That is the right approach. The assembly is not identified by one number alone.
A supplier listing for the same part family even shows different COI markings and revisions, including 632-A, 579-A, Rev. 1.4, and Rev. 1.2. That is exactly why revision control matters when sourcing legacy marine electronics.
Specific application scenarios
- Main-engine control cabinet maintenance — replacement of a failed MCU assembly during planned engine automation work.
- Alpha Lubricator control equipment — one current supplier specifically identifies 3157167-5 as an Alpha Lubricator MCU PCB, making application verification particularly important before ordering.
- Marine automation spare inventory — retaining a verified 3157167-5 assembly as a contingency spare for vessels using the corresponding MAN B&W control architecture.
Transparency SOP: QA & Testing
For New Surplus or refurbished 3157167-5 inventory, the inspection should be traceable.
1. Identity check
Verify the main part number and photograph every visible identification label.
2. Revision check
Record the module revision, PCB revision, COI marking, MCU version, and any secondary part numbers.
3. Physical inspection
Check PCB condition, connectors, solder joints, component damage, corrosion, contamination, and evidence of previous repair.
4. Electrical testing
Where appropriate documentation and a suitable test fixture are available, perform controlled electrical checks against the specified operating conditions.
5. Functional verification
A genuine functional test should reproduce relevant MCU operating conditions. A simple visual inspection or continuity check should not be described as a complete functional test.
6. Shipment record
Keep photographs and test records tied to the individual serial/identification markings.
Current secondary-market listings demonstrate that 3157167-5 is offered in both used and new-condition inventory, so procurement should obtain the exact condition and revision before issuing a purchase order.
The Veteran’s Tech Trap Guide
⚠️ Trap #1 — Ordering by 3157167-5 alone
The same main part number can appear with different secondary markings. One documented assembly includes MCU-0230-F, 1142352-0, MCU Ver. 7, COI 579-A, and Rev. 1.2, while another listing identifies Rev. 1.4 and COI 632-A. Compare the complete board markings.
⚠️ Trap #2 — Confusing the MCU module with the PCB number
3157167-5 and 1142352-0 are not simply interchangeable ways of naming the same number. Supplier records associate 1142352-0 with the PCB/MCU-0230-F assembly. Make sure the procurement specification states which physical assembly is required.
PRO TIP: Before removing the original MCU, photograph the board from both sides and capture every label. For legacy marine equipment, those secondary markings can determine whether a replacement is actually appropriate.
⚠️ Trap #3 — Assuming “new” means OEM-factory new
A marketplace designation of NEW does not necessarily establish current OEM production status or factory provenance. Ask for photographs of the actual unit, identification labels, storage condition, and warranty terms.
Dynamic FAQ
What is MAN B&W 3157167-5?
It is identified as a MAN B&W MCU Module / Master Control Unit used in marine automation applications. Supplier records associate the part with and PCB 1142352-0.
Is 3157167-5 the same as 1142352-0?
Not exactly. Available records identify 3157167-5 as the MBD/main module number, while 1142352-0 is associated with the PCB. Treat them as related identification numbers, not automatically interchangeable ordering numbers.
What MCU version is associated with this module?
Several records identify MCU Ver. 7 with the 3157167-5 / assembly.
Is Rev. 1.4 compatible with every 3157167-5?
Do not assume that. Rev. 1.4 is documented for the 3157167-5, but associated PCB/document revisions and COI markings can differ. Match the replacement against the installed assembly and applicable MAN documentation.
Can I buy this as New Surplus?
Yes, secondary-market suppliers currently list the part in new-condition inventory as well as used stock. However, New Surplus is a stock condition, not proof of current OEM manufacture. Request actual-unit photographs and traceability information before purchase.
What warranty should I request?
Get the warranty period and coverage in writing before purchase. For a marine control module, clarify whether the warranty covers DOA, functional failure after installation, and return testing, rather than accepting an unspecified “tested” claim.
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