Mitsubishi Galant 9G. Manual — part 598
CRANKSHAFT AND CYLINDER BLOCK
TSB Revision
ENGINE OVERHAUL <2.4L ENGINE>
11B-64
>>D<< BEARING CAP/BEARING CAP BOLT
INSTALLATION
1. Install the bearing caps so that the arrow points to the timing
belt side.
2. Before installing the bearing cap bolts, check that the shank
length of each bolt meets the limit. If it exceeds the limit,
replace the bolt.
Limit: 71.1 mm (2.79 inches)
3. Apply engine oil to the threaded portion and bearing surface
of the bolt.
4. Tighten the bolts to the specified torque in the tightening
sequence shown.
Tightening torque: 25
± 2N⋅m (18 ± 1 ft-lb)
5. Make a paint mark on the head of each bolt.
CAUTION
• If the bolt is overtightened, loosen the bolt completely
and then retighten it by repeating the tightening proce-
dure from step 4.
• If the bolt is turned less than 90 degrees, proper fasten-
ing performance may not be achieved. Be sure to turn
the bolt exactly 90 degrees.
6. Make a paint mark on the bearing cap 90 degrees from the
paint mark made on the bolt, in the direction of tightening the
bolt.
7. Turn each bolt 90 degrees in the tightening sequence
specified in step 4, and make sure that the paint marks on
the bolt and cap are aligned.
8. Make sure that the crankshaft turns smoothly and the end
play is correct. If the end play exceeds the limit, replace the
number 3 crankshaft bearings.
Standard value: 0.05
− 0.25 mm (0.002 − 0.009 inch)
Limit: 0.40 mm (0.015 inch)
.
AK301471AC
SHANK LENGTH
AK300199
1
5
9
10
6
2
AC
8
4
3
7
ARROW
AK300200
PAINT MARK
AC
PAINT MARK
90˚
AK300201
CRANKSHAFT AND CYLINDER BLOCK
TSB Revision
ENGINE OVERHAUL <2.4L ENGINE>
11B-65
>>E<< OIL SEAL INSTALLATION
Using special tools MD998776 and MB990938, press-fit the oil
seal in the case.
.
>>F<< SEALANT APPLICATION TO OIL SEAL
CASE
1. Apply sealant MITSUBISHI Genuine Part number
MD970389 or equivalent to the gasket surface of oil seal
case.
NOTE: Be sure to install the case quickly while the sealant is
wet (within 15 minutes).
2. Apply engine oil to the oil seal lip, and then install the oil seal
case onto the cylinder block.
NOTE: After installation, keep the sealed area away from
the oil for approximately one hour.
INSPECTION
M1113008800429
.
CRANKSHAFT JOURNAL OIL CLEARANCE
<PLASTIC GAUGING MATERIAL METHOD>
1. Remove oil from the crankshaft journal and crankshaft
bearing.
2. Install the crankshaft.
3. Cut the plastic gauging material to the same length as the
width of bearing and place it on journal in parallel with its
axis.
4. Install the crankshaft bearing cap carefully and tighten the
bolts to the specified torque.
5. Carefully remove the crankshaft bearing cap.
AK300202
MB990938
MD998776
AC
AK300576AB
AK300203
PLASTIC GAUGING MATERIAL
AC
CRANKSHAFT AND CYLINDER BLOCK
TSB Revision
ENGINE OVERHAUL <2.4L ENGINE>
11B-66
6. Measure the width of the plastic gauging material at its
widest part by using a scale printed on the plastic gauging
material package.
Standard value: 0.02
− 0.04 mm (0.0008 − 0.0015 inch)
Limit: 0.1 mm (0.003 inch)
.
CYLINDER BLOCK
1. Visually check for scratches, rust, and corrosion.
Use also a flaw detecting agent for the check. If defects are
evident, correct or replace.
2. Using a straightedge and feeler gauge, check the block top
surface for warpage. Make sure that the surface is free from
gasket chips and other foreign matter.
Standard value: 0.05 mm (0.0020 inch)
Limit: 0.1 mm (0.003 inch)
3. If the distortion is excessive, correct within the allowable
limit or replace.
Grinding limit: 0.2 mm (0.007 inch)
*Includes/combined with cylinder head grinding
Cylinder block height (when new):
290 mm (11.4 inches)
4. Check cylinder walls for scratches and seizure. If defects
are evident, replace or bore to oversize and replace pistons
and piston rings.
5. Using a cylinder gauge, measure the cylinder bore and
cylindrically. If worn badly, correct the cylinder to an oversize
and replace the piston and piston rings. Measure at the
points shown in the illustration.
Standard value:
Cylinder inner diameter 87.0 mm (3.43 inches)
Cylindrically 0.01 mm (0.0003 inch) or less
.
AK300204
PLASTIC GAUGING MATERIAL
AC
AK300205
A
B
C
D
E
F
G
AK300206
12mm
(0.47 in)
AC
A
B
CENTER
BOTTOM
CRANKSHAFT AND CYLINDER BLOCK
TSB Revision
ENGINE OVERHAUL <2.4L ENGINE>
11B-67
BORING CYLINDER
1. Oversize pistons to be used should be determined on the
basis of the largest bore cylinder.
Piston size identification
NOTE: Size mark is stamped on the piston top.
2. Measure the outside diameter (OD) of the piston to be used.
Measure it in thrust direction as shown.
3. Based on the measured piston OD, calculate the boring
finish dimension.
Boring finish dimension = Piston OD +
(clearance between piston OD and cylinder)
−
0.02 mm (0.0008 inch) (honing margin)
CAUTION
To prevent distortion that may result from temperature rise
during honing, bore cylinders, working from number 2 to
number 4 to number 1 to number 3.
4. Bore all cylinders to the calculated boring finish dimension.
5. Hone to the final finish dimension (piston OD + clearance
between piston OD and cylinder).
6. Check the clearance between the piston and cylinder.
Clearance between piston and cylinder:
0.02
− 0.04 mm (0.0008 − 0.0015 inch)
NOTE: When boring cylinders, finish all of four cylinders to
the same oversize. Do not bore only one cylinder to an over-
size.
SIZE
IDENTIFICATION MARK
0.50 mm (0.020 in)
oversize diameter
50
AK300577AC
THRUST
DIRECTION
PISTON OUTSIDE
DIAMETER
AC
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