Yanmar 3JH4E Service Manual page 227

(4) Checking the side gap of a crankshaft
After assembling the crankshaft, tighten the
main bearing cap to the specified toque, and
move the crankshaft to one side, placing a dial
gauge on one end of the shaft to measure
thrust clearance.
Replace the thrust bearing if it is worn beyond
the limit.
Crankshaft side gap
Other measurement method can also be
effective. Insert the thickness gauge directly
into the clearance between the thrust metal
and crankshaft thrust face.
mm
Standard Limit
0.14-0.22 0.30
207
5. Inspection and servicing of basic engine parts
Standard
width
Thrust face
010391-00X
Cylinder block
Crankshaft
Thrust metal
Bearing cap
Thickness gauge
010642-00E