CF MOTO CF1000ATR 2018, Руководство по обслуживанию, Страница: 140 / 365

5.2 Intake Pipe, Cylinder Head and Cylinder Body
05-65
1 Correct Position of the Piston Circlip
1 Feeler Gauge 2 Piston
056502
Note: Take care that the hook of the
piston circlip is positioned properly.
5.2.15 Piston Rings
Remove the piston.(see PISTON)
Ring Inspection
Ring/Piston Groove Clearance
Use a feeler gauge to measure each ring/
piston groove clearance. If the clearance
is too large, the piston and piston rings
should be replaced.
Piston ring/groove clearance
Piston ring ( 1 )
New
0.020 mm~0.060 mm
(0.0008 in~0.0024 in)
Service limit 0.150 mm(0.0059 in)
Piston ring( 2 )
New
0.020 mm~0.060 mm
(0.0008 in~0.0024 in)
Service limit 0.150 mm(0.0059 in)
Oil ring
New
0.030 mm~0.150 mm
(0.0012 in~0.0059 in)
Service limit 0.250 mm(0.0098 in)
Place the ring in the cylinder in the area
of 8-16mm(5/16-5/8in) from top of cylinder
when measuring the ring end gap.
Piston ring gap clearance
Piston ring ( 1 )
New
0.15 mm~0.30 mm
(0.006 in~0.012 in)
Service limit 1.50mm(0.059 in)
Piston ring ( 2 )
New
0.15 mm~0.30 mm
(0.006 in~0.012 in)
Service limit 1.50 mm(0.059 in)
Oil ring
New
0.20 mm~0.70 mm
(0.008 in~0.028 in)
Service limit 1.50 mm(0.059 in)
Note: In order to position the ring in the
cylinder correctly, use piston as a pusher.
Use feeler gauge to measure the open
clearance. If out of specification, replace
the rings and measure the cylinder bore.
056501
1
1
2