Disassembly-assembly manual for tractor BELARUS-1221.2/1221
В
.2/1221.3/1221.4
235
Figure 8.14
Dismounting air conditioner from engine Deutz.
b) if set of quick-connecting connections BRS-81 (2) is available, undock cooling loop by means of
wrenches “S29” and “S30”.
с
) while preventing connection pipes (fittings) of air conditioner hoses from unwinding, dismount
compressor (3), filter-dehydrator (4) and condenser (5).
d) filter-dehydrator (4) is dismounted by loosening collars that fasten it.
e) to dismount condenser (5) unscrew four nuts that fasten it to arms.
f) heater-cooler (6) is nor dismounted, as half-clutches of the set of quick-connecting connections
BRS-81 (2) can not be passed between cabin posts.
g) if the set of quick-connecting connections BRS-81 (2) is not available, after cooling agent is
discharged from the system, the disassembly of air conditioning system can be made in any
sequence and requires no special directions.
h) dismantling of heating system after draining fluid from engine heating system requires no
special directions.
To drain cooling fluid from diesel heater and cooling system
do the following:
а
) place tractor on horizontal terrain;
b) remove expansion tank plug, open drain cocks of radiator, diesel block of cylinders and heater,
с
) take heater hose off the valve.
After filling the cooling system with cooling fluid:
а
) start diesel and without opening the valve let diesel operate at middle speed to heat cooling
fluid in the cooling system up to 70-80°
С
, and after that open the valve, increase diesel rotation
speed and let it operate for 1-2 minutes until heater radiator is filled with fluid;
b make sure fluid is circulating through the heater;
с
) Heater radiator must be be warmed up;
Summary of Contents for Belarus 1221.2
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