Yanmar 4LHA-HTP User Manual

Chapter 2 Basic Engine
7. Crankshaft and Main Bearing
14LHA Serie.
7-2 Main bearing
(1) Inspecting the main bearing
Check for flaking, seizure or burning of the contact
surface and replace if necessary.
(2) Measuring the inner diameter of metal
Tighten the cap to the specified torque and measure
the inner diameter of the metal.
N(kgf)-m
Bearing cap bolt tightening torque
186-206
(19-21)
NOTE: When assembling the bearing cap, keep the follow-
ing in mind.
1) The lower metal (cap side) has no oil groove:
2) The upper metal (cylinder block side) has an oil
groove.
3) Check the cylinder block alignment No.
4) The "FW" on the cap lies on the flywheel side.
Main bearing metal (basic)
Thrust metal (gear side)
Thrust metal (Flywheel side)
Main bearing cap (basic)
Main bearing bolt
/Main bearing metal (intermediate)
«2?
I , Main bearing cap (intermediate)
2-31

Yanmar 4LHA-HTP Specifications

General

Brand	Yanmar
Model	4LHA-HTP
Category	Engine
Language	English