MAN B&W 2-Stroke Engine Pneumatic Remote Control System Service

Systems Covered

MAN B&W 2-stroke diesel engines are fitted with pneumatic remote control systems across a wide range of vessel types, from bulk carriers and tankers to container vessels and general cargo ships. The pneumatic remote control system governs engine speed, direction of rotation, starting sequence, and fuel regulation. System architectures vary by engine series and build year, but the core pneumatic logic and component types are consistent across the MAN B&W range.

Field service covers all major MAN B&W 2-stroke engine series including the MC, MC-C, ME-series (where pneumatic control components remain), and legacy B&W designs. Component-level knowledge extends to the full pneumatic circuit from the bridge telegraph through to engine-side actuators.

• MAN B&W MC / MC-C engine pneumatic control systems
• Governor control unit (Woodward, Regulateurs Europa, Heinzmann)
• Pneumatic reversing servomotors
• Starting air valve assemblies and pilot valves
• Speed control and fuel regulator pneumatics
• Air supply systems, filters, and pressure regulators
• Bridge telegraph and engine telegraph interface components
• Fuel pump control actuators and pneumatic positioners

Scope of Work

All service work is carried out onboard, directly at the engine and control system components. No components are removed from the vessel for off-site repair unless specifically agreed in advance and logistically feasible. The scope below reflects the standard range of work performed during field service assignments:

• System-level fault diagnosis using OEM technical documentation and pressure gauging
• Governor control unit inspection, internal cleaning, and adjustment
• Reversing servomotor disassembly, seal replacement, and reassembly
• Starting air pilot valve overhaul and leak testing
• Fuel pump control actuator seal kit replacement and stroke verification
• Pneumatic positioner disassembly, inspection, and functional adjustment
• Air supply system inspection: filter replacement, pressure regulation verification
• Signal chain verification from telegraph system through to engine actuators
• Functional test of complete remote control system under engine operating conditions
• Documentation: pre-service condition report, work performed record, post-service test results

Typical Fault Conditions

The following fault conditions are frequently encountered on MAN B&W 2-stroke pneumatic remote control systems and fall within the scope of onboard field service:

Onboard Service Procedure

Each service assignment follows a structured procedure to ensure accurate diagnosis and complete resolution before the vessel departs port. The procedure is adapted to the time available and the nature of the fault:

1. Pre-service assessment: Review of vessel records, fault history, and crew-reported symptoms. Visual inspection of the control system and documentation of observed condition.
2. System pressure test: Air supply verification, circuit integrity check, identification of leak points or pressure anomalies.
3. Component-level diagnosis: Isolation and testing of individual components using OEM test parameters. Identification of defective parts and confirmation of fault root cause.
4. Repair or overhaul: Disassembly, cleaning, seal replacement, and reassembly of affected components. Replacement of worn or failed parts using appropriate seal kits or spare components.
5. Functional verification: Testing of repaired components and sub-systems under air pressure. Verification of correct stroke, response, and signal chain continuity.
6. Full system test: Complete functional test of the remote control system including forward and reverse commands, speed changes, and starting sequence where operationally feasible.
7. Documentation: Written service report covering pre-service condition, work performed, parts used, and post-service test results. Suitable for classification society and P&I requirements.

Availability & Mobilisation

Field service is available worldwide subject to visa requirements and travel logistics. The engineer is based in Poland with direct access to international travel connections, enabling mobilisation to major port regions in Europe, Asia, and the Middle East.

Planned service visits can typically be arranged with 3 to 7 days notice, subject to travel and visa requirements for the port in question. Port pass and pre-boarding documentation requirements are handled directly with the ship's agent or technical superintendent.

For scheduled drydock work, longer lead times allow for advance procurement of seal kits and replacement components specific to the engine and control system variant, reducing onboard time and ensuring all required materials are available.

Emergency Support

For MAN B&W main engine remote control failures where the vessel is detained or restricted from manoeuvring, emergency response is assessed on a case-by-case basis. Initial remote diagnostic support by telephone is available immediately at any time, helping the crew and chief engineer isolate the fault before the field engineer boards.

In emergency cases, the engineer can advise on temporary operational measures where safe to do so, pending mobilisation. All emergency support is documented and followed by a written summary of actions taken and remaining work required.