64 5.4.2 Preparing The Injection Chamber - Bosch CRI/CRIN 848H Manual Original

4
3
Fig. 71: Fitting injector
1 Injector
2 Connection adapter
3 Inlet connector
4 Connection piece for high-pressure hose
5.4.2 Preparing the injection chamber
1. Check the injector nozzle retaining nut shape:
A) B)
Fig. 72: Nozzle retaining nut shape
A) Flat
B) Conical
Robert Bosch GmbH
Preparing for testing | CRI/CRIN 848H | 85
2. Select appropriate guide sleeve version. Guide
sleeves with various inside diameters for injectors
with a flat nozzle retaining nut are included in the
scope of delivery.
1
2
Fig. 73:
1 Injector with flat nozzle retaining nut
2 Injector with conical nozzle retaining nut
3 Guide sleeve for injector with flat nozzle retaining nut
4 Guide sleeve with O-ring
nozzle retaining nut
5 Ecopur sealing ring
6 Injection chamber
!
The guide sleeve selected for an injector with a flat
nozzle retaining nut (see Fig. 73, Pos. 1) must not be
too small of too large (see Fig. 74). It must be easy
to push the guide sleeve onto the nozzle retaining
nut of the injector. If the guide sleeve sticks when
it is pushed on, this means that either the injector
nozzle retaining nut or the inner surface of the guide
sleeve is very dirty or damaged. In either case, do
not use the injector or guide sleeve.
A)
Fig. 74:
A Guide sleeve with overly small inside diameter
B Guide sleeve with correct inside diameter
C Guide sleeve with overly large inside diameter
1
3
5
6
Mounting version
⌀
6.5 x 4 mm for injector with conical
B)
Guide sleeve with injector
1 689 989 087
en
2
4
458847-56_Pal
C)
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2018-07-24