Page 1411 - Workshop Manual - Tunland (2017)

ENGINE MECHANICAL - PISTON & CONNECTING ROD ASSEMBLY 15-75

(a) Press out connecting rod small bushing from
the connecting rod.

15

7 . Piston cleaning:

(a) Clean the carbon deposition in the piston ring
groove with piston ring groove cleaner or
fractured piston ring.
(b) Thoroughly clean the piston and piston ring
groove with volatile solvent and soft brush.

CAUTION

• Can not use a steel brush to clean the
piston.

8 . Remove the 1st and 2nd gas rings and the oil ring:
CAUTION

• Clean the carbon residue on the surface of the piston and inside the gas ring,
as well as the grease inside the oil ring.

• Be careful not to scratch the piston surface.

CAUTION

• Check whether there is damage, over wear or crack on the piston ring and replace
it if any. If replace the piston, must replace the piston ring together.

(a) Remove the first gas ring and second gas
rings from the piston with a piston ring
expander.