Mitsubishi Motors 4G9 - Manual (Page 165)

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4G9 ENGINE (E–W) –
Crankshaft, Cylinder Block, Flywheel and Drive Plate
11A-12-7
PWEE9502-A
E
Nov. 1995 Mitsubishi Motors Corporation Revised
Caution
To prevent distortion that may result from temperature
rise during honing, bore cylinders, in the order of
No. 2, No. 4, No.1 and No. 3.
(5) Hone to the final finish dimension (Piston O.D. + clearance
between piston O.D. and cylinder.)
(6) Check the clearance between piston and cylinder.
Clearance between piston and cylinder:
0.02 – 0.04 mm
NOTE
When boring cylinders, finish all of four cylinders to the
same oversize. Do not bore only one cylinder to an
oversize.
HYDRO-FLYWHEEL <DOHC–GDI for PAJERO io>
(1) Check the rear side of the flywheel for color of the hatched
area A in the illustration, and determine whether it is
serviceable or not in accordance with the criteria given
in the following table.
If judged unendurable for reuse, replace the flywheel
assembly.
Color Purple Dark blue Light blue Gray
Judgment Reusable Not reusable
(2) Measure the play in the circumferential direction using
the following procedure.
(3) Turn the flywheel clockwise and anticlockwise to measure
the distance over which the dowel pin moves freely.
Limit: 9 mm
(4) Check the friction surface for runout in the following
manner.
(5) Apply a thrust force of approx. 98 N by hand on the
flywheel to move it in the axial direction, and measure
the runout at the dowel pin position. If the limit is exceeded,
replace the flywheel assembly.
Limit: 0.75 mm
PWEE9502-I
E
Mar. 2001 Mitsubishi Motors Corporation Revised
A
4ME0272
Flywheel
Dowel pin
Distance moved
4ME0273
Runout
Dowel pin
4ME0274
Flywheel