Mitsubishi Eclipse. Manual — part 884
PISTON AND CONNECTING ROD
TSB Revision
ENGINE OVERHAUL <3.0L>
11D-45
REMOVAL SERVICE POINTS
.
<<A>> CONNECTING ROD CAP REMOVAL
1. Mark the cylinder number on the side of the connecting rod
big end for correct reassembly.
2. Keep the removed connecting rods, caps, and bearings in
order according to the cylinder number.
.
<<B>> PISTON PIN REMOVAL
AKX00734
CYLINDER
NUMBER
AB
ITEM
NO.
PART NO.
DESCRIPTION
1
MIT310134
Base
2
MIT310136
Piston support
3
MIT310137
Connecting rod guide pin
4
MIT310138
Connecting rod guide pin
5
MIT310139
Connecting rod guide pin
6
MIT310140
Piston support
7
MIT310141
Connecting rod guide pin
8
MIT310142
Piston support
9
MIT48143
Press pin
10
216943
Stop screw
11
10396
Nut
AKX00730
PISTON PIN SETTING TOOL MIT216941
1
2
3
6
9
10
11
7
8
4
5
AB
PISTON AND CONNECTING ROD
TSB Revision
ENGINE OVERHAUL <3.0L>
11D-46
1. Remove the stop screw from the base.
2. Select the correct piston support for your application. (See
above) Fit the piston support onto the base. Place the base
on the press support blocks.
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 piston pin.
INSTALLATION SERVICE POINTS
.
>>A<< PISTON PIN INSTALLATION
1. Thread the stop screw and jam 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 graduations on the press pin, adjust the stop
screw to the depth.
Depth: 60 mm (2.36 inches)
AKX00645
BASE
PRESS
PIN
PISTON
PIN
FRONT
MARK
FRONT MARK
CONNECTING
ROD
GUIDE PIN
AB
AKX00732
PRESS
PIN
PISTON
SUPPORT
STOP
SCREW
PIN DEPTH SET
LOCATION
FLAT PISTON
SUPPORT
JAM
NUT
BASE
AB
PISTON AND CONNECTING ROD
TSB Revision
ENGINE OVERHAUL <3.0L>
11D-47
3. Place the base on the 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, and 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.
AKX00646
JAM NUT
PRESS
PIN
PISTON PIN
FRONT
MARK
FRONT
MARK
CONNECTING
ROD GUIDE
PIN
BASE
STOP
SCREW
AB
AKX00716
SIZE
IDENTIFICATION COLOR
Standard
None
0.50 mm (0.020 in) oversize
diameter
Blue
1.00 mm (0.040 in) oversize
diameter
Yellow
AK000196AB
SIDE RAIL
SIDE RAIL
SPACER
PISTON AND CONNECTING ROD
TSB Revision
ENGINE OVERHAUL <3.0L>
11D-48
CAUTION
Do not use any piston ring expander when installing the
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 the
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 either
direction.
.
>>C<< PISTON RING NO.2/PISTON RING NO.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: T
Number 2 ring: 2T
NOTE: Size marks on piston rings are as follows.
2. Using a piston ring expander, fit the number 2 piston ring
into the number 2 groove of piston.
NOTE: Install the piston rings with their identification mark
facing up, to the piston crown side.
3. Install the number 1 piston ring in the same manner as step
2.
.
>>D<< 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 the crank pin is on the center
of the cylinder bore.
AKX00608
SIDE RAIL END
AB
SIZE
IDENTIFICATION MARK
Standard
None
0.50 mm (0.020 in) oversize
diameter
50
1.00 mm (0.040 in) oversize
diameter
100
AKX00689
NO.1
NO.2
IDENTIFICATION
MARK
SIZE MARK
IDENTIFICATION MARK
AB
AKX00633
AKX00620
UPPER
SIDE RAIL
NO.1
PISTON PIN
TIMING
BELT SIDE
LOWER
SIDE RAIL
NO.2 RING GAP
AND SPACER GAP
AB
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