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Service Manual Mitsubishi SQ-Series diesel engines
Version 08/2004
FLYWHEEL
ENGLISH
ENGINE MAIN PARTS
2. Replacing ring gear
(Removal)
1) Heat the ring gear evenly with an acetylene
torch.
2) Tap the ring gear all the way around with a bar
and a hammer to remove it from the flywheel.
(Installation)
Heat a replacement ring gear up to 150°C [302°F]
with a piston heater and install it to the flywheel
with the unchamfered side of the gear teeth fore-
most.
8.3 Reassembly
1. Installing oil seal
Apply a small amount of grease to new oil seal and
drive the oil seal to flywheel housing by using
installer.
Be sure oil seal faces to the correct direction.
2. Installing flywheel housing
1) Apply THREEBOND 1104 on the mounting
surfaces of both crankcase and flywheel
housing.
2) Install the gasket and flywheel housing on the
crankcase by aligning the holes on the
flywheel with the dowel pins on the crankcase.
3) Tighten the flywheel mounting bolts to the
specified torque.
Figure 53 Removing ring gear
Figure 54 Installing oil seal
Flywheel housing
Flywheel side
2 to 3 mm
[0.08 to
0.12 in.]
NOTE
Replace, if oil seal sleave running surface of
crankshaft is badly worn.
Figure 55 Installing flywheel housing
Gasket
Flywheel
housing
Tightening torque
60 ± 6 N·m
(6.1 ± 0.6 kgf·m)
[44 ± 4 lbf·ft]
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