Page 1415 - Workshop Manual - Tunland (2017)

ENGINE MECHANICAL - PISTON & CONNECTING ROD ASSEMBLY 15-79

CAUTION

• If the opening clearance still do not meet
requirements after replace a new piston
ring, bore cylinder or replace the cylinder
block.

14 . Piston protrusion check:
15
(a) Measuring piston protrusion with depth gauge
assembly. If the piston protrusion exceeds
the range, check whether the piston is
mounted properly or the flatness of cylinder
block.
Piston protrusion standard value:

Minimum: 0.034mm
Maximum: 0.260mm

15 . Connecting rod bearing oil clearance check:

(a) Screw out the connecting rod bearing cap
fixing bolt, and take off the connecting rod
bearing cap.

CAUTION

• If the connecting rod bearing cap is
difficult to be removed directly, knock it
loose with the rubber hammer.

(b) Clean crankshaft connecting rod journal and connecting rod bearing, and check whether
there is any dent or abrasion mark.

(c) The plastic gauge at the arrow across the
crank.