CYLINDER BLOCK
14-10
PISTON RING SIDE CLEARANCE
Measure the clearance between each piston ring and
ring groove of the piston using a feeler gauge.
If any of the measurements is more than the service
limit, inspect the piston ring width.
If the piston ring width is normal, replace the piston
(page 14-6) and reinspect the clearance.
If necessary, replace the piston rings (top, second, oil)
as a set (page 14-6) and reinspect the clearance.
If any of the measurements is still more than the service
limit with the new piston rings, replace the piston (page
14-6).
PISTON RING END GAP
Before inspection, check whether the cylinder sleeve
I.D. (page 14-7) is within the specification.
Measure each piston ring end gap using a feeler gauge.
If any of the measurements is more than the service
limit, replace the piston rings (top, second, oil) as a set
(page 14-6).
CONNECTING ROD SMALL END I.D.
Measure the connecting rod small end I.D.
If the measurement is more than the service limit,
replace the connecting rod (page 14-6).
STANDARD:
Top/Second: 0.030 – 0.060 mm
(0.0012 – 0.0024 in)
SERVICE LIMIT:
Top/second: 0.15 mm (0.006 in)
STANDARD:
Top: 0.200 – 0.350 mm
(0.0079 – 0.0138 in)
Second: 0.350 – 0.500 mm
(0.0138 – 0.0197 in)
Oil (side rail) 0.20 – 0.70 mm
(0.008 – 0.028 in)
SERVICE LIMIT:
Top/Second: 1.0 mm (0.04 in)
Oil (side rail) 1.0 mm (0.04 in)
PISTON RING
EG3600CX/EG4000CX:
STANDARD: 18.005 – 18.020 mm
(0.7089 – 0.7094 in)
SERVICE LIMIT: 18.07 mm (0.711 in)
Except EG3600CX/EG4000CX:
STANDARD: 20.005 – 20.020 mm
(0.7876 – 0.7882 in)
SERVICE LIMIT: 20.07 mm (0.790 in)
82Z30000.book 10 ページ 2010年6月25日 金曜日 午後5時50分