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Installation: Front oil seal slinger
• Install the front oil seal slinger onto the crankshaft until the end
of face of securely contacts the guide.
Installation: Mitsubishi 6M70 Main bearing
• Install the main bearings with their lugs aligned as shown in the
illustration. When the crankshaft journals have been ground to
an undersize, use undersized main bearings.
Undersizes available: 0.25 mm, 0.50 mm, 0.75 mm, 1.00 mm
CAUTION
• The upper main bearing has an oil hole. The lower main
bearing has no oil hole. Do not confuse the upper and lower
bearings, as this can cause seizure in the engine.
Installation: Mitsubishi 6M70 Thrust plate
• Install thrust plates on both sides of the main bearing cap and
the rear end of the crankcase, ensuring that the oil grooves face
outside.
• If oversized thrust plates are to be used, those with an
d
marks must be the same in size. Oversizes available: 0.15 mm,
0.30 mm and 0.45 mm.
CAUTION
• If thrust plates are installed with the oil grooves facing in-
side, the engine may seize.
Installation: Main bearing cap
CAUTION
• Before installing bolts, check the number of punch marks
on the bolt head. (Bolt with up to two punch marks can be
reused.)
• The number of punch marks indicates the number of times
the bolt has been tightened in the past within the plastic re-
gion. If there are three punch marks (tightened three times
in the past), replace the bolt.
• Install locating pins in the illustrated direction for the main bear-
ing cap on the rearmost part.
Mitsubishi 6M70 Engine Parts contact:
email: EngineParts@HeavyEquipmentRestorationParts.com
Phone: 269 673 1638
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