Belarus 1221.2, Руководство оператора

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BELARUS-1221.2/1221 В .2/1221.3 Possible defects and ways of their elimination
224
Defect, external manifestation Way of elimination
collector, remove hang-up of brushes and
replace them in case they are worn out.
Adjustment of solenoid starter switch is dis-
turbed.
Adjust relay.
Blocker of engine start has actuated or its
switch is faulty.
Install levels of gear box in neutral position,
check running order of switch. In case of
necessary, adjust position of switch with
help of adjusting washers.
Engine is not ready to start at temperature
below + 5 ° С .
Prepare engine for start at low tempera-
tures.
After starting engine starter remains in engaged position
Power disk has sticked to contact bolts of
starter relay.
Stop engine, switch off battery by switch of
“mass” and smooth out contacts of solenoid
starter switch.
Drive gear does not jump out of mesh with
crown of fly-wheel due to defect in spring of
wishbone lever.
Replace return spring of wishbone lever.
Starting aid electromagnetic valve does not work
Lack of contact in chain of electromagnet
spool.
Check chain, tighten contacts of wires fas-
tening.
Noise of enerator
Slipping or extreme tension of generator
belt.
Remove generator and send it to workshop
for repair. Adjust tension of generator drive
belt.
Electric tachospeedometer
See defects of tachospeedometer in section “Operating controls and instruments”.
Block of heating and cooling of air in cabin
Warm air does not move to cabin
There is no circulation of water through block of heating
Cock on head on cylinders block s closed Open cock.
Ice plugs in hoses of heater Split ice, leak through hoses hot water.
Fan of heater does not work. Remove fan defect, check fan regularity,
and check fan turn-on circuit.
Warm air of high humidity enters cabin
Outflow of water in heater radiator. Remove outflow of water or replace radia-
tor.
Water leakage in connections of heating
system.
Tighten coupling collars.
Pneumatic system
Pressure in receiver increases slowly
Outflow of air from pneumatic system
Nuts of pipelines, armature, coupling collars
are poorly tightened or damaged
Reveal places of outflow and eliminate them
by tightening of connections or by replace-
ment of damaged parts.
Rubber sealing of connecting head is dam-
aged
Replace damaged sealing.
Tie of nut connecting head sealing ring is Tighten.