Page 484 - Foton Workshop Manual - Sauvana

12C-44 ENGINE MECHANICAL SYSTEM - CYLINDER BLOCK SYSTEM

(i). Fit the piston ring into the ring groove, and
then use the clearance gauge to measure
the clearance between the ring and the ring
groove.
PROMPT:
Before inspection, the piston ring groove must be
cleaned and dried without any carbon deposit.
Backlash of piston ring groove:
First ring: 0.04 ~ 0.08 mm
fuwx12C111 Second ring: 0.03 ~ 0.07 mm

(j). Insert the piston ring into the cylinder, and
use the clearance gauge to measure the
end clearance of each piston ring as shown
in the figure.
First ring: 0.5525 ~ 0.9575 mm
Second ring: 0.6525 ~ 1.0575 mm
First ring: 0.04 ~ 0.08 mm
Second ring: 0.03 ~ 0.07 mm

fuwx12C112

18 . Install the piston subassembly
(a). Install the piston pin onto the piston and
the connecting rod in the arrow direction.
NOTICE:
The forward-pointing mark on the piston shall be
in the same direction with the raised part of the
connecting rod big end.
PROMPT:
Apply a suitable amount of lubricating oil onto the
fuwx12C113 piston pin outer wall, connecting rod small end
hole and piston pin hole.

(b). The piston pin snap ring (arrow direction)
shall be fitted in place, and all rings shall
be located in the snap ring groove, with
their openings pointing to the opposite of
the piston pin snap ring mounting hole.

fuwx12C114

Page 484