Minsk Tractor Works Belarus 1221.2, Disassembly-Assembly Manual

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Disassembly-assembly manual for tractor BELARUS-1221.2/1221 В .2/1221.3/1221.4
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Make assembly and mounting of parts and assemblies of clutch control in sequence reverse to
disassembly. Before assemblying main and working cylinders hydraulic boosters must be clean.
Presence of foreign particles (dust, paint, chips, pile) is not allowed.
Before assembly of main cylinder and working cylinder on reversal grease friction surfaces with
thin layer of braking fluid NEVA-M under Specification TU 2451-053-36732629-2003. Avoid ingress
of mineral oil, benzene, kerosine and diesel fuel on parts, as these substances lead to swilling of
rubber sealants.
Make adjusting and pumping of clutch control hydraulic system according to “Operating
manual of BELARUS-1221 В ”
4.3.2 Disassembly-assembly of clutch coupling
1 – driven disk; 2 – bushing; 3 – middle disk; 4 – squeeze disk; 5 – thrust; 6, 14, 24 – washers; 7 –
cotter pin; 8 – pin; 9 – squeeze lever; 10 – yoke; 11 – special spring; 12 – supporting disk; 13 –
retaining plate; 15 – bolt; 16, 19 – spring washer; 17 – adjustment nut; 18 – nut; 20 – cup; 21 –
squeeze spring; 22 – insulating washer; 23 – plate; 25 – special bolt; 26 – lever axle; 27 – metal
ceramic bushing; 28 – divider lever; 29 – spring; 30 – retaining washer.
Figure 4.12
а ) via technological openings of supporting disk 2 screw inside squeeze disk (Figure 4.13) three
bolts 1 (Ml2x40) to squeeze springs;
b) unscrew six nuts 3 and remove supporting disk 2 together with squeeze disk;
c) dismantle six supporting bushings 4;
d) dismantle driven disk 5;
e) dismantle middle disk 6;