4G9 ENGINE
A
4ME0272
Flywheel Distance moved
Dowel pin
4ME0273
Runout
Dowel pin
Flywheel
Caution
To prevent distortion that may resul rise during honing, bore cylinders, 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.
(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 |
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Judgment | Reusable | Not reusable |
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(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
4ME0274
E Mitsubishi Motors CorporationMar.2001 | Revised |