ADJUSTMENT
A 178 A 179
ADJUSTMENT OF INJECTORS
Injectors are adjusted by the instrument
NV 50 or by the portable tester NV 251,
that enables injector inspection directly
on the engine without its disassembly.
The inspection process is described in
instruction manual of testers produced
by Motorpal Jihlava. The injector open-
ing pressure is 18,6-0,8 MPa at engines
Z 5202, Z 6202, Z 7202, Z 7702 and Z
7302. Adjust the pressure to the upper
limit of tolerance. If the injector is
removed at the inspection, the sitting
surface for injector in the cylinder head
must be properly cleaned before injector
reassembly. Repaired and adjusted in-
jector must be cleaned and the injector
body needs to be coated by vaseline LT
2.
ATTENTION:
Pay the special attention for correct po-
sition at reassembly of injector into the
engine. Position the injector in cylinder
head that way the injector neck is
maximally 1,5 mm from the bolt.
BRAKE PEDAL FREE TRAVEL AD-
JUSTMENT
The correct play between the brake
pedal piston rod and the main brake
valve piston is 0,5-1,0 mm. Adjust the
play with unlatched pedals and after
releasing of piston rod adjusting nut (1).
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