Performance Testing

The performance testing of pump includes electrical characteristics, accuracy, the tolerance of high temperature, low temperature, pressure as well as leakage, durability and others working conditions testing. These conditions of each pump will be tested before our pumps are sent to customers.

Above are the tests needed to be done after the pumps are finished producing. However, regular checking also very important to keep the pump perform well.

In order to make sure the pump works normally, there are some parts of pump needed to be checked regularly and before installing to injector.

① Check whether there is deformation, cracking, thread damage, quenching, leakage and rust in the guide sleeve, spring, gasket and tight cap of the pump. The tight cap of the pump must be replaced after being disassembled for more than 5 times, as shown in the following.

② Replace the tight cap of the pump and the copper gasket of the pump

③ Check whether the gap between the pump needle and the pump shell is within the standard range and whether it reaches the standard for use

④All parts should be examined for wear under a microscope at least 20 times larger

⑤ pump tight cap deformation, cracking, thread damage, quenching, leakage, will lead to black smoke vehicle cap, fuel injector damage.

⑥injector opening pressure greater than or less than the specified range may cause injector damage.
⑦ Failure to replace wearing parts in time during maintenance may lead to fuel injector damage.

These are some precautions you need to know to maintain an pump. If there are more questions about pumps and other problems, you are welcomed to contact us, topdieselpump.com will do the best to help you solve your problems.