MWM/Deutz TBD620 and TCD2020 Fuel Injection Pump Repair, Rebuild and Inspection

MWM/Deutz TBD620 and TCD2020 Fuel Injection Pumps

Specialist Overhaul, Repair, Calibration and Spare-Parts Support for Bosch P9 and P10 Inline Injection Pumps

The MWM/Deutz TBD620 and TCD2020 engine families are large high-performance diesel engines used in marine propulsion, power generation, industrial installations and stationary applications.

Depending on engine configuration, cylinder count, power rating, rated speed and technical production status, different mechanical Bosch inline fuel injection pumps were used throughout these engine families.

For TBD620 and TCD2020 V8, V12 and V16 engines, both Bosch P10 and Bosch P9 injection-pump systems can be encountered depending on the individual engine configuration.

The engine designation alone is therefore not sufficient to identify the correct injection pump.

For reliable technical identification, the complete combination of the following information is required:

complete Bosch pump designation
Bosch part number
MWM/Deutz part number
exact engine model
engine serial number
number of cylinders
rated engine output
rated engine speed
application
and technical pump configuration

Einspritzpumpen Manufaktur NRW specialises in the complete overhaul, dimensional inspection, spare-parts support and test-bench calibration of these mechanical large-diesel injection pumps.

Our specialist work includes:

MWM/Deutz TBD620 V8

MWM/Deutz TBD620 V12

MWM/Deutz TBD620 V16

MWM/Deutz TCD2020 V8

MWM/Deutz TCD2020 V12

MWM/Deutz TCD2020 V16

as well as complete V16 injection-pump pairs and tandem pump assemblies.

Based in North Rhine-Westphalia, Germany – supporting marine, industrial and power-generation customers throughout Europe and worldwide.

TBD620 and TCD2020 – Similar Engines Do Not Automatically Use the Same Injection Pump

One of the most important aspects of these engine families is the number of different injection-pump configurations.

Two injection pumps may appear almost identical externally while being considerably different internally.

Differences may include:

pumping elements
plunger diameter
fuel-delivery quantity
camshaft
cam profile
direction of rotation
drive arrangement
control mechanism
coupling
rated pump speed
fuel-delivery characteristic
and test-bench calibration

For this reason, an injection pump must never be identified, rebuilt or calibrated solely on the basis of its external appearance.

Our basic principle is:

The complete pump identification determines the technical configuration and the correct calibration specification.

Bosch P10 Injection Pumps for TBD620 and TCD2020

Different Bosch P10 inline injection pumps are used within the TBD620 and TCD2020 engine families.

Relevant pump type designations include:

PE8/10/150/100LS50

PE8/10/150/100LS51

PE8/10/150/100LS52

PE8/10/150/100LS53

as well as further configurations for different cylinder counts and engine power ratings.

Although these pumps can appear very similar externally, their internal specification and calibration may differ substantially.

They must therefore not be considered interchangeable without technical verification.

PE8/10/150/100LS50

Bosch:

9 410 365 828

Alternative search format:

9410365828

MWM/Deutz:

12302170

Alternative formats:

1230 2170

1230-2170

This combination belongs to the known P10 configurations used within this large-engine family.

PE8/10/150/100LS51

Bosch:

9 410 365 829

Alternative search format:

9410365829

MWM/Deutz:

12302171

Alternative formats:

1230 2171

1230-2171

The LS50 and LS51 versions demonstrate why even a small difference within a complete Bosch type designation can be technically significant.

For spare-parts identification and calibration, the full designation must always be considered.

PE8/10/150/100LS52

Bosch:

9 410 365 831

Alternative search format:

9410365831

MWM/Deutz:

12302838

Alternative formats:

1230 2838

1230-2838

PE8/10/150/100LS53

Bosch:

9 410 365 832

Alternative search format:

9410365832

MWM/Deutz:

12302839

Alternative formats:

1230 2839

1230-2839

Particularly with closely related LS52 and LS53 pumps, precise identification is essential.

Historical spare-parts documentation, old inventories and aftermarket listings may use different number formats.

For this reason, we do not rely on one isolated number.

We evaluate the complete combination of:

Bosch pump type

Bosch part number

MWM/Deutz reference

and:

engine identification

Further Bosch P10 Configurations

The P10 system used within the TBD620 family is not limited to the PE8 pump versions.

A relevant twelve-cylinder version is:

FA-PE12/10M/150/100LS54

Bosch:

9 410 365 018

Alternative search format:

9410365018

MWM/Deutz:

12137109

This illustrates the wide range of P10 pump configurations used across different engine versions.

Depending on the application, differences may include:

number of pumping elements
element specification
pump housing
camshaft
fuel-delivery range
drive configuration
and calibration data

Bosch P9 Injection Pumps for Higher-Output TBD620 and TCD2020 Applications

Higher-output versions of the TBD620 and TCD2020 engine families can also use larger Bosch P9 inline injection pumps.

Relevant pump types within our specialist work include:

FA-PE8/9M/160/100/LV

Alternative search format:

FAPE89M160100LV

and:

FA-PE8/9M/180/100S24

Alternative search format:

FAPE89M180100S24

These are mechanically robust high-capacity injection pumps designed for demanding large-diesel applications.

Their construction, internal dimensions and fuel-delivery capability differ considerably from smaller inline injection pumps.

Relevant Bosch references include:

B 405 980 021

B405980021

B 405 980 022

B405980022

B 405 980 023

B405980023

B 405 980 024

B405980024

MWM/Deutz references encountered within this field include:

12305948

12305950

12306782

12306784

12305942

12305944

The final assignment of any individual part number to a specific TBD620 or TCD2020 engine is always carried out using the complete pump and engine identification.

A part number is not considered directly interchangeable simply because it appears within the same engine family.

P9 or P10 – Engine Model Alone Is Not Sufficient

One of the most important characteristics of the TBD620 and TCD2020 families is that the engine designation alone does not determine the installed injection-pump system.

Depending on:

engine power
number of cylinders
rated speed
application
production status
and technical specification

different Bosch injection-pump systems can be installed.

For this reason, every overhaul begins with exact identification.

A clear photograph of the pump nameplate can often provide more useful information than a general statement such as:

“TBD620 V16 injection pump.”

For a reliable technical assessment, we require as much of the following information as possible:

complete Bosch pump designation
Bosch part number
MWM/Deutz part number
exact engine designation
engine serial number
number of cylinders
rated output
rated speed
and application

TBD620 V16 and TCD2020 V16

Two Injection Pumps – One Complete V16 Fuel Injection System

On various V16 applications, two injection pumps operate together on the same engine.

From a technical perspective, they should therefore not automatically be regarded as two completely independent units.

Both pumps must ultimately:

deliver the correct fuel quantity
operate with comparable cylinder-to-cylinder delivery
be correctly positioned mechanically
respond consistently to control movement
and work together within the specified engine operating range

Two injection pumps that function correctly when tested individually do not automatically form a correctly matched V16 injection system.

Differences may result from:

different levels of wear
different previous repair histories
different pumping elements
coupling tolerances
drive-system backlash
incorrect basic position
differences in control travel
and unequal fuel delivery

For this reason, wherever technically possible, we assess both V16 injection pumps together.

16-Cylinder Fuel Injection Pump Test Bench

Complete Testing and Synchronisation Using 16 Graduated Measuring Cylinders

For large V16 injection systems, Einspritzpumpen Manufaktur NRW operates a specially configured 16-cylinder injection pump test bench with 16 individual graduated measuring cylinders.

The test bench is designed for large mechanical inline injection pumps and complete tandem pump systems.

Its configuration includes:

high-capacity drive system
increased rotating mass
extended pump bed
mounting capability for large inline injection pumps
volumetric fuel-delivery measurement
up to 16 separate measuring positions
testing of coupled pump assemblies
and synchronisation of complete V16 systems

Following mechanical overhaul, both injection pumps can initially be tested and calibrated individually.

Suitable pump pairs can then be:

mechanically connected
operated together
matched to one another
synchronised
and compared across all 16 pumping elements

16 Measuring Cylinders – 16 Individual Delivery Quantities

Each pumping element ultimately supplies one individual engine cylinder.

On our test bench, every pumping element can therefore be assigned to a separate volumetric measuring position.

This allows direct comparison of:

Pump I – element by element

Pump II – element by element

Pump I compared with Pump II

and:

all 16 pumping elements together

Depending on the pump configuration and available calibration specification, we can assess:

absolute delivery quantity
delivery variation
repeatability
behaviour at different test speeds
response to adjustment
control movement
and synchronisation between both pumps

Our objective is not simply:

two repaired injection pumps.

Our objective is:

a technically matched fuel injection system for the complete V16 engine.

Why Equal Fuel Delivery Matters

Unequal fuel delivery results in different combustion conditions between individual cylinders.

Possible consequences include:

unequal cylinder output
different exhaust-gas temperatures
uneven thermal loading
irregular engine operation
smoke
increased fuel consumption
poor load response
unequal mechanical loading
and increased long-term engine wear

For marine propulsion and power-generation applications in particular, balanced cylinder loading is an important factor in reliable engine operation.

Test-bench calibration is therefore not simply about producing a certain maximum fuel quantity.

The actual objective is:

repeatable, balanced and engine-specific fuel delivery across the complete injection system.

Our TBD620 and TCD2020 Injection Pump Overhaul Process

1. Technical Identification

Before dismantling, we record:

complete Bosch pump designation
Bosch part number
MWM/Deutz part number
engine model
engine serial number
number of cylinders
rated output
rated speed
direction of rotation
application
individual pump or complete pump pair
and available calibration documentation

For a V16 system, both pumps are documented individually.

2. Complete Dismantling

The injection pump is completely dismantled into its functional assemblies.

Depending on the exact pump type, components inspected include:

pump housing
pumping elements
plungers
barrels
delivery valves
delivery-valve holders
camshaft
cam profiles
rollers
roller tappets
bearings
tappet pins
shafts
bushes
control mechanism
springs
actuating components
pump drive
couplings
sealing surfaces
and housing fits

3. Cleaning, Inspection and Precision Measurement

After complete cleaning, all relevant components are technically assessed.

Particular attention is paid to:

pumping-element wear
internal leakage
corrosion
surface condition
camshaft wear
cam profiles
roller wear
roller-tappet wear
bearing clearance
delivery valves
control mechanism
fits
and evidence of previous repairs

A component is not considered serviceable simply because it appears visually acceptable.

The decisive criteria are:

dimensional accuracy, surface condition, wear and actual technical function.

4. Spare-Parts Support for Legacy Large-Diesel Injection Pumps

Spare-parts availability for many historical large-diesel injection pumps is becoming increasingly difficult.

Certain original components may be:

discontinued
available only in limited quantities
available only as New Old Stock
or no longer commercially available at all

Depending on the individual project, we therefore work with:

our own stock
original components
historical inventories
New Old Stock
used reference components
complete donor pumps
technical documentation
and specialised manufacturing partners

A vessel, generator or power-generation engine should not necessarily become unusable simply because one individual injection-pump component is no longer available through normal supply channels.

5. Reverse Engineering of Obsolete Injection-Pump Components

Where an essential pump component is no longer available, we assess whether technical reconstruction and reproduction are feasible.

Depending on the project, we source:

used original components
New Old Stock
damaged reference parts
comparison components
historical drawings
old spare-parts documentation
and available manufacturer information

These components can then be:

dismantled
precisely measured
evaluated for material properties
analysed technically
digitally reconstructed
prototyped
tested
and manufactured as individual replacement parts or small production batches

Depending on component function, we consider:

material
hardness
heat treatment
fit
wear behaviour
surface quality
mechanical loading
manufacturing tolerances
and long-term operational reliability

Our objective is not to create a visual copy of an old part.

The replacement component must perform correctly within the complete injection pump.

6. Assembly and Basic Adjustment

After all components have been inspected and repaired, the injection pump is carefully reassembled.

Depending on pump type, the process includes verification of:

correct pumping-element assignment
delivery valves
camshaft position
roller tappets
bearing clearances
control mechanism
basic settings
lubrication
coupling
sealing
and pump-specific adjustment values

7. Test-Bench Calibration

Following mechanical overhaul, the injection pump is operated on the appropriate test bench.

Depending on pump type and available calibration specification, testing may include:

delivery quantity of every pumping element
element-to-element balance
different test speeds
repeatability
control travel
shut-off behaviour
leakage
mechanical operation
and pump-specific target values

Calibration values are not transferred from a pump merely because it appears externally similar.

The pump is calibrated according to the technical specification of the actual injection-pump configuration.

Fuel Injection Pump and Injectors Must Work Together

A correctly calibrated injection pump can only perform properly when the injectors and nozzle-holder assemblies are also suitable for the actual engine configuration.

TBD620 and TCD2020 engines use different versions of:

nozzle holders
complete nozzle-holder assemblies
injector nozzles
retaining nuts
nozzle protection tubes
and related components

In cases involving:

unequal exhaust-gas temperatures
smoke
cylinder-to-cylinder imbalance
extended periods of inactivity
unknown service history
or complete engine overhaul

we recommend considering the complete mechanical fuel injection system rather than only the injection pump.

Typical Damage and Wear

Typical findings on TBD620 and TCD2020 injection pumps include:

worn pumping elements
excessive internal leakage
damaged delivery valves
corrosion
damage after long periods of inactivity
seized plungers
restricted control mechanisms
camshaft wear
damaged cam profiles
roller wear
roller-tappet wear
bearing damage
excessive bearing clearance
damaged springs
coupling damage
fuel leakage
oil leakage
incorrect combinations of internal components
damage caused by previous improper repairs
and unequal fuel-delivery quantities

On V16 systems, an additional point must always be considered:

Do both injection pumps still match one another technically?

Frequently Searched Pump Types and Part Numbers

Bosch P10

PE8/10/150/100LS50

Bosch:

9 410 365 828

9410365828

MWM/Deutz:

12302170

1230 2170

1230-2170

PE8/10/150/100LS51

Bosch:

9 410 365 829

9410365829

MWM/Deutz:

12302171

1230 2171

1230-2171

PE8/10/150/100LS52

Bosch:

9 410 365 831

9410365831

MWM/Deutz:

12302838

1230 2838

1230-2838

PE8/10/150/100LS53

Bosch:

9 410 365 832

9410365832

MWM/Deutz:

12302839

1230 2839

1230-2839

FA-PE12/10M/150/100LS54

Bosch:

9 410 365 018

9410365018

MWM/Deutz:

12137109

Bosch P9 – Relevant Pump Types

Relevant pump types within this specialist field include:

FA-PE8/9M/160/100/LV

FAPE89M160100LV

and:

FA-PE8/9M/180/100S24

FAPE89M180100S24

Relevant Bosch references include:

B 405 980 021 / B405980021

B 405 980 022 / B405980022

B 405 980 023 / B405980023

B 405 980 024 / B405980024

MWM/Deutz references encountered within these applications include:

12305948

12305950

12306782

12306784

12305942

12305944

Final identification is always based on the complete pump and engine configuration.

Why Professional Overhaul Can Still Make Economic Sense

Many TBD620 and TCD2020 engines remain in service in technically important installations worldwide.

Typical applications include:

marine vessels
generator installations
power stations
emergency power systems
industrial plants
pumping installations
and stationary power-generation systems

In many cases, the complete engine is not technically worn out.

The actual problem may be:

one injection pump or one obsolete individual component.

Replacing the complete engine can create significantly greater technical and commercial consequences.

Possible additional work may include:

engine foundation modification
generator or gearbox adaptation
cooling-system modification
exhaust-system changes
fuel-system changes
electrical modifications
control-system integration
monitoring-system changes
documentation
certification
and extended plant downtime

For operators, technical purchasing departments and asset managers, professional overhaul of the existing fuel injection system can therefore represent a highly attractive alternative to replacement of the complete engine installation.

Every project is assessed individually with regard to technical feasibility and economic value.

International Support for Marine, Industrial and Power-Generation Customers

Our services are intended for:

shipping companies
vessel operators
shipyards
marine-engine service companies
power-generation companies
generator operators
industrial companies
engine rebuilders
diesel injection specialists
technical purchasing departments
spare-parts organisations
and operators of legacy MWM/Deutz large diesel engines

International enquiries are welcome.

Injection pumps and individual components can be sent to our workshop in Germany by prior arrangement.

For an initial technical assessment, photographs and complete pump identification are usually the best starting point.

Information Required for an Initial Assessment

Please provide as much of the following information as possible.

Engine Information

complete engine designation
engine serial number
V8 / V12 / V16
rated engine output
rated engine speed
application

Injection Pump Information

complete Bosch pump designation
Bosch part number
MWM/Deutz part number
direction of rotation
individual pump or pump pair
clear photographs of all nameplates

Additional Information

photographs of the complete injection pump
photographs of the drive side
description of the problem
information about previous repairs
available Bosch, MWM or Deutz technical documentation

For a V16 engine, we recommend submitting both injection pumps together wherever technically and logistically possible.

Frequently Asked Questions

Which Injection Pump Is Installed on My TBD620?

That depends on the exact engine configuration, power rating, rated speed and technical production status.

The engine designation alone is not sufficient for reliable identification.

Please send us a clear photograph of the injection-pump nameplate.

Which Injection Pump Is Installed on My TCD2020?

Different pump versions are also used within the TCD2020 family.

Complete pump and engine data are required for correct technical identification.

Do You Overhaul Bosch P9 Injection Pumps for TBD620 and TCD2020 Engines?

Yes.

Bosch P9 injection pumps for these large-diesel applications form an important part of our specialist work.

The pump is completely dismantled, measured, technically assessed, overhauled and subsequently calibrated on appropriate test-bench equipment.

Do You Overhaul Bosch P10 Injection Pumps for TBD620 and TCD2020 Engines?

Yes.

Different P10 configurations from these engine families can be identified, overhauled and tested in our workshop.

Can Both V16 Injection Pumps Be Tested Together?

Yes, provided that the specific pump configuration can be mounted and driven on our test bench.

The pumps can initially be tested individually and subsequently operated and synchronised as a complete pump system.

Why Should Both Injection Pumps from a V16 Engine Be Submitted Together?

Because this allows us to determine whether both pumps truly match one another in terms of:

fuel delivery
control movement
basic mechanical position
wear condition
and synchronisation

For a V16 system, the interaction between both pumps is as important as the condition of each individual pump.

Can Obsolete Injection-Pump Components Be Reproduced?

Depending on component design and technical feasibility, yes.

We first investigate:

available original parts
New Old Stock
historical inventories
and used reference components

Where no suitable replacement is available, selected components can be reverse engineered and manufactured again.

Request a TBD620 / TCD2020 Injection Pump Assessment

Do you operate an:

MWM/Deutz TBD620 V8

MWM/Deutz TBD620 V12

MWM/Deutz TBD620 V16

MWM/Deutz TCD2020 V8

MWM/Deutz TCD2020 V12

or:

MWM/Deutz TCD2020 V16

and require injection-pump repair, overhaul, calibration or technical assessment?

Please send us:

exact engine designation
engine serial number
number of cylinders
rated engine output
rated engine speed
complete Bosch pump designation
Bosch part number
MWM/Deutz part number
photographs of all pump nameplates
photographs of the complete injection pump
description of the fault
and available technical documentation

After reviewing the information, we can identify the pump configuration and assess the required overhaul, spare-parts and test-bench work.

Einspritzpumpen Manufaktur NRW

Specialist for MWM/Deutz TBD620 and TCD2020 Fuel Injection Systems

Our services include:

TBD620 V8 Injection Pump Overhaul

TBD620 V12 Injection Pump Overhaul

TBD620 V16 Injection Pump Overhaul

TCD2020 V8 Injection Pump Overhaul

TCD2020 V12 Injection Pump Overhaul

TCD2020 V16 Injection Pump Overhaul

Bosch P9 Fuel Injection Pump Repair

Bosch P10 Fuel Injection Pump Repair

Complete Dismantling and Technical Inspection

Precision Measurement of Pumping Elements and Components

Delivery-Valve Inspection

Camshaft and Roller-Tappet Inspection

Spare-Parts Sourcing

Test-Bench Calibration

Cylinder-to-Cylinder Fuel-Delivery Balancing

16-Cylinder Testing with 16 Graduated Measuring Cylinders

Synchronisation of Complete V16 Injection Pump Systems

Reverse Engineering

Reproduction of Obsolete Injection-Pump Components

From an individual worn pumping element to a complete mechanically coupled V16 pump system, we assess the fuel injection equipment as part of the actual TBD620 or TCD2020 engine configuration – not as an isolated component.