Deutz 528 & 628 Marine Fuel Injection Pump Repair

Inspection, Overhaul, Calibration and Spare-Parts Support for Deutz Large Marine Diesel Engines

Deutz 528 and 628 engines remain in service in marine, stationary and heavy-duty applications where reliable mechanical fuel injection is essential. Einspritzpumpen Manufaktur NRW provides technical identification, complete mechanical overhaul, component assessment and test-bench work for suitable injection pumps from these engine families.

Our marine service is not limited to one pump manufacturer or one engine family. Depending on pump design, condition, technical documentation, spare-parts availability and suitable test-bench adaptation, we assess, overhaul, repair and calibrate mechanical fuel injection pumps from Bosch, LÓrange (also searched as L'Orange), Kugelfischer and other manufacturers. We accept enquiries for mechanical fuel-injection equipment used on all categories of marine engines operating either at fixed speed or across a variable speed range, including main propulsion, auxiliary, generator and other shipboard duties. Common Rail systems are not part of this service scope.

Deutz 628 Engine Applications

The 628 family includes several cylinder configurations. Our technical enquiries commonly concern injection equipment from engines such as:

• SBV6M628
• SBV8M628
• SBV9M628
• SBV12M628
• SBV16M628

Corresponding applications from the Deutz 528 family can also be assessed. The exact injection-pump version must always be identified from the installed unit, because engine family, cylinder count, output, rated speed, year of manufacture and marine configuration can influence the pump specification.

Typical Deutz Injection-Pump References

The following Deutz references are examples encountered in the 628 environment and can be useful search and identification terms. They are listed for identification only and must not be interpreted as automatic interchangeability:

• 02128724
• 02128708
• 02128710
• 02125802
• 02128229
• 04093601
• 02125803
• 02125822
• 04093605
• 02125823

Important: The Woodward Governor Is a Separate Engine Component

On Deutz 528 and 628 applications, the Woodward governor is separately mounted on the engine and is not part of the injection-pump delivery scope. Our pump assessment therefore concerns the injection pump and its directly associated mechanical fuel-delivery components. Governor work must be considered separately according to the installed engine configuration.

Our Overhaul Process

1. Identification of the exact pump, engine and application.
2. Initial condition assessment and documentation before dismantling.
3. Complete dismantling and controlled cleaning.
4. Dimensional inspection and assessment of mechanical wear.
5. Repair, reconditioning or replacement of damaged components where technically appropriate.
6. Precision reassembly with verification of mechanical movement and clearances.
7. Test-bench operation and calibration according to confirmed technical data.
8. Final verification and documentation of the completed work.

Fixed-Speed and Variable-Speed Marine Duty

Injection equipment for a fixed-speed auxiliary or generator engine is evaluated differently from equipment used on a variable-speed propulsion engine. Rated speed, load range, control behaviour and the available engine data determine the required test points. We therefore request the actual duty of the engine at the beginning of every project.

Spare Parts, Reconditioning and Reverse Engineering

The age of many 528 and 628 installations means that original components may no longer be available from normal supply channels. Our approach is to preserve the original injection equipment wherever technically sensible. This may involve sourcing historical stock, reconditioning reusable parts or reproducing suitable mechanical components by reverse engineering. Reproduction is only considered after material, geometry, loading and functional requirements have been evaluated.

Not Limited to Deutz Pumps

Although this page focuses on Deutz 528 and 628 engines, our marine workshop also evaluates mechanical injection pumps from Bosch, LÓrange, Kugelfischer and other manufacturers used on fixed-speed and variable-speed marine engines. This makes it possible for shipyards and fleet operators to approach us with mixed fleets and different generations of mechanical fuel-injection equipment.

Information Required for a Technical Assessment

• clear photographs of the complete injection equipment and all identification plates
• pump manufacturer, complete pump type and all visible part or reference numbers
• engine manufacturer and exact engine designation
• number of cylinders, rated power and rated speed
• whether the engine operates at fixed speed or over a variable speed range
• marine application: main propulsion, auxiliary engine, generator set or other duty
• direction of rotation, if known
• description of the fault, operating symptoms and previous repair history
• available test sheets, engine acceptance data, manuals or calibration information

Request a Deutz 528 / 628 Injection-Pump Assessment

Send us photographs of the complete pump and all nameplates before dismantling or cleaning the unit. We will compare the identification data with the engine application and advise whether inspection, overhaul and test-bench work can be carried out in our workshop.