2122.6-0000010 OM
192
5.4.4.4
Operation 81. Change of HLL pump filter
HLL pump filter 1 (figure 5.4.35) is mounted near HLL oil tank 2.
1 – HLL pump filter; 2 – HLL tank.
Figure 5.4.35
– Change of HLL pump filter
The HLL filter shall be replaced when annunciator 18 (figure 2.15.1) located on CECS
lights up (and continuously glows).
HLL pump filter shall be replaced as follows:
-
after annunciator 18 goes off and starts to glow continuously kill the engine, engage
the parking brake;
-
clean the installation place of the HLL pump filter from dirt;
-
screw the HLL pump filter out;
-
wipe the pump mounting face and apply clean oil used for HLL;
-
refill new HLL pump filter with clean oil, used for HLL and screw the filter back.
5.4.4.5
Operation 82. Change of fine filtering package and rinse of coarse filter
in end plate of HLL integrated unit.
If during operation of the distributor sections the fault code indicator for one or more sec-
tions shows fault code “23” this means either impurity of the fine filter or metal-ceramic coarse fil-
ter, or absence of voltage at actuating electromagnet of the reduction valve, or failure of the elec-
tromagnet of the reduction valve, or impurity of the reduction valve.
It is required to proceed as follows:
- check availability of voltage at the actuating electromagnet connector (figure 6.13.3)
with the engine running. It shall make 11 to 15V. If voltage is lower or missing contact Your
dealer to eliminate the break or other failure in the wiring;
- if the required voltage is available measure coil resistance. It shall make 4 to 6 Om at
the ambient temperature of 15
°
С
to 35
°
С
. If coil resistance is higher or lower than the speci-
fied limits contact Your dealer to replace the coil of the actuating electromagnet;
- if the wiring and the actuating electromagnet are in working order, it is required to
rinse the metal-ceramic coarse filter located under blind plug 1 (figure 6.13.4) and replace the
fine filter located behind cover 1 (figure 6.13.2), rinse the reduction valve.
To remove the coarse filter from the end plate it is required to dismount the blind plug us-
ing 10 mm hexagon wrench, and then screw the coarse filter out of the end plate using 5 mm
hexagon wrench and remove it with pincers. Rinse the coarse filter in clean diesel fuel, bleed it
with compressed air, mount the clean filter into the end plate. If it is not possible to clean the
coarse filter properly by way of rinsing and bleeding it shall be replaced.
To remove the fine filter from the end plate it is required to dismount the cover by taking
out two bolts with 5mm hexagon wrench. Mount a new filter into the end plate.
It is recommended to let dealer rinse the reduction valve.
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