Engine Noisy - KIRLOSKAR DV Series O & M Manual

For noises arise compositely such as rotating parts, lapping parts etc.,
there is necessity to search the cause of noises accurately.
1. Crankshaft
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
2. Con rod and Con rod bearing
Lopsided wear of con
rod bearing
Lopsided wear of crank pin
Connecting rod distortion
Stuck bearing
Oil supply insufficiency as
clogging at oil passage
progresses

10. Engine noisy

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
----- Continued
97