Minsk Tractor Works Belarus 1221.2, Руководство по разборке и сборке

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Disassembly-assembly manual for tractor BELARUS-1221.2/1221 В .2/1221.3/1221.4
234
8.8 Dismounting-mounting of air conditioner (option) mounted on tractors BELARUS-
1221.3/1221.4
ATTENTION! Any works that involve disconnection of cooling loop elements, must be performed
by trained personnel and use special equipment for maintenance of air conditioners. When set of
quick-connecting connections BRS-81 is available, cooling loop can be disconnected without
pumping out cooling agent. Even non-operational system maintains high pressure!
Air conditioning system is filled with cooling agent R 34 a. It doesn’t erode ozone layer, is not
toxic, not poisonous in small quanities, still when in contact with open flame it decomposes and
emits poisonous gas – fluorine hydride. Under normal conditions temperature of agent boiling is 27
0
С . If liguid cooling agents contacts skin it instantaneously evaporates, and this may cause thermal
burn.
IMPORTANT: Only specially trained personnel can be admitted for maintenance and repair of air
conditioning system elements .
ATTENTION!
The engine cooling system can be filled only with non-freezing fluid.
To dismount air conditioning system from tractor do the following (figures 8.13, 8.14):
а ) dismantle sealing rings 80-3723045-01 (1), which fasten hoses of air conditioner to tractor
parts;
Figure 8.13 Dismounting air conditioner from engine MMZ.