Cylinder Liner - Install; Cylinder Liner Flange Protrusion - Measure (When Cylinder Liner Installed) - Mitsubishi S12A2 Service Manual

Chapter 7 ASSEMBLY OF BASIC ENGINE

2.3 Cylinder Liner - Install

Apply engine oil to the O-ring sliding surfaces to prevent O-rings from twisting.
Do not apply engine oil to the O-ring grooves on cylinder liner.
(1) Install the O-rings to the cylinder liner.
(2) Insert the shim to the cylinder which needs the adjust-
ment of cylinder liner flange protrusion.
(3) Apply engine oil to the O-ring fitting bore in Crankcase
and cylinder liner O-ring sliding surfaces.
(4) Slowly insert the cylinder liner into the bore in the
crankcase.With a correct cylinder liner installer, lightly
tap the cylinder liner until its flange contacts snugly on
the seating surface of the crankcase.Then, lightly tap
the liner several times to verify the stable seating.
Note: To verify the correct O-rings installation, measure the
roundness of inside diameter of the cylinder liner (es-
pecially O-ring installing position.)

2.4 Cylinder Liner Flange Protrusion - Measure (When Cylinder Liner Installed)

(1) Remove dust and dirt from the crankcase top face and
the cylinder liner top end face to measure.
(2) Place the liner pusher on equally spaced 4 positions of
the cylinder liner upper rim and tighten the pusher bolts
evenly to make a close contact of the cylinder liner and
the crankcase.
(3) Apply a dial gauge probe to the top face of the crank-
case, and the dial gauge to zero.
(4) Slide the probe to measure the flange protrusion at four
places on the top of the cylinder liner, and calculate the
mean value.
(5) If the mean value of the protrusion is smaller than the
standard, insert a shim under the cylinder liner flange.
For shim and standard value, refer to "Cylinder Liner
Flange Protrusion - Calculate (When Cylinder Liner
Not Installed)" of "ASSEMBLY OF BASIC ENGINE."
7-10
Application of
engine oil
Cylinder Liner O-Rings - Install
Installer
P/N:32591-01800
Cylinder Liner - Install
Bolt
Liner pusher Liner pusher Liner pusher
Cylinder Liner Flange Protrusion - Measure
Cylinder liner
Cylinder liner flange
Cylinder liner flange Cylinder liner flange
protrusion protrusion protrusion