Bosch P10 Fuel Injection Pump Repair, Overhaul and Calibration

Specialist Workshop for Mechanical Bosch P10 Inline Fuel Injection Pumps

Einspritzpumpen Manufaktur NRW is an independent specialist workshop in Germany providing professional repair, overhaul, testing and calibration of mechanical Bosch P10 inline fuel injection pumps.

Our principal P10 applications include fuel injection pumps used in MWM and Deutz large diesel engines of the following families:

MWM/Deutz TBD604
MWM/Deutz TBD620
MWM/Deutz TCD2020
marine propulsion engines
industrial diesel engines
generator sets
stationary power-generation engines
emergency power installations
and other heavy-duty diesel applications

Every Bosch P10 fuel injection pump is individually identified, completely dismantled, cleaned, inspected and measured.

Worn components are repaired or replaced. Where original spare parts are no longer available, technically suitable components may be reconstructed and reproduced through reverse engineering.

Following reassembly, the injection pump is operated, tested and calibrated on suitable fuel injection pump test equipment.

Based in North Rhine-Westphalia, Germany – supporting marine operators, industrial companies, power-generation businesses, engine rebuilders and specialist workshops throughout Europe and worldwide.

Request a Bosch P10 Pump Assessment

Please send us clear photographs of the complete injection pump, its nameplate, all visible part numbers and the corresponding engine information.

Contact Our Bosch P10 Specialists

Professional Bosch P10 Fuel Injection Pump Overhaul

Bosch P10 inline injection pumps are high-capacity mechanical fuel injection pumps designed for demanding medium- and large-engine applications.

Each pump section must deliver a precisely defined quantity of fuel at the correct operating point. Uniform delivery across all cylinders is essential for reliable combustion and balanced engine operation.

Wear, corrosion, contamination or incorrect adjustment may result in:

unequal fuel delivery
uneven cylinder output
irregular engine operation
reduced engine performance
increased fuel consumption
starting problems
smoke formation
unequal exhaust-gas temperatures
excessive thermal loading
fuel or lubricating-oil leakage
restricted control-rack movement
and reduced engine service life

A professional Bosch P10 overhaul therefore involves considerably more than replacing gaskets or external seals.

The complete injection pump must be dismantled, cleaned, measured and technically evaluated before its actual condition can be determined.

Our Bosch P10 services include:

technical pump identification
incoming inspection and documentation
complete dismantling
multi-stage industrial cleaning
visual inspection
precision dimensional measurement
inspection of the pump elements
inspection of delivery valves
camshaft inspection
tappet and roller inspection
bearing and housing inspection
inspection of the control rack and actuating components
repair or replacement of worn parts
reverse engineering of obsolete components
precision reassembly
mechanical basic adjustment
test-bench operation
fuel-delivery calibration
comparison of all pump sections
leakage testing
functional verification
and final inspection

Every injection pump is assessed according to its complete Bosch type designation, Bosch part number, MWM or Deutz reference, engine application and technical condition.

Bosch P10 Pump Types

Bosch PE8/10/150 Inline Fuel Injection Pumps

Frequently requested Bosch P10 pump types include:

PE8/10/150/100LS50
PE8/10/150/100LS51
PE8/10/150/100LS52
PE8/10/150/100LS53

Other documented Bosch P10 configurations include:

FA-PE6/10/160/300RS34
FA-PE12/10/160/100LS43

These designations represent only a selection of the numerous Bosch P10 versions used in industrial, marine and stationary large diesel engines.

Depending on the individual version, P10 injection pumps may differ in:

number of pump sections
direction of rotation
pump-element specification
fuel-delivery range
camshaft design
cam profile
drive arrangement
control mechanism
mounting configuration
rated pump speed
associated engine output
engine application
and production status

A Bosch P10 injection pump cannot be identified reliably from its external appearance alone.

The complete nameplate information and engine data are required for a binding technical assessment.

Alternative Bosch P10 Type-Number Formats

Historical spare-parts lists, service documentation, databases and online listings may use different formats for the same Bosch pump designation.

The type:

PE8/10/150/100LS53

may also be written as:

PE 8/10/150/100 LS53
PE8 10 150 100 LS53
PE8-10-150-100-LS53
PE810150100LS53

The designation:

FA-PE6/10/160/300RS34

may also appear as:

FA PE6/10/160/300RS34
FA PE6 10 160 300 RS34
FA-PE6-10-160-300-RS34
FAPE610160300RS34

The designation:

FA-PE12/10/160/100LS43

may also appear as:

FA PE12/10/160/100LS43
FA PE12 10 160 100 LS43
FA-PE12-10-160-100-LS43
FAPE1210160100LS43

Regardless of how the designation is written, final identification is based on the original nameplate, pump construction, engine application and available technical documentation.

Bosch P10 Part Numbers

Bosch P10 fuel injection pumps may also be identified by their Bosch original part numbers.

Frequently requested references include:

9 410 365 828
9 410 365 829
9 410 365 830
9 410 365 831

These Bosch numbers may also be written without spaces:

9410365828
9410365829
9410365830
9410365831

Additional Bosch references associated with P10 large-engine injection systems include:

9 400 365 813
9 400 365 814
9 410 365 813
9 410 365 814

Alternative search formats include:

9400365813
9400365814
9410365813
9410365814

The Bosch part number is an important starting point, but it is not always sufficient for a definitive identification.

The complete pump type, number of pump sections, direction of rotation, engine version, rated speed and manufacturer references must also be considered.

MWM and Deutz Original Part Numbers

Bosch P10 injection pumps may additionally be documented under MWM or Deutz original equipment references.

Frequently requested MWM and Deutz part numbers include:

12302170
12302171
12302838
12302839
12137080

These references may also appear in alternative formats such as:

1230 2170
1230-2170
1230 2171
1230-2171
1230 2838
1230-2838
1230 2839
1230-2839
1213 7080
1213-7080

The numbers listed on this page support technical identification and online searches.

They must not be interpreted as automatic one-to-one cross-references. A binding assignment requires verification of the complete Bosch designation, the engine manufacturer’s reference and the actual pump configuration.

Bosch P10 Applications in MWM and Deutz Engines

MWM/Deutz TBD604

The TBD604 engine family was manufactured in several cylinder configurations:

TBD604 inline six-cylinder
TBD604 V8
TBD604 V12
TBD604 V16

The TBD604 series was equipped with the lower-rated Bosch P10 injection-pump system.

The correct P10 version depends on factors including:

cylinder configuration
engine output
rated speed
application
direction of rotation
and technical production status

The designation “TBD604 injection pump” alone is therefore not sufficient for reliable pump identification.

MWM/Deutz TBD620

The TBD620 engine family includes:

TBD620 V8
TBD620 V12
TBD620 V16

Depending on engine version and power rating, TBD620 engines were equipped with Bosch P10 or Bosch P9 fuel injection pumps.

The pump series must therefore be determined from the actual injection pump and engine data rather than from the general engine-family designation alone.

MWM/Deutz TCD2020

The TCD2020 engine family includes:

TCD2020 V8
TCD2020 V12
TCD2020 V16

Depending on the specific engine version and output, TCD2020 engines may use Bosch P10 or Bosch P9 fuel injection pumps.

For accurate identification, we require:

exact engine designation
number of cylinders
rated output
rated engine speed
complete pump designation
Bosch part number
and clear photographs of the nameplate

Marine, Industrial and Power-Generation Applications

Bosch P10 inline fuel injection pumps are used in demanding applications where operational reliability and accurately balanced fuel delivery are essential.

Typical applications include:

marine propulsion engines
marine auxiliary engines
industrial power units
generator sets
emergency generator systems
stationary power plants
pump drives
compressor drives
railway applications
mining machinery
heavy industrial equipment
and continuously operated diesel installations

The operating conditions of these engines differ significantly.

A marine propulsion engine, a stationary generator and an industrial drive may use mechanically similar pumps but require different:

delivery quantities
speed characteristics
control settings
load behaviour
and operating specifications

For this reason, calibration is based on the exact pump and engine configuration rather than on the pump family alone.

Why Bosch P10 Overhaul Requires Specialist Knowledge

The Bosch P10 is a precision mechanical assembly with multiple interacting components.

Relevant components include:

plunger-and-barrel assemblies
pump plungers
pump barrels
delivery valves
camshaft
cam profiles
roller tappets
tappet rollers
bearings
bushes
shafts
control rack
control sleeves
actuating components
springs
adjustment mechanisms
housing bores
sealing surfaces
and mechanical fits

The condition of each component can influence fuel delivery and repeatability.

Wear is not always visible during an external inspection. A pump may appear complete and movable while internal components already exhibit:

dimensional wear
corrosion
pitting
restricted movement
damaged surfaces
bearing play
incorrect component combinations
or evidence of previous improper repair

A reliable condition assessment is therefore only possible after controlled dismantling, cleaning and dimensional inspection.

Our Bosch P10 Overhaul Process

1. Incoming Inspection and Documentation

Before dismantling, the injection pump is documented in the condition in which it arrives.

We record:

Bosch pump type
Bosch part number
MWM or Deutz part number
number of pump sections
direction of rotation
drive configuration
visible damage
corrosion
fuel leakage
oil leakage
missing components
previous repair work
and the available engine information

Photographs of the pump and nameplate should be provided before shipping whenever possible.

2. Initial Functional Assessment

Where the technical condition permits, the pump is checked for:

free mechanical movement
control-rack movement
visible leakage
damaged drive components
seized pump sections
and obvious functional irregularities

An initial functional assessment does not replace complete dismantling, but it can provide valuable information about the fault condition.

3. Controlled Dismantling

The Bosch P10 pump is professionally dismantled into its individual components and functional assemblies.

During dismantling, we document:

component orientation
installation positions
existing adjustment conditions
mechanical relationships
previous modifications
and visible signs of failure

Components belonging to individual pump sections remain clearly assigned throughout the inspection process.

4. Multi-Stage Cleaning

Pump housings, fuel-delivery components and mechanical parts are cleaned using appropriate workshop processes.

Cleaning removes:

diesel-fuel residue
lubricating oil
deposits
corrosion products
dirt
wear particles
and contamination caused by previous damage

Accurate measurement is only possible after the relevant components have been thoroughly cleaned.

5. Visual Inspection and Precision Measurement

Depending on the P10 version, the inspection includes:

pump elements
plunger-and-barrel assemblies
delivery valves
camshaft
cam profiles
rollers
tappets
bearings
bushes
shafts
control components
actuating mechanisms
adjustment components
housing bores
sealing surfaces
and mechanical fits

Components are reused only when their condition and dimensions permit reliable continued operation.

6. Repair or Replacement of Worn Components

Worn, corroded or damaged components are replaced or repaired where technically permissible.

Required parts may include:

pump elements
delivery valves
bearings
bushes
rollers
roller bearings
needle bearings
shaft seals
O-rings
flat gaskets
springs
actuating components
connection parts
and pump-specific mechanical components

Where suitable original spare parts are unavailable, the technical feasibility of component reproduction is assessed.

7. Precision Reassembly

The injection pump is reassembled under controlled workshop conditions.

During assembly, we verify:

correct component allocation
component orientation
bearing positions
mechanical clearances
movement of the control rack
interaction between all pump sections
sealing surfaces
and the required basic mechanical settings

Correct assembly is essential before meaningful fuel-delivery testing can begin.

8. Test-Bench Operation and Calibration

After reassembly, the Bosch P10 pump is operated on suitable fuel injection pump test equipment.

Depending on the specific pump and available test data, the following can be checked and adjusted:

fuel delivery from every pump section
cylinder-to-cylinder delivery uniformity
delivery behaviour at different pump speeds
repeatability of measured values
control-rack movement
mechanical actuation
shut-off behaviour where applicable
leakage
and interaction with the governing or control system

The pump is released only after its mechanical function and relevant fuel-delivery values have been verified.

Bosch P10 Test-Bench Calibration

Test-bench calibration is a fundamental part of every professional P10 overhaul.

Uniform fuel delivery has a direct influence on:

cylinder balance
engine output
fuel consumption
combustion quality
exhaust-gas temperatures
engine smoothness
mechanical loading
thermal loading
operating reliability
and engine service life

Our workshop operates Bosch EPS test equipment for mechanical inline fuel injection pumps as well as a specially developed test bench for large injection systems with up to 16 cylinders.

The suitable test arrangement is selected according to:

pump size
number of pump sections
drive configuration
operating speed
required test range
and whether an individual or tandem pump assembly is involved

16-Cylinder Fuel Injection Pump Test Bench

For particularly large diesel injection systems, we operate a dedicated 16-cylinder fuel injection pump test bench.

Its technical configuration includes:

an extended pump bed
increased rotating mass
a high-capacity drive system
mounting capacity for large inline injection pumps
testing of complete tandem assemblies
and synchronisation of mechanically coupled injection pumps

This equipment is particularly relevant for large V16 engines using two connected injection pumps.

Tandem P10 Pump Testing and Synchronisation

Some V16 diesel engines use two mechanically coupled injection pumps operating together as one complete fuel injection system.

In these applications, testing each pump separately does not fully verify how both units interact when installed and driven together.

Where the pump design and available technical data permit, the process may include:

individual inspection of both pumps,
individual calibration of each pump,
installation as a complete tandem assembly,
joint test-bench operation,
comparison of all pump sections,
and mechanical synchronisation of both units.

Correct tandem synchronisation is important for:

uniform fuel delivery across all cylinders
minimum cylinder-to-cylinder deviation
balanced engine output
uniform exhaust-gas temperatures
smooth engine operation
reliable load acceptance
and long-term operational reliability

Please send photographs and dimensional information before shipping a complete tandem assembly so that mounting and testing requirements can be assessed in advance.

Reverse Engineering of Obsolete Bosch P10 Components

Original replacement parts for many historical Bosch P10 fuel injection pumps are now available only in limited quantities or have been discontinued.

An unavailable component does not automatically mean that the complete injection pump is beyond repair.

Where technically and economically feasible, existing original parts can be:

accurately measured
dimensionally documented
assessed according to their mechanical function
reconstructed in CAD
assigned suitable material specifications
reproduced by specialised European manufacturers
dimensionally inspected
and functionally tested

Depending on the component, the reverse-engineering process considers:

dimensions
tolerances
fits
material specification
hardness
heat treatment
surface quality
lubrication conditions
mechanical loading
thermal loading
wear behaviour
and long-term operational reliability

The feasibility of reproduction is evaluated individually for each component.

Highly loaded or safety-relevant components are reproduced only when the relevant technical requirements can be defined and verified sufficiently.

Bosch P10 Spare Parts and Component Support

Our own stock includes various wear parts and replacement components for historical mechanical fuel injection pumps.

Depending on the P10 version, required components may include:

plunger-and-barrel assemblies
pump elements
delivery valves
bearings
bushes
tappet rollers
seals
shaft seals
O-rings
springs
control components
actuating parts
connection components
housing components
and specially reproduced parts

Components that are not immediately available may be:

sourced from existing stocks
professionally reconditioned
repaired where technically permissible
or reproduced through reverse engineering

Our stock and access to specialised European manufacturing capabilities help reduce avoidable downtime for marine, industrial and power-generation applications.

Typical Reasons for a Bosch P10 Pump Assessment

A Bosch P10 injection pump should be inspected when engine behaviour, operating data or visible damage indicate a possible pump fault.

Typical reasons include:

external fuel leakage
lubricating-oil leakage
corrosion after extended storage
seized or restricted pump movement
restricted control-rack movement
uneven engine operation
unequal exhaust-gas temperatures
reduced engine output
increased fuel consumption
poor starting behaviour
excessive smoke
irregular fuel delivery
water or contamination in the fuel system
damage following extended inactivity
unknown previous repair work
and overhaul of the associated engine

These symptoms do not automatically prove that the injection pump is the sole cause.

Injectors, nozzle holders, fuel supply, timing, compression, engine condition and operating data should also be considered during fault diagnosis.

International Bosch P10 Repair Service

Einspritzpumpen Manufaktur NRW is based in North Rhine-Westphalia, Germany.

We receive enquiries from:

engine operators
shipping companies
industrial companies
power-generation businesses
engine rebuilders
diesel service companies
specialist workshops
and spare-parts suppliers

Bosch P10 injection pumps and individual components can be sent to our workshop from European and international locations by prior arrangement.

Before shipping, please provide the available identification and engine information. This allows us to determine:

whether the pump can be accepted
which documents are required
whether special transport precautions are necessary
whether an individual pump or tandem system is involved
and which additional technical data are required

Please do not dismantle or unnecessarily clean the injection pump before contacting us.

Its original condition may provide important information about leakage, corrosion, contamination, component failure or previous repair work.

Frequently Asked Questions About Bosch P10 Injection Pumps

Do you repair Bosch P10 fuel injection pumps?

Yes. Bosch P10 inline injection pumps are one of our principal specialist areas.

We provide identification, dismantling, cleaning, dimensional inspection, repair, reassembly, test-bench operation and calibration.

Can you overhaul a Bosch PE8/10/150/100LS53?

Pumps with the designation PE8/10/150/100LS53 can be submitted for individual technical assessment.

The available overhaul scope depends on the exact pump version, its condition, available test data and the availability or reproducibility of the required components.

Can you repair a Bosch 9 410 365 831 injection pump?

Bosch P10 pumps carrying part numbers such as 9 410 365 831 can be assessed for repair and overhaul.

Please provide the complete pump designation, a nameplate photograph and information about the associated engine before shipping the pump.

Is a P10 overhaul more than replacing seals?

Yes.

Replacing seals may correct an external leak, but it does not determine the condition of the pump elements, delivery valves, camshaft, tappets, rollers, bearings or other functional components.

A complete overhaul includes dismantling, cleaning, measurement, component assessment, repair, reassembly and test-bench calibration.

Does every TBD604 engine use a P10 injection pump?

The TBD604 engine family was equipped with the lower-rated P10 injection-pump system.

The exact P10 configuration depends on the cylinder arrangement, engine version, output, rated speed and application.

Do TBD620 and TCD2020 engines always use P10 pumps?

No.

Depending on the specific engine version and output, TBD620 and TCD2020 engines may use Bosch P10 or Bosch P9 injection pumps.

The pump must be identified from the actual nameplate and engine data.

Can obsolete Bosch P10 parts be reproduced?

Many discontinued parts can be measured, reconstructed and manufactured where their function, material specification and manufacturing requirements can be defined reliably.

Technical and commercial feasibility is assessed individually.

Can you test complete V16 tandem injection pumps?

Depending on the pump design, mounting arrangement and available test data, complete tandem pump assemblies can be operated and synchronised on our dedicated 16-cylinder test bench.

Can international customers send Bosch P10 pumps to Germany?

Yes, by prior arrangement.

Please send identification details and photographs before shipping so that the pump can be assessed and suitable shipping instructions can be provided.

Request a Bosch P10 Fuel Injection Pump Assessment

For an initial technical evaluation, please provide:

clear photograph of the complete nameplate
complete Bosch pump designation
Bosch part number
MWM or Deutz original part number
exact engine manufacturer
complete engine designation
number of cylinders
rated engine output
rated engine speed
direction of rotation, if known
marine, industrial or power-generation application
photographs of the complete pump from several angles
description of the fault
information about previous repairs
period of storage, where applicable
and any available spare-parts lists or calibration documents

A final repair quotation normally requires dismantling and technical inspection because the internal condition of a P10 pump cannot be determined reliably from photographs alone.

Contact Our Bosch P10 Fuel Injection Pump Workshop

Name *

Company

Country

Email Address *

Telephone Number

Engine Manufacturer and Model

Bosch Pump Type

Bosch Part Number

Description of the Fault *

Upload Nameplate and Pump Photographs

Submit Technical Enquiry

Einspritzpumpen Manufaktur NRW

Specialist for Bosch P10 Inline Fuel Injection Pumps

Professional:

Bosch P10 fuel injection pump repair
Bosch P10 fuel injection pump overhaul
Bosch P10 test-bench calibration
Bosch P10 spare-parts support
reverse engineering of obsolete components
testing of large injection pumps
and synchronisation of tandem pump assemblies

For MWM and Deutz marine, industrial, power-generation and stationary large diesel engines.

Request a Bosch P10 Repair Assessment