82.3-0000010 OM
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5.4.8 General maintenance services
5.4.8.1 General guidelines
Carry out maintenance service operations, listed in this subsection 5.4.8 as may be
necessary (i.е. when respective pressure sensor or dirtiness sensors respond).
5.4.8.2 Operation 61. Adjustment of oil pressure in the engine lubrication system
Watch constantly oil pressure value in the engine lubrication system on oil pressure in-
dicator 1 in figure 2.6.5, located in the dashboard (as the engine is running with a rated speed
and the coolant temperature is 85 to 105°С, the oil pressure shall stay at the level of 0.25 to
0.35 MPa, it is admitted that the pressure value be up to 0.8 MPa on the cold engine);
If the lubrication system is in good order (oil pipeline joints are tight, the safety valve in
the oil filter is in good order, etc.), but the lubrication pressure value constantly exceeds 0.35
MPa or is constantly below 0.25 MPa during the engine running at the rated speed with the
normal coolant temperature, it is required to adjust oil pressure in the engine lubrication sys-
tem.
Adjust the oil pressure in the engine lubrication system as follows:
- unscrew plug 3 (figure 5.4.57), remove gasket 4;
- using screwdriver 6 turn adjusting plug 5 in the channel of oil filter body 2 by one turn
to the side of increasing or decreasing the pressure value (depending on the actual pressure);
- mount gasket 4 and screw plug 3 in;
- if required repeat the above adjustment operations.
IT IS FORBIDDEN TO ADJUST OIL PRESSURE IN THE LUBRICATION SYSTEM AS
THE ENGINE IS RUNNING.
1 – oil filter; 2 – oil filter body; 3 – valve plug; 4 – plug gasket; 5 – adjusting plug; 6 –
screwdriver; 7 – liquid and oil heat exchanger.
Figure 5.4.57 – Adjustment of oil pressure in the engine lubrication system
In order to avoid damage to the rubber gaskets of the oil filter and the liquid and oil heat
exchanger, it is forbidden to screw adjusting plug 5 in completely (figure 5.4.57). The maxi-
mum allowable size from the end face of the filter housing boss to the adjusting plug should be
no more than 25 mm, as shown in figure 5.4.58.
Figure 5.4.58 – Maximum allowable size
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