Action 5а. Checking/adjustment of the
tension of the air-conditioner com-
pressor driving belt
The tension of the air-conditioner
compressor driving belt (1) is considered
to be normal, if deflection of its section
“engine crankshaft pulley – compressor
pulley” measured in the middle is within
4…6 mm under application of the force
of (39 + 2,0) N in perpendicular to the
middle of the section.
The tension of the belt (1) shall be
adjusted by rotating the compressor (2)
on the rotation shaft (А) and clamp of the
threaded connection (Б) in the slot of the
sector (В). After adjustment, the belt de-
flection caused by the force of (39 + 2.0)
N applied in perpendicular to the middle
of the section, shall be from 4 to 6 mm.
Action 6. Oil level in the casings of
the upper bevel pairs of the FDA with
the bevel reducing gears (MTZ-
920/952)
Check that the oil level coincides with the
lower edge of the oil-filling opening (1). If
necessary, add oil.
Action 7. Draining the deposit from the
fuel tanks and fuel coarse filter
Open the drain plugs (1) of the fuel tanks
(2) and the drain plug (3) of the filter and
drain the deposit until clean fuel appears.
Drain the deposit into a special tank and
dispose it properly.
Close the drain valves after appearance of
clean fuel without water and dirt.
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