Technical data

59
4.2 Current repair of diesel engine components
Description of
malfunctions
Possible reasons
Instructions for re-
pair of assembly
parts
Instructions for repair
Water pump
1.Leak of
cooling liquid
from drainage
hole
1.1.Wear of con-
tact surfaces of
face seal
1.2 Wear of bear-
ing mount
1.1Control the level
of cooling liquid in
the cooling system
1.1.1 Inspect the
water pump on the
working engine after
start-up at the peri-
od of heating
1.2 Control the ra-
dial backlash in the
bearing mount
Dismantle the water
pump from diesel en-
gine and disassemble it
Replace the water pump
seal
Replace the bearings
and water pump case (if
it is necessary).
2.Water pump
vibration and
advanced
noise
2. Wear of bearing
mount
2.1 Control the ra-
dial backlash in the
bearing mount
Dismantle the water
pump from diesel engine
and disassemble it
Replace the bearing and
water pump case (if it is
necessary).
3.
Absence
circulation of
cooling liquid
in the cooling
system
Turning impeller
of the pump shaft
At the control of
temperature of die-
sel engine cooling
system it is visible
temperature excur-
sion of cooling liq-
uid.
Dismantle the water
pump from diesel engine
and disassemble it
Replace the impeller
and(or) pump shaft