MTZ 1220.3 - Block of Heating and Cooling of Air in Cabin; Pneumatic System

MTZ 1220.1/1220.3 Section М. Possible failures
М10
Defect
,
external
manifestation
Way of elimination
After
starting
diesel engine
starter
remains
in
engaged position
Power disk has sticked to contact bolts of
starter relay.
Stop diesel 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.
Noise of
g
enerator
Slipping or ex
treme tension of generator
belt.
Remove generator and send it to work
shop
for repair. Adjust tension of genera
tor drive
belt.
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 regu
larity,
and check fan turn-on circuit.
Warm
air
of
high
h
u
midity
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 dam-
aged
Reveal places of outflow and eliminate them
by tightening of connections or by replace-
ment of damaged parts.
•
Rubber sealing of connecting head is
damaged
Replace damaged sealing.
•
Tie of nut conn
ecting head sealing ring
is weakened
Tighten.
•
Dirt hits under valve of connecting
head
Clean.
•
Contact of dustproof cover with rod of
connecting head valve
Remove.
•
Parts of valve are deformed: diaph-
ragm is torn, fastening of cover in
brake valve is weakened
Check conditions of valve parts, in case of
necessity change them, tighten bolts of fas-
tening.
•
Adjustment of valve drive is disturbed.
Adjust (see section “Adjustments”).
•
Work of pressure regulator is disturbed
Remove and send to workshop for repair.
In your tractor is equipped with regulator 80-
3512010,
adjust it according to the Section
“Adjustments”