1990 MITSUBISHI SPYDER check oil

ENGINE OVERHAUL and
CrankshaftUpper side
side
ring gap and spacer gaprail
Timing belt side
Front mark
Identification mark
PISTON AND CONNECTING ROD
(1)Liberally coat engine oil on the of the piston,’
piston ring, and oil ring.
(2) Arrange the piston ring and. oil ring gaps
rail and
spacer) as shown in the ‘figure.
(3)Rotate crankshaft so that crank cylinder
bore.
Identification mark:
(4) Rotate crankshaft so that the is on the center
of the cylinder bore.
(5) Use suitable thread protectors on the connectin g
before inserting piston and rod assembly into
the cylinder block.
Care must be taken not to nick the crank
(6) Using a suitable piston tool, the:
piston and connecting rod into the ,
CONNECTING ROD BEARINGS INSTALLATION
When the bearing needs replacing, select and instal l a proper
bearing by the following procedure.
(1)Measure the crankshaft pin diameter and confirm its classi-
fication from the following table. In the case of a crankshaft
supplied as a service part, identification colors of its pins
are painted at the positions shown in the illustrat ion.
(2) The connecting rod bearing identification mark is stamped
at the position shown in the illustration.
Crankshaft pinConnecting rod
bearing
O.D. mm (in.)Thickness mm (in.)cationcationcationmarkmark
I
1None(1.7715-1.7717)
2None None21.491-1.495
(1.7711-1.7715)
3None White3
Connecting rod I.D.: mm in.)
Loosely tighten each nut to the bolt.
[Example]-
”(1) If the measured value of a crankshaft pin outer
diameter is between 44.995 and 45.000 mm (1.7715
and 1.7717 in.), the pin is classified as in the
table. In case the crankshaft is also replaced by
a spare part, check the identification colors of th e
pins painted on the new crankshaft. If the color is
yellow, for example, the pin is classified as “1”. I n
the above cases, select the connecting rod bearing having identification mark “1”.
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ENGINE OVERHAUL
11300850104
(1) Replace piston ii or seizure is evident
its surfaces (especially surface). Replace the
piston if it is cracked.
PISTON PIN
(1) the piston pin the pin hole a
You should feel a slight resistance. the
pin if it can be easily inserted or there ‘is .
(2) The piston and piston pin must be replaced
bly.
PISTON RING
(1) Check ‘the ring for
and replace if defects are evident: piston
has been replaced with a
one, the piston
also be replaced with new ones.
(2) Check for the clearance
the piston ring and
ring groove. If the limit is exceeded, replace the
or piston, or both.
Item
No. 1 ring
ring
Limit: 0.1 mm
in.)
-Standard value mm (in.)
(3) Install the piston ring into the cylinder bore. Force it
down with a piston, its crown being in contact with the
ring, to correctly position it at right angles to the cylinder
wall. Then, measure the end gap with a feeler gauge .
If the ring gap is excessive, replace the piston ri ng.
Standard value mm (in.)
No. 1 ring
ring
ring
Limit:No. 1, No. 2 ring 0.8 mm in.)
Oil ring 1.0 mm in.)
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E N G I N E O V E R H A U L
ed
(for No. tion mark
Upper and lower (for No.3)
Identification
mark
1
Shank length
[Example]
(1) If the measured value of a crankshaft
diameter is between 56.994 mm (2.2439
2.2441 in.), the journal is in the’
case the is also replaced by a
spare part, check the identification colors of the
journals painted on the
crankshaft. If the color’
is yellow, for example,.
journal is classified as
(2)
check the cylinder block bearing hole
mark stamped on the cylinder block.
If it is “O”, read the “Bearing identification column
to find the identification mark of the bearing to b e
used. In this case, it is “1”.
(4)
the bearings oil groove to the cylinder
block.
(5) Install the bearings having no oil to the bearing
caps.
CAP B E A R I N G C A P B O L T
INSTALLATION
(1) Install the bearing caps so that their arrows directed
to the timing belt side.
(2) Before installing the bearing cap bolts, check that the
shank length of each bolt meets the limit.
limit
is exceeded, replace the bolt.
(A): Max. 71.1 mm (2.79 in.)
(3) Apply engine oil to the threaded portion and be aring sur-
face of the bolt.
(4) Tighten the bolts to 25 Nm (16
in the specified
tightening sequence.
(5) Make a paint mark on the head of each bolt.
(6) Make a paint mark on the bearing cap at the pos ition
to from the paint mark made on the bolt in
the direction of tightening the bolt.
(7) According to the specified tightening sequence, give a
to turn to each bolt and make sure that the
paint mark on the bolt and that on the cap are in a lignment.
Caution
(1) If
thebolt is turned less than proper
performance may not be expected.
tightening the bolt, therefore, be careful to
a sufficient turn to it.
( 2 ) I f t h e b o l t i s
loosen the bolt completely and then retlghten
by repeating the tightening procedure from step
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ENGINE OVERHAUL and
A
INSPECTION
O I L C L E A R A N C E
(1) Remove oil from the crankshaft journal ‘and crankshaft
bearing.
(2) Install the crankshaft.
(3) Cut the Plastigage to the same length as the wi dth of
bearing and place it on journal in parallel with it s axis.
(4) Install the crankshaft bearing cap carefully an d tighten
the bolts to specified torque.
(5) Carefully remove the crankshaft bearing cap.
(6) Measure the width of the Plastigage at its wide st part
by using a scale printed on the Plastigage package.
Standard value:
mm in.)
Limit: 0.1 mm
in.)
CYLINDER BLOCK (1) Visually check for scratches, rust, and corrosi on.
Use also a flaw detecting agent for the check. If d efects
are evident, correct, or replace.
(2) Using a straightedge and feeler gauge, check th e block
top surface for
Make sure that the surface
is free from gasket chips and other foreign matter.
Standard value: 0.05 mm
in.)
Limit: 0.1 mm
in.)
(3) If the distortion is excessive, correct within the allowable
limit or replace.
Grinding limit: 0.2 mm
in.)
Includes/combined with cylinder headgrinding
Cylinder block height (when new): 283.9-284.1 mm (11.177-11.185 in.)
(4) Check cylinder walls for scratches and seizure. If defects
are evident, correct (bored to oversize) or replace.
(5) Using cylinder gauge, measure the cylinder bore and
cylindricity. If worn badly, correct cylinder to an oversize
and replace piston and piston rings. Measure at the
points shown in illustration.
Standard value:
Cylinder I.D.
mm in.)
Cylindricity 0.01 mm
in.)
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CONTENTS
CAMSHAFT AND CAMSHAFT OIL
SEAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
CRANKSHAFT FRONT OIL SEAL. . . . . . . . . .25
CRANKSHAFT PULLEY. . . . . . . . . . . . . . . . . . .19
CRANKSHAFT REAR OIL SEAL
. . . . . . . . . .
CYLINDER HEAD GASKET. . . . . . . . . . . . . . . .29
ENGINE ASSEMBLY. . . . . . . . . . . . . . . . . . . . . .14
GENERAL INFORMATION. . . . . . . . . . . . . . . . . .2
OIL PAN AND OIL SCREEN . . . . . . . . . . . . . . .24
ON-VEHICLE SERVICE
. . . . . . . . . . . . . . . . . . . . .8
Basic idle Speed Adjustment. . . . . . . . . . . . . . . . . . . . . Refer to GROUP
Compression Pressure Check. . . . . . . . . ..
Curb Speed Check . . . . . . . . . ...
Drive Tension
Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mixture Check . . . . . . . . . . . . . . . . .. . . . . . ..
Ignition Timing Check. . . . . . . . .....................
Lash Adjuster Check . . . . . . . . . . . . . . . . .
......
. . . . .
Manifold Check . . . . . . . . . . . . .13
SEALANTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
SERVICE SPECIFICATIONS. . . . . . . . . . . . . . . . .3
SPECIAL TOOLS. . . . . . . . . . . . . . . . . . . . . . . . . . .4
TIMING BELT. . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . .
7

ENGINE ‘Service
SERVICE SPECIFICATIONS
Items
Drive belt
(For
generator)
Standard value Limit
TensionWhen checked
(Ibs.) When a new belt is installed
When a used belt is installed
110)
DeflectionWhenchecked9.0
mm (in.)When a new belt is installed 7.5 10.5
value> 9.0 12.0
Drive beltTensionWhenchecked
(For power
When a new belt is installed
steering oil
When a used belt is installed
without
mm (in.)When a new belt is installed
When a used belt is installed
Drive belt
TensionWhenchecked
(For power
When a new belt is installedsteering oil
and A/C When a used belt is installed
DeflectionWhenchecked
mm (in.)When a new belt is installed
When a used belt is installed
Curb idle speed
mixtureCO contents
HC contents ppm
pressure (at 250 400 (psi)
pressure difference of all cylinder
ntake manifold vacuum
110)
110)
6.5 9.5
1 1 4 . 6 )
608 706 (136.7
412 510 (92.8 114.6)
8.0 9.0
100
0.5 or less
100 or less
1 , 5 5 1
max. 25%
min. 60 (18)
SEALANTS
Items
Semi-circular packing
Oil pan gasket to
Oil pump to
Outside camshaft bearing cap Specified sealant
Loctite 5699 or equivalent
Loctite 518 or equivalent
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ENGINE Troubleshooting,
TROUBLESHOOTING
Symptom Probable causeRemedy
Compression too low Cylinder head gasket blown Replace gasket
Piston ring worn or damaged Replace rings
Piston or cylinder worn Repair or replace piston
cylinder
block
Valve seat worn or damaged Repair or replace valve seat ring
Oil pressure drop Engine oil level too low Check engi ne oil level
Oil pressure switch faulty Replace oil pressure switch
Oil filter clogged
Install new filter
Oil pump gears or cover
Replace gears and/or cover
Thin or diluted engine oil Change engine correct
Oil relief valve stuck (open) Repair relief valve
Excessive bearing clearance Replace bearings
pressure too highOil relief valve stuck (closed) Repair relief valve
valves Incorrect lash adjuster Bleed air or replace lash adjuster
Thin or diluted engine oil (low oil pressure) Change engine oil
Valve stem or valve guide worn or damaged Replace va lve
guide
rod noise/lnsuff oil supplyCheck engine oil level
nain bearing noise Low oil pressure Refer
pressure drop”
Thin or diluted engine oil Change engine oil
Excessive bearing clearance Replace bearings
belt noiseIncorrect belt tension
Adjust belt tension replace-timing
belt
engine rolling Loose engine roll stopper (Front, Re
ar)Retighten
vibration
Loose transaxle mount bracket Retighten
Loose engine mount bracket Retighten
Loose center member Retighten
Broken transaxle mount insulator
Replace
Broken engine mount insulatorReplace
Broken roll stopper insulatorReplace
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ENGINE On-vehicle
Power
Powersteering oilpump pulleyTension
pulley
POWER STEERING OIL PUMP DRIVE BELT
CHECK Use the belt tension gauge to check belt tension at the shown
point or check deflection by applying 98 (22 to the
shown point.
Standard value:
Tension: 400
(90 110
Deflection: 11 14.0 mm in.)
POWER STEERING OIL PUMP DRIVE BELT TENSION
ADJUSTMENT 1. Loosen power steering oil pump fixing bolt (A, C).
2. Move power steering oil pump, tension belt moder ately
and adjust tension.
Standard value:
When a new belt is when a used belt is
installedinstalled
Tension489-712
I
Deflection6.5-9.5
mm (in.)I
Tighten the fixing bolt (A).
Tightening torque: 39 Nm (29
4. Tighten the remaining fixing bolts and C).
Tightening torque: 39 Nm (29
5.Check the belt deflection mount and readjust if nec essary.
Caution
Turn the crankshaft one full rotation or more clock wise
before this check.
POWER STEERING OIL PUMP AND A/C COMPRESSOR
DRIVE BELT TENSION CHECK
Use the belt tension gauge to check belt tension at the shown
point or check deflection by applying 98
(22 Ibs.) to the
point.
Standard value:
Tension: 412 510 (92.6 114.6 Ibs.)
Deflection: 10.0
11.0 mm in.)
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