Daewoo D1146 Maintenance Manual page 34

Condition
5) Engine noisy
(1) Crankshaft
(2) Con.-rod and
Con.-rod bearing
(3) Piston, piston pin &
Piston ring
(4) Others
6) Fuel Consumption
Excessive
Causes
For noises arise compositely
such as rotating parts, lapping
parts etc., there is necessity to
search the cause of noises
accurately.
As the wear of bearing or
crankshaft progress, the oil
clearances increase.
Lopsided wear of crankshaft
Oil supply insufficient due to
oil passage clogging
Stuck bearing
Lopsided wear of con rod
bearing
Lopsided wear of crank pin
Connecting rod distortion
Stuck bearing
Oil supply insufficiency as
clogging at oil
progresses
Piston clearance increase
as the wear of piston and
piston ring progresses
Wear of piston or piston pin
Piston stuck
Piston insertion poor
Piston ring damaged
Wear of crankshaft, thrust
bearing
Camshaft end
increased
Idle gear end play increased
Timing gear
excessive
Valve clearance excessive
Abnormal wear of tappet,
cam
Supercharger inner
damaged
Injection timing incorrect
Fuel injection
excessive
30
D1146/D1146TI/DE08TIS
MAINTENANCE MANUAL
Remedies
Replace bearing &
grind crankshaft
Grind or replace
Clean oil passage
Replace bearing &
Grind
Replace bearing
Grind crankshaft
Repair or replace
Replace &
grind crankshaft
Clean oil passage
passage
Replace piston &
piston ring
Replace
Replace piston
Replace piston
Replace piston
Replace thrust bearing
play Replace thrust plate
Replace thrust washer
backlash Repair or replace
Adjust valve clearance
Replace tappet, cam
part Repair or replace
Adjust
amount Adjust injection pump
Printed in Jan. 2001 PS-MMA0415-E1A