Woodward Marine
Governor & Actuator Parts
Engine-room Woodward governor, actuator and digital control spare parts for diesel, dual-fuel and gas engines, and for turbines.
The Woodward equipment behind most engine-room enquiries
Woodward Inc. is a US manufacturer of governors, actuators and engine control systems, and its equipment has a long history in the engine room: mechanical-hydraulic UG governors on older diesel and steam-turbine drives, electronic actuators retrofitted onto that same hardware, and digital control systems on more recent propulsion and genset installations. Vessel Core supplies purchasing teams, superintendents, marine engineers, repair yards and maritime agents with spare parts across that range, from classic governors still carried as ship spares through to digital engine and genset control on more recent tonnage.
UG-8, UG-10, UG-15 and UG-25 Universal Governors
Mechanical-hydraulic governors that Woodward builds for diesel, gas and dual-fuel engines and for steam turbines, linked to the fuel racks or fuel valves. The UG normally runs isochronous, and on the UG Dial droop is a knob on the dial panel rather than a separate model, so the speed-setting version (Dial, for example) and the part number on the nameplate say more than the mode does. The driven machine still matters as much as the governor designation itself.
3161 Governor
A mechanical-hydraulic governor for diesel and dual-fuel engines and steam turbines. Woodward builds it as an isochronous governor that can run in droop by setting an internal pivot pin, with the speed set by a lever or by a remote device, so the speed-setting arrangement is worth photographing along with the nameplate.
EG-3P and EG-3PC proportional actuators
Proportional actuators driven from an electronic speed control. They are frequently the retrofit half of an installation whose governor body is decades older, so the actuator and the control it answers to are worth naming together.
EGB actuators and the UG-Actuator retrofit unit
EGB actuators, and the UG-Actuator retrofit unit with its own self-contained oil sump. Both appear as the driven element under a 2301A or 2301D control, and both are also requested as standalone spares.
PGA-EG and PGG-EG governor bodies
Governor bodies from Woodward's PG family combined with electronic control. On the PGA governor the speed setting comes from an air signal through a direct- or reverse-acting bellows, the drive is built for clockwise, counter-clockwise or reversible rotation, and shutdown devices, a booster servomotor and fuel limiters are fitted as options — so all of these, and any backup arrangement, belong on the enquiry.
2301A and 2301D Load Sharing and Speed Controls
Load Sharing and Speed Control systems for generator sets that share load. Woodward lists the 2301A as driving its EG, EGB, PB, TM and 2301 actuators and builds it in low- and high-voltage, forward- and reverse-acting models and several speed ranges, so the part number on the enclosure nameplate matters more than the model name. The control and the actuator are separate items commercially, but they identify each other technically.
723 Plus Digital Control
A programmable digital control on a single circuit board in a sheet-metal chassis, built as low- and high-voltage hardware and carrying class approvals for marine use. Because the same hardware is programmed for each application, the hardware part number from the nameplate and the application software both identify the unit, and the actuator it drives is named alongside.
ProAct Digital and Digital Plus, and LECM modules
ProAct units are electric actuators, not controllers: Woodward builds them with limited-angle-torque motors and an on-board digital driver, and they position the fuel rack or throttle on a demand signal from the outside control system, with no hydraulic oil. The engine-mounted controllers here are the LECM modules, which Woodward lists for marine propulsion and power generation with validated application software for gas, diesel or dual-fuel engines.
easYgen 2000, 3000 and 3200XT controllers
Paralleling and load-sharing controllers for genset switchboards. On these units the switchboard arrangement is part of the request, since the controller is identified by what it parallels as much as by its own type.
Woodward items that appear on RFQ lines
Supply coverage spans classic mechanical-hydraulic governors still carried as ship spares through to digital engine and genset control systems on more recent tonnage. Complete units, standalone actuators and the wear items around them are quoted as separate lines, so the ship can decide what to change now and what to carry as a running spare. On a generating set, the motor speed calculator relates the engine speed the governor holds to the supply frequency through the pole count of the alternator.
- Complete governor units — UG-8, UG-10, UG-15, UG-25 and 3161
- Actuators as standalone spares — EG-3P, EG-3PC and EGB
- UG-Actuator retrofit units with self-contained oil sump
- PGA-EG and PGG-EG governor bodies with electronic control
- Pneumatic backup tracking arrangements on PGA-EG and PGG-EG bodies
- 2301A and 2301D Load Sharing and Speed Control units
- 2301A controls by part number: low- or high-voltage, forward- or reverse-acting
- 723 Plus Digital Control units
- 723 Plus hardware by part number, with the application software identified
- ProAct electric actuators with integral driver electronics
- LECM engine control modules with validated application software
- easYgen 2000, 3000 and 3200XT paralleling controllers
- Speed pickups and magnetic speed sensors
- Wiring harnesses as running consumables
What a Woodward spare-parts request covers, family by family
A request for Woodward spare parts can mean three different kinds of hardware, each written as a different kind of line. The first question on any enquiry is which kind the item is: a mechanical-hydraulic governor, an electronic control, or the actuator between the control and the fuel rack.
The governor as a complete machine
Inside a mechanical-hydraulic governor, flyweights on a ballhead driven from the engine work against a speeder spring and move a pilot valve; the valve sends pressure oil from a gear pump to a power piston, and a compensation system adjusted by a needle valve damps each correction. The request is either the complete governor or named internal items: flyweight assembly, speeder spring, pilot valve parts, oil pump gears, drive coupling, terminal shaft seal or the gasket and O-ring set, each written against the governor part number and serial number.
The control that reads speed and sends a signal
An electronic speed control never touches the fuel linkage. It reads engine speed from a magnetic pickup, usually set over the flywheel teeth, and sends a current signal to the actuator; a 2301A that loses the pickup signal drives its actuator to minimum fuel. The control is quoted as one unit by its nameplate part number, and the pickup, actuator and wiring each go on a line of their own.
The actuator between signal and fuel rack
The actuator turns the control's signal into movement of the fuel rack. An EGB is two devices in one body: an electric actuator with a mechanical governor behind it that can take over speed control if the electronic signal is lost, so state whether the whole unit or a part of the backup section is needed.
Genset control panel — general arrangement
A licensed photograph of Woodward equipment was not available at publication, so this technical reference illustrates the general arrangement shared by this equipment class.
Illustrative technical reference, not a photograph of Woodward equipment or a Vessel Core installed reference — a licensed photo was not available. Vessel Core has no dealership, distribution or partnership agreement with the manufacturer named; it operates as an independent spare parts supplier.
Turning a governor nameplate into a quotable line
Part numbers are helpful but not always available on older mechanical-hydraulic governors. A nameplate photo, the driven engine or turbine data and a photo of the linkage or actuator can be enough to begin technical cross-checking before supply routes are reviewed. The list below is what makes a Woodward enquiry answerable without a second round of questions.
- Governor or actuator type designation, in full
- Serial number from the governor or actuator nameplate
- Driven engine or turbine make and model
- Drive rotation and speed-setting arrangement: clockwise, counter-clockwise or reversible; dial, lever or air signal; and any synchronizer motor or shutdown solenoid fitted
- The Woodward part number from the nameplate (on electronic controls in XXXX-XXX or XXXX-XXXX form), with description and quantity — Woodward's own manuals ask for the nameplate part number and serial number together when parts are ordered
- OEM route, alternative route or both
- Nameplate photographed square-on
- Photographs of the linkage and mounting arrangement
- Photographs of the control cabinet and wiring
- Vessel name / IMO and company name
- Urgency level, port and ETA
- Excel list where several lines are requested
Quoting by Woodward part number
Many Woodward enquiries begin with nothing but a number. A Woodward part number is normally written as four digits, a dash and three or four further digits, and it names one specific build: the same model name covers several part numbers, while the serial number belongs to the single unit on board. When a product changes significantly, Woodward issues a new part number; smaller changes move only the revision letter shown with it.
- The part number copied exactly as stamped, with any letters before or after the digits and the revision letter beside it
- The serial number as a separate field: it identifies the individual unit and is asked for together with the part number, not instead of it
- The publication number on the cover of any manual on board, such as 03040 or 82340, which identifies the document rather than the governor and is given in addition to the plate data
- Without a plate: the page of the engine builder's parts catalogue that lists the governor, the engine make, model and serial number, and photographs of the speed-setting side, the drive and the output shaft
- For a model no longer built: whether new surplus, unused or reconditioned units are acceptable — independent resellers still trade older Woodward units in these conditions, and the condition is stated on every quoted line
- Converting a mechanical-hydraulic governor to an electronic control and actuator is an engineering decision on the engine, not a like-for-like spare; the items are quoted once the ship or its engineers have named them
A governor is quoted against the engine it controls, not against a shelf code.
A Woodward item rarely stands on its own. The same actuator appears under different control systems, and the same control system drives more than one actuator, so the request has to describe an installed arrangement rather than a single code. What follows is how that fact — and the age spread from mechanical-hydraulic governors to digital control modules — changes the questions asked before any Woodward item is quoted.
A part number is welcome, not required
The request can include a complete part number, or it can start from the governor or actuator type designation, the serial number, the driven engine or turbine make and model, or photographs of the nameplate and mounting arrangement.
Control and actuator identified together
A 2301A or 2301D speed and load control is typically installed with an actuator such as an EGB or a UG-Actuator, and a 723 Plus digital control is used with its own compatible actuator. Naming both, or photographing the control cabinet and the actuator nameplate together, avoids a mismatched quotation.
Driven engine stated with the governor
The best Woodward RFQs connect the part to the driven engine. The engine or turbine make and model is asked for alongside the governor reference, because the same governor family is fitted to machines of very different size and duty.
Isochronous or droop confirmed
Where it is relevant, the operating mode is confirmed with the type designation. On a UG Dial governor droop is set with a knob on the dial panel, and on a 3161 with an internal pivot pin, so the mode is a setting rather than a different model: the nameplate part number is what separates one unit from another, and the mode is recorded so the replacement can be set up the same way.
Evidence structured before routing
Governor or actuator nameplate, serial number, driven engine data, photographs, port and ETA are taken in as one intake. The request context is structured before supplier routing or quotation work begins.
OEM route or verified alternative
An OEM route or a verified alternative route can be reviewed where appropriate. The commercial request is then prepared for clearer supplier review and buyer reply, with urgency, port and ETA carried on the line.
Woodward RFQ enquiries — recurring questions
What information is needed to quote a Woodward governor or actuator?
Useful information includes the governor or actuator type designation (for example UG-8, UG-10, UG-15, UG-25, 3161, EG-3P, EGB, PGA-EG or PGG-EG), the serial number, the driven engine or turbine make and model, isochronous or droop mode where relevant, and photographs of the nameplate and mounting arrangement. Vessel/IMO, urgency, port and ETA help route the request.
Can a Woodward governor be identified from photographs alone?
Often yes. Clear photographs of the nameplate, the model and serial number, the linkage or actuator arm, and the mating engine or turbine data are usually enough to begin identification. On the mechanical-hydraulic UG series and the 3161 governor the nameplate carries the Woodward part number and serial number, the two items Woodward's own manuals ask for when parts are ordered.
Do 2301 or 723 Plus digital controls need to be quoted together with an actuator?
Not necessarily, but the pairing matters for identification. A 2301A or 2301D speed and load control is typically installed with an actuator such as an EGB or a UG-Actuator, and a 723 Plus digital control is used with its own compatible actuator. Stating both the control model and the actuator model, or sending photographs of the control cabinet and the actuator nameplate together, avoids a mismatched quotation.
Does it matter whether our UG governor runs isochronous or droop?
Less than the nameplate does. The UG normally runs isochronous, and on the UG Dial droop is a knob on the dial panel rather than a separate model, so the speed-setting version, Dial for example, and the part number on the nameplate say more than the mode. Send both with the serial number and the speed-setting arrangement, and name the engine or turbine the governor drives, since the driven machine matters as much as the governor designation.
Can an easYgen controller be quoted from its type alone?
Not reliably. The easYgen 2000, 3000 and 3200XT are paralleling and load-sharing controllers for genset switchboards, and a controller is identified by what it parallels as much as by its own type. Describe the switchboard arrangement and the generating sets the controller works with, and send photographs of the controller and the control cabinet it is fitted in.
Can parts still be found for a Woodward governor that is no longer built?
Often, though the route changes. Older Woodward governors, actuators and controls are still traded by independent resellers as new surplus, unused or reconditioned units, so the enquiry can continue after a model leaves production. Every such offer is quoted with its condition stated, and the request should say which conditions the ship accepts. The nameplate part number and serial number remain the basis of the search; without them the line is matched from photographs and the driven engine data.
Should we order a gasket and seal set or a complete governor?
That is the ship's decision, and both can be priced on the same enquiry. Internal items for a mechanical-hydraulic governor, such as the gasket and O-ring set, the terminal shaft seal, the speeder spring or the oil pump gears, are quoted as separate lines against the governor part number and serial number; the complete governor is quoted as a line of its own. Vessel Core supplies parts only and does not repair, overhaul, calibrate or set up governors, so fitting and adjustment remain with the ship's engineers or a workshop chosen by the owner.
Can a Woodward item be quoted from the part number alone?
Yes, as a start. A Woodward part number, usually four digits, a dash and three or four more, points to one specific build, so it is enough to begin the search when it is copied exactly, with any letters and the revision letter beside it. Send a photograph of the plate it came from and the serial number as well: the part number says what the unit is, the serial number says which unit it is, and the photograph settles any doubt about a misread digit or letter. Each number is checked before a line is quoted against it.
Is Vessel Core connected to Woodward?
No, and there is no agreement of any kind. Vessel Core is independent of Woodward Inc. Woodward names and model designations are used on this page only to help identify equipment already installed on board, so that a spare-parts request can be structured and routed for quotation; naming this equipment implies no representation, distribution or partnership arrangement, and no endorsement by the manufacturer.
Send the nameplate and the driven engine data.
Send the governor or actuator type designation, serial number, driven engine or turbine data, part number or description, quantity and port/ETA. If part numbers are missing, send photographs of the nameplate, linkage and control cabinet, or an Excel list, directly to sales@vesselcore.eu.
