Mitsubishi Eclipse. Manual — part 868
PISTON AND CONNECTING ROD
TSB Revision
ENGINE OVERHAUL <2.4L>
11B-49
3. Insert the press pin through the piston pin hole. Select the
correct connecting rod guide pin (See above). Thread the
guide pin onto the threaded portion of the press pin.
4. Position the piston assembly on the piston support in the
press. With the press pin up as shown, insert the guide pin
through the hole in the piston and through the hole in the
piston support.
CAUTION
To avoid piston damage, the piston support must seat
squarely against the piston. Verify that the piston pin will
slide through the hole in the piston support.
5. Press the piston pin out of the assembly.
6. Remove the piston pin from the press pin.
INSTALLATION SERVICE POINTS
.
>>A<< PISTON PIN INSTALLATION
1. Thread the stop screw and lock nut assembly into the base.
Fit the correct piston support on top of the base. Insert the
press pin, threaded end up, into the hole in the piston
support until the press pin touches the stop screw.
2. Using the markings on the press pin, adjust the stop screw
to the depth shown on the instruction for special tool
MIT216941.
AKX00516
PRESS
PIN
PISTON PIN
FRONT MARK
FRONT
MARK
CONNECTING
ROD GUIDE PIN
BASE
AB
AKX00599
PRESS
PIN
BASE
PISTON
SUPPORT
LOCKNUT
STOP SCREW
FLAT PISTON
SUPPORT
PIN DEPTH SET
LOCATION
AB
PISTON AND CONNECTING ROD
TSB Revision
ENGINE OVERHAUL <2.4L>
11B-50
3. Place the base on press support blocks.
4. Slide the piston pin over the threaded end of the press pin,
and thread the correct guide pin up against it.
5. Coat the piston pin with engine oil. With the connecting rod
held in position, slide the guide pin through the piston and
connecting rod.
6. Press the piston pin through the connecting rod until the
guide pin contacts the stop screw.
CAUTION
Due to production tolerance variations, it is necessary to
visually inspect the piston pin depth after installation to
verify that the piston pin is centered. Adjust if necessary.
7. Remove the piston assembly from the base. Remove the
guide pin and press pin from the assembly.
8. Check that the piston moves smoothly.
.
>>B<< OIL RING INSTALLATION
1. Fit the oil ring spacer into the piston ring groove.
NOTE: The side rails and spacer may be installed in either
direction.
NOTE: New spacers and side rails are colored for identifica-
tion of their sizes.
AKX00517
JAM NUT
PRESS PIN
PISTON PIN
FRONT
MARK
CONNECTING
ROD GUIDE PIN
BASE
STOP
SCREW
AB
FRONT
MARK
AKX00568
SIZE
IDENTIFICATION COLOR
Standard
None
0.50 mm (0.020 in) oversize
diameter
Red
1.00 mm (0.040 in) oversize
diameter
Yellow
AKX00473
UPPER SIDE RAIL
LOWER SIDE RAIL
SPACER
AB
PISTON AND CONNECTING ROD
TSB Revision
ENGINE OVERHAUL <2.4L>
11B-51
CAUTION
Do not use a piston ring expander when installing side rail.
2. Install the upper side rail.
To install the side rail, first fit one end of the rail into the
piston groove, then press the remaining portion into position
by finger. See illustration.
3. Install the lower side rail in the same procedure as described
in step 2.
4. Make sure that the side rails move smoothly in both
directions.
.
>>C<< PISTON RING NUMBER 2/PISTON RING NUMBER 1
INSTALLATION
1. To prevent wrong installation, check the identification mark
of each piston ring. The identification mark is stamped near
the ring gap:
Identification mark:
Number 1 ring: 1R
Number 2 ring: 2R
NOTE: Size marks on piston rings are as follows.
2. Using the piston ring expander, fit number 2 into the number
2 groove of piston.
NOTE: Install piston rings with identification mark facing up,
to the piston crown side.
3. Install the number 1 piston ring in the same manner as step
2.
.
AKX00442
SIDE RAIL END
AB
SIZE
SIZE MARK
Standard No.1 ring (None) Yellow paint to the ring periphery
No.2 ring (None) Red paint to the ring periphery
0.50 mm (0.020 in)
oversize diameter
50
1.00 mm (0.040 in)
oversize diameter
100
AKX00527
NO.2
IDENTIFICATION MARK "1R"
IDENTIFICATION
MARK "2R"
SIZE MARK
NO.1
AB
AKX00515
PISTON AND CONNECTING ROD
TSB Revision
ENGINE OVERHAUL <2.4L>
11B-52
>>D<< CONNECTING ROD BEARING INSTALLATION
1. Measure the crankshaft pin diameter and confirm its
classification from the following table. In the case of a
crankshaft supplied as a service part, identification
colors/marks of its pins are painted /stamped at the positions
shown in the illustration.
2. If the crankshaft pin outside diameter identification mark is
"I" or identification color is "Yellow", for example, select a
bearing whose identification mark is "1" or identification
color is "Yellow".
If there is no identification mark or no identification color
paint on the crankshaft, measure the pin outside diameter
and select a bearing appropriate for the measured value.
3. Install the selected bearing in the big end and in the cap of
the connecting rod.
.
>>E<< PISTON AND CONNECTING ROD INSTALLATION
1. Apply engine oil on the circumference of the piston, piston
rings, and oil ring.
2. Arrange the piston ring and oil ring gaps (side rail and
spacer) as shown in the illustration.
3. Rotate the crankshaft so that crank pin is on the center of
the cylinder bore.
CRANKSHAFT PIN OUTSIDE
DIAMETER
CONNECTING
ROD BEARING
IDENTIFICATION
MARK OR COLOR
SIZE mm (in)
IDENTIFICATION
MARK OR COLOR
I or Yellow
44.995
− 45.000
(1.7715
− 1.7717)
1 or Yellow
II or None
44.985
− 44.995
(1.7711
− 1.7715)
2 or None
III or White
44.980
− 44.985
(1.7709
− 1.7711)
3 or Blue
AKX00585
NO. 1
IDENTIFICATION COLOR OF CRANKSHAFT
PIN DIAMETER
NO. 4
NO. 2
NO. 3
AB
AK102988
IDENTIFICATION MARK OF CRANKSHAFT
PIN DIAMETER
NO.1
NO.4
NO.2
NO.3
AB
AKX00500
IDENTIFICATION MARK AND COLOR OF
CONNECTING ROD BEARING SIZE
IDENTIFICATION
MARK OR COLOR
AB
AKX00456
UPPER SIDE
RAIL
NO.1
TIMING BELT
SIDE
PISTON PIN
LOWER
SIDE RAIL
NO.2 RING GAP
AND SPACER GAP
AB
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