Mitsubishi S4S Service Manual page 77

(2) Face runout and circular runout (radial
eccentricity) of flywheel
Set a dia! indicator at the friction (vertical) surface
and turn the flywheel one full revolution to check
the face runout. Set a dial indicator at the
horizontal surface of the pilot bearing bore and
turn the flywheel one full revolution to check the
circular runout. Excessive runout of the flywheel
in either position will probably be caused by dirt
in the mounting face or improper tightening of
the bolts. Unit: mm [in.]
Item
Assernbly
Repair
Standard Limit
Face and bore
0.15 [0.0059]
0.50
runouts of flywheel or less
[0.020]
(3) Ring gear replacement
Check the ring gear tee th and, if they are
defective, replace the gear as outlined below.
(Removal)
(a) Heat the ring gear evenly with an burner.
(b) Hit the ring gear all the way around with a
bar and a hammer to remove it.
(Installation)
Heat a replacement ring gear up to 100°C [212°F]
with a heater, and install the gear to the flywheel
placing the unchamfered side of the teeth to the
flywheel.
. - - - - - - - - - l (
Lh
CAUTION
) 1 - - - - - - - ,
Do not heat the ring gear excessively.
ENGINE MAIN PARTS
Measuring flywheel runouts
Removingring gear
7-15