2)Measurement
.Closed clearance of piston ring
.Install the piston ring to the cylinder,pull for-
ward about 20mm(0.8 in),then pull the piston
ring with piston top to make it vertical with cyl-
inder wall.
.Use feeler gauge ¢Ù
If out of specification replace a set of ring
You cannot measure the closed clearance of
scraping place of oil ring assy,if the clearance
of scraping plate is bigger,replace a set of oil
ring
Caution
0.03-0.07mm 0.12mm
(0.001-0.003 in) (0.005 in)
0.02-0.06mm 0.12mm
ring (0.008-0.024 in) (0.005 in)
Clearance between piston ring and ring groove
First ring
Standard
Limit
Second
ring
0.25mm
0.25mm
0.4mm
close clearance
Piston
ring 1
Standard
Limit
Oil ring
Piston
ring 2
¡ý
¡ü
20mm(0.8 in)
- 167 -
0.35mm
0.35mm
0.7mm
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