Yanmar 3JH3E - 1-5 Cylinder bore measuremant

Chapter 2 Basic Engine
_1._C_y_J_in_d_e_r_B_lo_c_k _________________________ 3,4111s(B)(C)E
1-5 Cylinder bore measurement
Measure the bore diameter with a cylinder gauge at the
positions shown in the figure.
Replace the cylrnder bore when the measured value
exceeds the wear limit. Measurement must be done at
least at
3 positions as shown in the figure, namely, top,
middle and bottom positions ln both directions along the
crankshaft rotation and crankshaft center lines.
Printed in Japan
HINSHI-118009
Cylinder gauge
2-3
Top position
Middle position
Bottom position
0
N
mm
Direction of
crankshaft
center line
Direction
of
crankshaft
rotation
Standard
Wear limit
Cylinder bore dia. j 84.00~16 84.03
rf,84.20
Cylinder roundness
0~0.01
0.03
mm