MTZ 1220.1/1220.3
Section J. Possible failures
М
3
Defect, external manifestation
Way of elimination
Oil pump is defective.
Reveal defects and eliminate.
Oil level in diesel engine case is below ad-
missible.
Add oil up to top label of oil meter core.
Jamming of safety valve in diesel engine
case of oil filter.
Wash out valve and adjust pressure in sys-
tem of greasing.
Limiting wear of interfaces of neck of diesel
engine case — bearings.
Remove defect.
Turbocompressor
Rotor of turbocompressor does not rotate (there is no specific sound of high tone)
Presence of extraneous subjects interfering
rotation of rotor.
Remove glow tube and outlet pipe, remove
extraneous subjects.
Jamming of rotor in bearing.
Replace turbocompressor.
Increased emission of oil from the side of
compressor or turbine, infringement of
tightness of oil compaction of turbocom-
pressor.
Remove turbocompressor from diesel en-
gine and send to workshop for repair.
Units of system of automatic control of clutch of fan
At temperature of water at output from diesel engine above 97°
С
fan of cooling
system does not switch off, or at temperature of water below 70°
С
fan of cooling
system does not switch off.
Defect in thermo power gauge or fan clutch. Remove clutch of fan.
Press rod into water pump against arrester
and measure its overhang.
Start diesel engine and warm up it to tem-
perature of water 80-85°
С
on output; stop
diesel engine and measure overhang of rod
from water pump:
1. If over hang of rod has not increased in
comparison with initial, replace thermo
power gauge;
2. If overhang of rod increased for 6-8 mm,
replace fan clutch; defective fan clutch send
to workshop for repair. At impossibility of
replacement of fan clutch it is supposed to
block it according to above-mentioned me-
thod.
Summary of Contents for 1220.1
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Page 161: ...MTZ 1220 1 1220 3 Section I Coupling of implements I15...
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