Mitsubishi Galant (2004+). Manual — part 608
PISTON AND CONNECTING ROD
TSB Revision
ENGINE OVERHAUL <3.8L ENGINE>
11D-49
>>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: 1T
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<< 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.
SIZE
SIZE MARK
Standard
None
0.25 mm (0.010 in) oversize
diameter
25
0.50 mm (0.020 in) oversize
diameter
50
AKX00689
NO.1
NO.2
IDENTIFICATION
MARK
SIZE MARK
IDENTIFICATION MARK
AB
AKX00633
AKX00634
NO.5
LOCATION OF IDENTIFICATION COLOR
NO.2
NO.4
NO.1
NO.3
NO.6
AB
CRANKSHAFT PIN OUTSIDE DIAMETER
CONNECTING ROD
BEARING
IDENTIFICATION COLOR SIZE mm (in)
IDENTIFICATION MARK IDENTIFICATION
COLOR
Yellow
54.994
− 55.000
(2.1651
− 2.1654)
0
Pink
1
Red
2
Green
None
54.988
− 54.994
(2.1649
− 2.1651)
0
Red
1
Green
2
Black
White
54.982
− 54.988
(2.1646
− 2.1649)
0
Green
1
Black
2
Brown
PISTON AND CONNECTING ROD
TSB Revision
ENGINE OVERHAUL <3.8L ENGINE>
11D-50
2. From the above table, select a bearing whose size is
appropriate for the crankshaft pin outside the diameter.
For example, if the crankshaft pin outside diameter
Identification color is "yellow" and the connecting rod
Identification mark is "2," select a bearing whose
Identification color is "green."
If there is no identification color paint on the crankshaft,
measure the pin outside diameter and select 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. Liberally coat the circumference of the piston, piston ring,
and oil ring with engine oil.
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.
4. Insert the piston and connecting rod assembly into the
cylinder with the front mark on the piston crown pointing to
the timing belt side.
AK000449
IDENTIFICATION MARK
AB
AKX00635
IDENTIFICATION
COLOR
AB
AKX00620
UPPER
SIDE RAIL
NO.1
PISTON PIN
TIMING
BELT SIDE
LOWER
SIDE RAIL
NO.2 RING GAP
AND SPACER GAP
AB
AK201081AB
FRONT MARK
PISTON AND CONNECTING ROD
TSB Revision
ENGINE OVERHAUL <3.8L ENGINE>
11D-51
5. Using a suitable piston ring compressor tool, install the
piston and connecting rod assembly into the cylinder block.
.
>>F<< CONNECTING ROD CAP INSTALLATION
1. Verifying the mark made during disassembly, install the
bearing cap to the connecting rod. If the connecting rod is
new with no index mark, make sure that the bearing locking
notches are on the same side as shown.
2. Make sure that the connecting rod big end side clearance
meets the specification.
Standard value: 0.10
− 0.25 mm (0.004 − 0.009 inch)
Limit: 0.4 mm (0.02 inch)
.
>>G<< CONNECTING ROD CAP NUT INSTALLATION
1. The connecting rod bolts should be examined before reuse.
If the bolt threads are damaged, the bolt should be replaced.
Hand-thread the nut to the full length of the bolt threads. If
the nut does not run down smoothly, the bolt should be
replaced.
2. Before installation of each nut, apply engine oil to the
threaded portion and bearing surface of the nut.
3. Loosely tighten each nut to the bolt.
4. Then tighten the nuts alternately to a torque of 27
± 2 N⋅m
(20
± 1 ft-lb) to install the cap properly.
AKX00721
AKX00735
CYLINDER NO.
NOTCHES
AB
AK201530
PISTON AND CONNECTING ROD
TSB Revision
ENGINE OVERHAUL <3.8L ENGINE>
11D-52
5. Make a paint mark on the head of each nut.
CAUTION
• If the nut is turned less than 90 degrees, proper fasten-
ing performance may not be achieved. Be careful to
tighten the nut exactly 90 degrees .
• If the nut is overtightened (exceeding 94 degrees),
loosen the nut completely and then retighten it by
repeating the tightening procedure from step 3.
6. Make a paint mark on the bolt end at a position 90 to 94
degrees from the paint mark made on the nut in the direction
of tightening the nut.
7. Turn the nut another 90 to 94 degrees and make sure that
the paint marks on the nut and bolt are aligned.
INSPECTION
M1113008500440
.
PISTON
Replace the piston if scratches or seizure is evident on its sur-
faces (especially the thrust surface). Replace the piston if it is
cracked.
.
PISTON PIN
1. Insert the piston pin into the piston pin hole with a thumb.
You should feel a slight resistance. Replace the piston pin if
it can be easily inserted or there is excessive play.
2. The piston and piston pin must be replaced as an assembly.
.
PISTON RING
1. Check the piston ring for damage, excessive wear, and
breakage. Replace if defects are evident. If the piston has
been replaced with a new one, the piston rings must also be
replaced with new ones.
2. Check for clearance between the piston ring and ring
groove. If the limit is exceeded, replace the ring or piston, or
both.
Standard value:
Number 1: 0.03
− 0.07 mm (0.0012 − 0.0027 inch)
Number 2: 0.02
− 0.06 mm (0.0008 − 0.0023 inch)
Limit: 0.1 mm (0.003 inch)
AKX01401AB
90˚ to 94˚
PAINT
MARKS
NUT
BOLT
PAINT
MARKS
AKX00612
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст