Specifications

Service Training
Page 25
Section 4.1
09.06
CHECK INJECTORS
The injectors are not equipped with bores for leak -off fuel.
The surplus fuel cannot be discharged and accumulates
in the space above the injector needle in the area of the
spring of the injector holder. Actuation of the manual lever
of the injector tester is no longer possible in this case.
For relieving the pressure in the area of the spring,
slacken the tensioning nut before each test and re-tighten
to the specified torque after the test.
- Slacken tensioning nut by approx. 180° and re-tighten.
Use dolly 110 110 for injector.
Specified tightening torque: 30 - 40 Nm
- Connect injector to nozzle tester 8008.
Caution
Beware of injection nozzle jet. The fuel
penetrates deeply into the skin and may cause
blood poisoning.
- With pressure gauge switched-on, slowly press lever of
nozzle tester 8008 down.
The pressure at which the gauge pointer stops or
suddenly drops is the opening pressure.
Opening pressure: 220 bar
NOTE: The pressure will build-up again in the area of
the spring after approx. 3 - 4 strokes. Slacken
the tensioning nut once again, re-tighten to
specified tightening torque and repeat the
test.