Geely CK MR479QA 2007 User Manual

79
II. Crankshaft connecting rod noise diagnosis and troubleshooting
1. crankshaft connecting rod noise cause and troubleshooting
2. Piston ring leakage, knock and noise causes and troubleshooting
Noise cause Elimination method
Piston ring broken Replace
Excessive piston ring backlash Replace
Piston ring contra aperture Correct (stagger)
Piston ring is locked Replace
Insufficient elasticity of the piston ring Replace
Poor seal between te piston and cylinder wall Replace
N
o.
N
oise area
N
oise cause Troubleshootin
g
Excessive connecting rod bearing radial
p
la
y
Replace the bearing
Connecting rod cover bolt loosene
d
Tighte
n
Connecting rod bearing insert dimension
not as specified result in rotation or
rupture
Replace the insert
Connecting rod bearing insert burne
d
Replace the insert
Poor lubrication for connecting rod
b
earin
g
Drill the lubricant hole to normal,
improve the lubricant line
Excessive main bearing raidal play Replace the main bearing
Main bearing cover bolt loosened Tighten
Main bearing insert burned Replace the insert
Poor lubrication for main bearing
Smoothen the lubricant line or
enlarge the oil hole
Main bearing insert dimension not as
specified result in rotation or rupture
Replace the main bearing insert
Excessive crankshaft bearing raidal play Adjust (pad) to normal
Excessive wear of the cranshaft thrust
washer
Replace the thrust washer
4
Flywheel
impact noise
Flywheel set bolt loosened Tighten
3
Crankshaft
axial runout
noise
Connecting rod
bearing noise
1
Main bearing
noise
2

Geely CK MR479QA 2007 Specifications

General

Brand	Geely
Model	CK MR479QA 2007
Category	Automobile
Language	English