Do you deal with the
problem while repairing diesel pump?
Give us a call!
We provide a free hotline for our clients
on the issues related to diesel pumps.
Hotline is a supplement to technical
training previously carried out.
We advise in the following areas:
- the technical details of repair of the
- equipment and tools to repair pumps
- computer software and updates
- diagnose possible malfunction of the test
bench, and then repair of it
- selection and ordering of spare parts for
Training provides the knowledge acquisition
to allow the repair of injection pumps and
high pressure pumps. Despite our efforts, we
are unable to foresee all the problems that
you may encounter during repair of pumps.
However, you are not alone! We are always
We support all customers - including those
to whom we have installed the laboratory
many years ago.
Did you know that ...?
Below are ten selected questions which you
will discover the answers during training in
the repair of diesel pumps and what
consequences carries a lack of knowledge and
|1. Which type of high
pressure seals should be used, since
they are available two types of
seals in CP1H pumps . Whether to
apply to the service information on
||The consequences when you don't
know the answer.
A. You repair the pump by using one
of the types of seals without a
proper selection. The pump is back
on the complaint after 10-15
thousands km of mileage with
B. You use the manufacturer's
service information. The pump also
goes back to the complaint with the
same symptoms, as in paragraph (A).
In both cases, you do not know the
cause of the leaks.
||When you know the answer.
You correctly choose type of seals.
The pump is not leaking, you're not
charged with the costs of re-repair,
disassembly/assembly of the pump
from the engine.
|2. Whether it would be
advisable to replace return valve in
CR pump or VP pumps?
|| A percentage of Common Rail pumps
goes to the complaint with signs of
smearing of precision pars. Part of
the VP pumps incorrectly adjusts the
angle of the injection.
|| Common Rail Pump are properly
lubricated and cooled down. VP pumps
properly regulate the injection
|3. Which elements of the
Delphi CR pumps slowly peels?
|| You repaired the pump, hoping to
remove the causes of the formation
of filings. Customer comes back to
complaint after few months. The
entire fuel system includes filings.
Injectors are damaged, pump has to
be repaired with all new parts. The
cost of repair of the vehicle again
is approx. 2.500 €.
|| You completely remove the cause of
the formation of particles from the
pump. The pump has the same
parameters as the new component.
|4. How to diagnose whether a
head with rollers and the shaft of
CR Delphi pump may be rapidly
destroyed and how to avoid such a
situation on the test bench?
|| One for a few Delphi CR pumps
completely destroyes on the test
bench. You destroy new parts
permanently that you have just put
inside. There are matellic filings
inside of test bench. Re-repair of
the pump and cleaning of the test
bench is an expense of approx. 800
€. You don't know the reasons for
such a phenomenon, the situation
will take place again in the future.
|| You properly diagnose the pump if it
has a tendency to produce filings.
In the case of such symptoms of this
phenomenon you quickly turn off the
test bench, protecting it from
contamination with filings from the
pump. You know, where is the cause
of the problem. You repair the pump
in that way that it has the
parameters of the new component.
|5. How to recondition CR Delphi
|| You replace every damaged head. The
cost of pump repairing is
unnecessarily higher. Some customers
doesn't want to repair it because of
|| You recondition the head. The client
receive repaired pump for a lower
amount. Most customers decides to
repair the pump.
|7. Which element of the CR
Siemens VDO pump often makes engine
difficult to start? How to proceed
when the pump after installation of
new parts doesn't have sufficient
flow on the high pressure connector?
|| You have problems with diagnosing
pump faults on the car. When mounted
on the test bench you're not sure
why pump doesn't have flow, any
attempt to change the supply
pressure, steering type etc. do not
|| In the event of failure of the pump
before its dismantling of the engine
you can easily diagnose if it is the
cause of start up problems. You know
how to make it operatable on the
test bench. After starting of dosing
pump passes all the tests correctly.
|8. What to do when in the
VP44 pump from Audi in the tenth
step of calibration it is not
possible to stabilize injection dose
and calibration stops?
|| You're needlessly replacing pump
parts like its head. Calibration
still fails. You gave up.
|| You know how to solve the problem
and the pump calibrates with
positive result - without the
replacement of any additional parts
in the pump.
|9. How to properly lock the
VP pump shaft when test bench is not
blocking it in the desired position?
|| You do a lot of electronic settings
of pressing start, and eventually
after some time the shaft blocks
properly. You are wasting time and
|| You know an easy way, how to make
the test bench to electronically set
start of pressing each time in the
|10. How to recondition the
valve of unit pumps from PLD, choose
the oversized piston, adjust the
internal dimensions and achieve the
correct dose and BIP signal?
|| You can't repair most of the unit
|| You repair almost every unit pump.
After the repair pump has parameters
of the new component.
How to prepare?
Similarly, as in the case of the installing
of the injectors workshop, we help in
preparation of the rooms for the workshop of
diesel pumps and we provide profile guidance
of employees who will work with this