Mitsubishi Fuso CANTER FE85DE6SLGP, Руководство по ремонту

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11-86
Installation: Lower crankcase
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.
• Clean all sealant application surfaces.
• Apply evenly thick beads of sealant to the upper crankcase with-
out any breaks as shown in the illustration.
• Install the lower crankcase within three minutes of applying the
sealant, being careful not to dislodge the sealant.
• Apply engine oil to the main cap bolt threads and seating surfac-
es of the bolt heads, then tighten them to a torque of 49 N·m {5.0
kgf·m} in the order indicated in the illustration (1 to 10).
• Tighten each main cap bolt further by 90
°
in the same order.
• Finally, tighten each bolt to the specified torque in the order indi-
cated in the illustration (11 to 26).
CAUTION
• After installing the bolts, wait at least an hour before start-
ing the engine.
• Apply new beads of sealant whenever the main cap bolts
have been loosened or removed.
• After tightening the bolts using the above torque-turn tightening
method, make a punch mark on the head of each bolt to indicate
the number of times that it has been used.
CAUTION
• The bolts that have been tightened using the torque-turn
method must never be additionally tightened after the final
angular tightening.
• After installing the main bearing caps, rotate the crankshaft by
hand. If it cannot be rotated smoothly, inspect the main bearing
caps for correct installation.
CRANKSHAFT AND CRANKCASE