Dinli DL-702 2008, Service Manual

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ENGINE
【
6-35
】
Piston
Piston Diameter
● Check for wear and damage on the sliding surface.
● Measure OD of Piston at the position shown in the picture. If the
measurement is less than the limit, replace the piston.
Piston OD
Service limit 101.880 mm
Micrometer (100 – 125 mm)
Recognize Piston
● The top of piston was printed
“
A
”
and
“
B
”
.
● A Piston has to be matched with A cylinder ;
B Piston has to be matched with B cylinder .
Piston Rings
Clearance between Piston Ring and groove
● Measure the clearance between Piston Ring and groove, by holding
the Ring upwards in the groove, with thickness gauge.
● If any of the clearances exceeds the limit, replace both piston and
piston rings.
Service Limit of clearance
First 0.180 mm
Second 0.150 mm
Piton ring groove width
Standard First 1.21 ‐ 1.23 mm
Second 1.21 ‐ 1.23 mm
Oil 2.01 ‐ 2.03 mm
Piton ring thickness
Standard
First 1.17 ‐ 1.19 mm
Second 1.17 ‐ 1.19 mm
Thickness Gauge
Micrometer (0 – 25 mm)