Belarus 820 - Page 351

80-0000010B OM
351
End of table 7.1.1
Failure,
external manifestation, cause
Troubleshooting
When activating the starter the engine crankshaft does not turn through or
rotates too slow
Loose tightening of accumulator
terminals or oxidation of wire ta
g
s
Strip the wire tags and tighten the terminals
A
B discharged below the permissi-
ble limit
Charge or replace the AB
Manifold and brushes are dirt
y
Clean the manifold and brushes
Poor contact between brushes and
manifold. Brush wear exceeds the
p
ermissible norm
Take the starter off the engine, clean the manifold,
eliminate brushes’ sticking or replace them if they are
worn out
In the starter relay, surfaces of con-
tact bolts and contact plate that get
in contact during engagement, have
burnt
Clean the contacts of starter relay or set the contact
bolts in cover seats by turning around the axis by
180°, and reset the contact plate with the other side
Starter drive is out of orde
r
Re
p
lace starter drive
After en
g
ine start, the starter remains in en
g
a
g
ed condition
Contact plate has welded to contact
bolts of starter relay
Stop the engine, disengage the battery, then strip the
contacts of starter relay or set the contact bolts in
cover seats by turning around the axis by 180°, and
reset the contact
p
late with the other side
Starter armature rotates with high frequency without turning the engine
crankshaft
Ru
p
ture of fl
y
wheel crown co
g
s Re
p
lace the fl
y
wheel crown
Starter drive is out of orde
r
Re
p
lace the starter drive
Rou
g
h runnin
g
of starter rela
y
(
it en
g
a
g
es and instantl
y
disen
g
a
g
es the starter
)
Breaka
g
e of rela
y
retainin
g
windin
g
Re
p
lace the rela
y
A
ccumulator batter
y
is dischar
g
ed Char
g
e or re
p
lace the accumulator batter
y
Drive gear keeps failing to mesh with the flywheel crown with the normal re-
la
y
o
p
eration
Face wear of relieved part of fly-
wheel toothed rin
g
Relieve the flywheel teeth or replace the flywheel ring
Sticking of drive gear on rotor shaft
due to insufficient or missin
g
g
rease
Clean the drive and shaft from oil grease; apply
g
rease
Ц
ИАТИМ-201/203/221
Face wear of relieved part of drive gear
toothed rin
g
Relieve the teeth or replace the drive
V
oltmeter does not show the charge after engine start and further on during
o
p
eration time
If the relevant electrical circuits of
electrical equipment (Annex A, B, C)
are in good order, it means that the
alternator is fault
y
Remove the alternator and send it to a repair workshop
The alternator does not
g
enerate full power
The alternator is out of orde
r
Remove the alternator and send it to a re
p
air worksho
p
Accumulator batter
y
overchar
g
es on a re
g
ular basis
A
lternator voltage regulator is out of
orde
r
Remove the alternator and send it to a repair workshop
A
lternator is nois
y
Slip-through or overtension of the drive
belt
A
djust the tension of the alternator drive belt