Fuel Injector
Maintenance / Adjust
A5.05. 07.08.01.00
M20
en / 03.06.1998 IB001410 2/2
07
Ĺ
Sequence of operations:
1. Remove carbon deposits from the
nozzle with a hard brush (no wire
brush).
2. Check the nozzle holes for sharp edges,
ovalization, corrosion and damage.
3. Place the injector with adapter (Fig. 1/
W2) in the nozzle tester (W1) and con-
nect the pressure pipe (W3).
4. Increase the pressure gradually via the
pump until the nozzle opens. See the
nozzle opening pressure in the accep-
tance test records A1.10.
4.1 Loosen the counternut if the opening
pressure (1) is not correct and adjust it
with screw (2). Retighten the
counternut (1).
1
2
W1
Fig. 1
W3
W2
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