12
12-9
8.3 Mitsubishi 6M70 Valve mechanism
• Engine oil in the main oil gallery is directed through the oil passages in the cylinder head, rocker case and cam-
shaft cap, and lubricates the No. 1 journal of the camshaft before being fed to the rocker shaft. The oil flowing
through the oil passages in the rocker shaft lubricates No. 2 to No. 7 journals of the camshaft and also lubricates
the rockers. The oil flowing to the adjusting screws on the rockers lubricates the valve bridges. After lubricating
the various parts, the oil returns to the oil pan.
8.4 Mitsubishi 6M70 Check valves and
oil jets
• An oil jet is fitted in the lower part of
the main oil gallery for each cylinder.
• Engine oil is sprayed out of the oil jet
into the piston to cool the piston.
• Each oil jet is fitted with a check valve
that opens and closes at predeter-
mined oil pressure levels. At low en-
gine speeds, the check valve closes to
maintain the required volume of oil in
the lubrication system and prevent re-
ductions in oil pressure.
Mits
ubishi 6M70 Engine Parts contact:
email: EngineParts@HeavyEquipmentRestorationParts.com
Phone: 269 673 1638
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