BELARUS-
1523/1523В
/1523.3
/1523В.3
Scheduled Maintenance
251
EVERY 125 HOURS OF OPERATION
perform the following procedures:
Procedure 9. Checking/Adjusting the
Tension of the Air-Conditioner Com-
pressor Driving Belt
The tension of the belt (3) is considered
normal, if sagging of its section between
the tensioning lever pulley and the com-
pressor pulley”
as measured at the mid-
dle point would be within 4 to 6 mm when
pushing with the force of (39.2
±
2.0) N.
The tensioning of the belt (3) for driving
the air-conditioner compressor (2) should
be adjusted by turning the tensioning
lever (1) on the rotating axle (
А
) and
threaded connection clamp (
Б
) in the slot
(
В
) of the plate (
Г
); the belt sagging
when pushing with the force of
(39.2+2.0) N applied in perpendicular to
the belt section at its middle point shall
be within 4 to 6 mm.
Procedure 9a. Greasing the Pivot
Points of the HPS Cylinders
Using a lubricating gun, grease the piv-
ots through the lubricating plugs (2) (4
lubricating points).
Procedure 10. Greasing the Bearings
of the FDA Pivot Supports of the Hub
Reduction Gear and the Pivot Centre
Bushings
•
Gun-grease the lubricators (3) by
making 4 to 6 strokes (4 lubricating
points).
•
Gun-grease the lubricator (4) with the
above-said lubricant until fresh grease
is squeezed through gaps.
5 – pivot centre bushing.
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