Mitsubishi 6M60-TL, Руководство по обслуживанию

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Installation: 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.
Available main bearing undersizes: 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: Thrust plate
• Install trust plates on both sides of the main bearing cap and the
rear end of the crankcase, ensuring that the oil grooves face out-
side.
: Locating pin
NOTE
• If oversized thrust plates are to be used, those with a
mark must be the same in size. Oversized thrust plates are
available in the following sizes: 2.6 mm, 2.75 mm and 2.9
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 the main bearing cap bolts, check the
number of punch marks on the head of each bolt. (A bolt
with two or less marks is reusable.)
• The number of punch marks corresponds with the number
of times the main cap bolt has been tightened using the
torque-turn tightening method. Any bolt that has three
marks (i.e. that has been used three times) must be re-
placed.
• Starting at the front of the engine, fit the main bearing caps in
the order of the embossed numbers facing the illustrated direc-
tion.