Yanmar 2TNV70 - Tappet; Cylinder Block Specifications; Cylinder Block

ENGINE
6-12
TNV IDI Service Manual
Cylinder Block Specifications
Connecting Rod Big End
Connecting Rod Distortion
Tappet
CYLINDER BLOCK SPECIFICATIONS
Cylinder Block
Inspection Item Standard Limit
Reference
Page
Side Clearance
0.0079 - 0.0157 in.
(0.20 - 0.40 mm)
-
See
Inspection of
Connecting
Rod on
page 6-47
Bearing Inside Diameter and Oil Clearance See Crankshaft on page 6-7
Model Inspection Item Standard Limit
Reference
Page
All Models
Twist and Bend per
3.937 in.(100 mm)
Less than
0.001 in.
(0.03 mm)
0.003 in.
(0.08 mm)
See
Inspection of
Connecting
Rod on
page 6-47
Inspection Item Standard Limit
Reference
Page
Tappet Bore (Block) Inside Diameter
0.8268 - 0.8276 in.
(21.000 - 21.021 mm)
0.8284 in.
(21.041 mm)
See
Inspection of
Tappets on
page 6-48
Tappet Stem Outside Diameter
0.8239 - 0.8252 in.
(20.927 - 20.960 mm)
0.8231 in.
(20.907 mm)
Oil Clearance
0.0016 - 0.0037 in.
(0.040 - 0.094 mm)
0.0053 in.
(0.134 mm)
Inspection Item Model Standard Limit
Reference
Page
Cylinder Inside Diameter
2TNV70
3TNV70
2.7563 - 2.7567 in.
(70.010 - 70.020 mm)
2.7638 in.
(70.200 mm)
See
Inspection of
Cylinder
Block on
page 6-45
3TNV76
2.9925 - 2.9929 in.
(76.010 - 76.020 mm)
3.0000 in.
(76.200 mm)
Cylinder Bore
Roundness
0.0004 in. (0.01 mm)
or less
0.0012 in.
(0.03 mm)
Taper
TNV_IDI_ServiceManual_A4.book 12 ページ ２０１２年２月２４日 金曜日 午前１０時２４分