Yanmar 3TNV Series Service Manual page 108

[Disassemble]
Remove the bearing caps, cap side bearings, and
thrust metals. Place each thrust metal with
identification of the position and direction.
The position number of reassembling is punched
on a metal cap (except for both ends) and a
cylinder block.
[Reassemble]
Carefully install each thrust metal so that the
grooved one is positioned away from the cap.
Do not confuse the upper and lower main bearing
metals. The upper main bearing metal (block
side) has an oil hole, and the lower one does not.
The "arrow" marks on the cap shall face the
flywheel. Tighten main bearing cap bolts.
Main bearing cap bolt tightening torque
(apply lube oil)
Model
3TNV82A 76.4 80.4 (7.8 8.2)
TNV84 88 93.2 98.1(9.5 10.5)
4TNV94L 98 108.1 117.9 (11.0 12.0)
4TNV106(T) 186.2 205.8 (19.0 21.0)
Point5: Crankshaft
[Disassemble]
Remove the crankshaft. Remove each main
bearing metal upper (block side) and pair it with
the metal cap side lower metal.
Carefully prevent damage to the bearing or finger
injury when removing the crankshaft because it is
heavy.
4. Disassembly, Inspection and Reassembly of Engines
Nm(kgf･m)
Standard
93