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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1-body, 2-stop ring, 3-plunger, 4-guide ring
5-collar, 6-mud retainer.
Figure 9.3 Plunger cylinder design:
с ) turn plunger around axis so that cut on the stop ring faced the opening;
d) put screwdriver inside opening and place one edge of stop ring inside mounting groove;
e) while retaining the ring inside mounting groove, rotate plunger until stop ring entirely moves
inside mounting groove;
f) pull plunger out of body 1.
During assembly: perform operations in reverse sequence, having first washed and lubricated all
parts, and cheched state of stop ring 2, mud retainer 6, guide rings 4, collars 5 and plunger 3. When
inserting plunger inside mud retainer, carefully spread mud retainer jaws across plunger surface,
tucking of jaws is not allowed.
Design of cylinders 90 mm in diameter is not described, as they are of piston design, well known
in operation and have no any specific design features.
Adjusting control wire ropes:
а ) disconnect wire ropes 7 (Figure 9.1) from levers 42 and 43;
b) put both levers, 42 and 43, to extreme front positionso that hinge lowered down to fully drawn in
position of cylinders 4;
с ) using nuts on ropes’ shells that fasten them to arm 8 in the cabing side panel, adjust travel of
handles 11 and 12 to cover entire zone on panel cover marked with figures;
d) put position handle 12 to mark “9”, and power handle 11 to mark “4”;
e) turn levers 42 and 43 back until clearances are closed (until resistance of distributor return
spring is felt);
f) using nuts that fasten shells of ropes to arm 13, adjust length of free ends of ropes until pins of
ropes coinside with openings in levers 42 and 43;
g) insert pins in openings and cotter pin them.