CLAAS 7775h – Claas Eng A15 Engine Module: Disparity of intensity of the high pressure pump solenoid valve

The engine’s power increases temporarily to allow the high pressure common rail pressure to exceed the upper threshold of the pressure restricter, which then opens. This indicates a disparity in the intensity of the high pressure pump solenoid valve.

1. 1

   The high pressure pump solenoid valve for high pressure fuel (Y344)

1. 1

   Inspect

   Check the high pressure pump solenoid valve for high pressure fuel (Y344) for visible damage or wear.

2. 2

   Test

   Test the operation of the high pressure pump solenoid valve for high pressure fuel (Y344) according to the service manual.

3. 3

   Replace

   If the high pressure pump solenoid valve for high pressure fuel (Y344) is found to be faulty, replace it with a new one.