Belarus 1523, Operating Manual

Page: 274 / 312

BELARUS- 1523/1523В /1523.3 /1523В.3 Scheduled Maintenance
263
Procedure 37. Checking the Joints of
the Air Cleaner and the Engine Intake
Duct for Tightness
• Remove the monocyclon, start the en-
gine;
• Set a medium rotational speed of
idling;
• Block the intake pipe (1) of the air
cleaner. The engine shall stall in this
case;
•
If the engine is still running, locate and
remove leaks in the air cleaner and in-
take duct joints.
Procedure 38. Checking the Pneu-
matic System for Leak-Tightness
The air pressure drop in the pneumatic
system shall not exceed 200 kPa for the
period of 30 minutes with the brake con-
trols in a released state and compressor
switched OFF.
The air pressure in the bottle, which is
maintained by a regulator, shall be within
600...850 kPa.
Procedure 39. Checking the Bolts of
Clamps of the CAC Air Ducts for Tigh-
tening
Check, and tighten as necessary the
bolts of clamps of the CAC air ducts. The
torque of tightening of the bolts of clamps
of the CAC air ducts shall be 10 to 15
Н ⋅ м .
Procedure 40. Changing Oil in Oil
Tank of the RHL Hydraulic System
At a working temperature of oil in the oil
tank of the hydraulic system:
• screw out the filler neck plug (1);
• screw out the drain plug (3) and drain
oil from the oil tank into a vessel pre-
pared in advance;
• screw in the plug (3), pour fresh oil up
to the mark “П” (“F” – full) on the dip-
stick (2); refit the plug (1) back to its
place.