Disassembly-assembly manual for tractor BELARUS-1221.2/1221
В
.2/1221.3/1221.4
199
Dismounting of metering pump:
а
) disconnect high-pressure sleeves 3, 4, 5 (Figure 7.1) and oil line 13;
b) unscrew four fastening bolts and disconnect metering pump 2;
с
) put metering pump in polyethylene bag.
Mount metering pump on tractor in reverse order.
Disassembly-assembly of metering pump:
ATTENTION!
Accounting for extraordinary complexity and responsibility of metering pump from
the point of view of steering safety, its disassembly and assembly can be performed only by
specialists of the manufacturer’s cervice centre (or another authorized service organization),
properly trained and qualified in design of metering pump, and well familiar with maintanance and
disassemble-assembly manuals, as well as when there are special necessary fixtures, tools and
special hydraulic test bench available to provide adjustment and verification of parameters of the
metering pump after repair. Otherwise, full responsibility for faulty metering pump rests with a
person who disassembles-assembles it, replaces parts or adjusts valves, and also with the tractor
owner.
ATTENTION!
Requirement
for disassembly-assembly of metering pumps also pertain to supply
pumps.
Dismounting supply pump:
а
) disconnect oil lines 11, 12 (Figure 7.1), by unscrewing bolts for fastening them to pump, extract
rubber rings from oil lines;
b) unscrew four fastening bolts to disconnect supply pump 8;
с
) put supply pump in polyethylene bag;
Mount supply pump on tractor in reverse order. Before assembly lubricate rubber rings with
grease LITOL-24 according to State Standard GOST 21150-87.
Dismounting hydraulic cylinders:
To dismount hydraulic cylinders 3, 4 (Figure 7.3) do the following:
а
) unscrew bolts 5, 6, 7, 8, take aside high-pressure sleeves 1, 2;
b) dismount pin 15, and to do this:
1) unbend whiskers of locking washer 9, unscrew nut 10;
2) remove washers 9, 11, cups of sealant 12, sealant of joint 13, spherical bushing 14;
Dismounting pins 16, 17, 18 is similar to pin 15;
с
) dismount hydraulic cylinders 3, 4;
d) wrap up outlet openings of hydraulic cylinders 3, 4 with polyethylene film and put the cylinders
inside polyethylene bag;
Mount hydraulic cylinders on tractor in reverse order, and replace copper rings for new ones.
Summary of Contents for Belarus 1221.2
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Page 125: ...Disassembly assembly manual for tractor BELARUS 1221 2 1221В 2 1221 3 1221 4 124 ...
Page 137: ...Disassembly assembly manual for tractor BELARUS 1221 2 1221В 2 1221 3 1221 4 136 Figure 4 166 ...
Page 138: ...Disassembly assembly manual for tractor BELARUS 1221 2 1221В 2 1221 3 1221 4 137 Figure 4 167 ...
Page 203: ...Disassembly assembly manual for tractor BELARUS 1221 2 1221В 2 1221 3 1221 4 202 Figure 7 5 а ...
