M 14.20 Injector - Hatz Diesel 1D30 S Workshop Manual

M 14.00 Fuel-injection equipment

M 14.20 Injector

- 25 -
Preparations:
Ref.: M-Disassembly cross reference
scheme.
Dismantling:
– Remove in numerical sequence 1...5.
– Loosen and remove injector 6 by turning
or pulling.
For removal use tool - 25 -
– Remove seal ring 7 either from injector
or cyl.-head.
Inspection / repair:
– Check nozzle body for overheating or
plugged spray holes.
If possible test injector using a nozzle
tester or contact your nearest HATZ-Dis-
tributor or any other authorized work-
shop.
– Check injector pressure according to fig-
ure as stamped into nozzle-holder body.
– Check spray pattern for proper
atomizing.
ATTENTION !
Keep your hands away from the nozzle
spray. The jet of a spraying nozzle can
cause blood poisioning.
For further repair proceed as follows:
– Dismantle injector 6 in numerical se-
quence 8...14.
– Check nozzle 9...9/1 for plugged spray
holes, worn nozzle needle (scoring,
overheating) and/or any other damage.
Nozzle body and nozzle needle must not
be interchanged !
3
1D . . / 03.06
– Clean all parts carefully but do not use
hard objects, brushes etc.
Nozzle needle has to slide free by its
own weight !
– Assemble in reverse sequence 14...8.
Torque to specification !
– Check and adjust injection pressure by
changing shim 13 if necessary.
Assembly:
– Clean bore in cyl.-head carefully.
– Put seal ring 7 onto injector using some
grease.
Always use a new seal ring !
1 D 60 / 1 D 80 only:
The soft, graphite-coated sealing surface
must point towards the injector.
– Place injector 6 with seal ring 7 carefully
into cyl.-head.
Ensure seal ring 7 remains in position
during assembly.
– Assemble in reverse sequence 5...1.