EMA -66
ENGINE MECHANICAL SYSTEM
4.
Inspect the piston ring side clearance.
Using a feeler gauge, measure the clearance between
new piston ring and the wall of the ring groove.
Piston ring side clearance
Standard
No.1 : 0.03 ~ 0.07mm(0.0012 ~ 0.0027in)
No.2 : 0.03 ~ 0.07mm(0.0012 ~ 0.0027in)
Oil ring : 0.06 ~ 0.15mm(0.0024 ~ 0.0059in)
Limit
No.1 : 0.1mm(0.004in)
No.2 : 0.1mm(0.004in)
Oil ring : 0.2mm(0.008in)
ECKD001G
If the clearance is greater than maximum, replace the
piston.
5.
Inspect piston ring end gap.
To measure the piston ring end gap, insert a piston
ring into the cylinder bore. Position the ring at right
angles to the cylinder wall by gently pressing it down
with a piston. Measure the gap with a feeler gauge. If
the gap exceeds the service limit, replace the piston
ring. If the gap is too large, recheck the cylinder bore
diameter against the wear limits. If the bore is over
the service limit, the cylinder block must be replaced.
Piston ring end gap
Standard
No.1 : 0.17 ~ 0.32mm(0.0067 ~ 0.0126in)
No.2 : 0.32 ~ 0.47m(0.0126 ~ 0.0185in)
Oil ring : 0.20 ~ 0.70mm(0.0079 ~ 0.0275in)
Limit
No.1 : 0.6mm(0.0236in)
No.2 : 0.7mm(0.0275in)
Oil ring : 0.8mm(0.0315in.)
ECKD001K
www.CarGarage.ir
www.CarGarage.ir
www.CarGarage.ir
