Cylinder Block, Liners, Pistons, And Rods - Yanmar YM276 Service Manual

Specifications andspacial Tools 20-00-3
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Cylinder Block, Liners, Pinons and Rods
ITEM NEW +ART SPECIFICATIONS WEAR LIMIT
Piston Ring-Groove Clearance
Top ring
. . . . . . . . . . . . . . . . . . . . .
0.065 to 0.1000 mm (0.0015 to 0.004 in.)
. . . . . . .
0.30 mm (0.012 in.)
Semnd ring
. . . . . . . . . . . . . . . . . . .
0.035 to 0.070 mm (0.0014 to 0.003 in.)
. . . . . . .
0.25 mm (0.010in.)
Oil ring
. . . . . . . . . . . . . . . . . . . . . .
0.020 to 0.055 mm (0.0008 to 0.0022 in.)
. . . . . . .
0.25 mm (0,010 in.)
Piston Ring Gap
Top ring
. . . . . . . . . . . . . . . . . . . . .
0.25 to 0.45 mm (0.009 to 0.017 in.)
. . . . . . . . . . .
1.5 mm (0.06 in.)
SeCQnd ring
. . . . . . . . . . . . . . . . . . .
0.20 to 0.40 mm (0.008 to 0.016 in.)
. . . . . . . . . . .
1.5 mm (0.06 in.)
Oil ring
. . . . . . . . . . . . . . . . . . . . . .
0.25 to 0.45 mm (0.009 to 0.017 in.)
. . . . . . . . . . .
1.5 mm (0.06 in.)
. . . . . . .
Piston O.D.
. . . . . . . . . . . . . . . . . . . . .
83.902 to 83.932 mm (3.303 to 3.304 in.)
83.800 mm (3.299 in.)
. . . . . . . . . . . . . . . . . . . . . . . . .
Piston Pin O.D.
25.991 to 26.000 mm (1.023 to 1.024 in.) 25.900 mm (1.019 in.)
. . . . . . . . . . . . . . . . . . . .
Pinon Pin Bushing I.D.
26.025 to 26.038 mm (1.024 to 1.025 in.) 26.100 mm (1.027 in.)
Pin-to-Bushing
Oil Clearance
. . . . . . . . . . . . . . . . . .
0.025 to 0.047 mm (0.0009 to 0.001 in.)
. . . . . . . .
0.15 mm (0.006 in.)
Connecting Rod Bearing
I.D.
. . . . . . . . . . .
47.000 to 4 7 M 2 mm (1.850 to 1 .852 in.)
. . . . . . .
47.100 mm (1.854 in.)
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Connecting Rod Journal
O.D.
. . . . . . . . . . . . . . . . . . . . . . .
46.950 to 46.964 mm (1.848 to 1.849 in.)
. . . . . . .
46.920 mm 11.847 in.)
Bearing-toJoumal
Clearance
. . . . . . . . . . . . . . . . . . . .
0.036 to 0.092 mm (0.0014 to 0.0036 in.)
. . . . . . .
0.15 mm (0.006 in.)
Cylinder Liner Height Above
Block
. . . . . . . . . . . . . . . . . . . . . . .
0.005 to 0.075 mm (0.0002 to 0.003 in.)
. . . . . . .
Cylinder Liner I.D.
. . . . . . . . . . . . . . . .
84.008 to 84.035mm (3.307 to 3 3 8 i n . )
84.180 mm (3.314 in.)
Cylinder Liner-tof'iston
Clearance
. . . . . . .
0.068 to 0.133 mm (0.002 to 0.005 in.)
. . . . . . . . .
TORQUES
Connecting Rod Caps
. . . . . . . . . . . . . .
44 to 49 Nm (4.5 to 5.0 kgm) (33 to 36 ft-lbs)
Cylinder Block Mounting Flange-
. . . . . . .
to-Cylinder Block Cap Screws 39 to 49 Nm (4.0 to 5.0 kgm) (29 to 36 ft-lb~)
0.280 mm (0.01 1
in.)
SME2760171aO4 YM276 and 2 7 6 D
K;nomoto, Printed in Jamn