Page 1414 - Workshop Manual - Tunland (2017)

15-78 ENGINE MECHANICAL - PISTON & CONNECTING ROD ASSEMBLY

(a) Measure the clearance between the new
piston ring and the piston ring groove side
with a feeler gauge.
Second piston ring groove standard
clearance:
Minimum: 0.05mm

Maximum: 0.10mm
15
Third piston ring groove standard clearance:
Minimum: 0.04mm

Maximum: 0.09mm

CAUTION

• If the clearance do not meet requirements,
replace the piston.

13 . Check Piston ring opening clearance:

(a) Use the piston without piston ring to push the
piston ring into the 12.5mm from the top of
the cylinder and remove the piston.

(b) Measure the piston ring opening clearance
with a feeler gauge.
First piston ring opening standard clearance:
Minimum: 0.26mm

Maximum: 0.36mm
Second piston ring opening standard
clearance:
Minimum: 0.50mm

Maximum:：0.75mm
Third piston ring opening standard clearance:

Minimum: 0.25mm
Maximum:0.50mm