Page 937 of 2870

ME(H4SO)-66
MECHANICAL
Cylinder Head
NOTE:
Uneven torque for the cylinder head bolts can cause
warping. When reassembling, pay special attention
to the torque so as to tighten evenly.
2. VALVE SEAT
Inspect the intake and exhaust valve seats, and
then correct the contact surfaces with valve seat
cutter if they are defective or when valve guides are
replaced.
Valve seat width: W
Intake (A)
Standard 1.1 mm (0.043 in)
Limit 1.8 mm (0.071 in)
Exhaust (B)
Standard 1.5 mm (0.059 in)
Limit 2.2 mm (0.087 in)
3. VALVE GUIDE
1) Check the clearance between valve guide and
stem. The clearance can be checked by measuring
the outside diameter of valve stem and the inside
diameter of valve guide with outside and inside mi-
crometers respectively.
Clearance between the valve guide and valve
stem:
Standard
Intake 0.035 — 0.062 mm (0.0014 — 0.0024
in)
Exhaust 0.040 — 0.067 mm (0.0016 —
0.0026 in)
Limit
0.15 mm (0.0059 in)
2) If the clearance between valve guide and stem
exceeds the standard value, replace the valve
guide or valve itself whichever shows greater
amount of wear. See the following procedure for
valve guide replacement.
Valve guide inner diameter:
6.000 — 6.012 mm (0.2362 — 0.2367 in)
Valve stem outer diameters:
Intake
5.950 — 5.965 mm (0.2343 — 0.2348 in)
Exhaust
5.945 — 5.960 mm (0.2341 — 0.2346 in)
(1) Place the cylinder head on ST1 with the
combustion chamber upward so that valve
guides enter the holes in ST1.
(A) Straight edge
(B) Thickness gauge
ST(A)
(B)
ME-00285
WW
(A) (B)
ME-00397
ME-00287
(A) Valve guide
(A)
ME-00288
ME-00289
X Y
Page 938 of 2870

ME(H4SO)-67
MECHANICAL
Cylinder Head
(2) Insert the ST2 into valve guide and press it
down to remove valve guide.
ST1 498267800 CYLINDER HEAD TABLE
ST2 499767200 VALVE GUIDE REMOVER
(3) Turn the cylinder head upside down and
place ST as shown in the figure.
Intake side:
ST 499767700 VALVE GUIDE ADJUSTER
Exhaust side:
ST 499767800 VALVE GUIDE ADJUSTER
(4) Before installing new oversize valve guide,
make sure that neither scratches nor damages
exist on the inside surface of valve guide holes
in cylinder head.
(5) Put new valve guide, coated with sufficient
oil, in the cylinder, and then insert the ST1 into
valve guide. Press in until the valve guide upper
end is flush with the upper surface of ST2.ST1 499767200 VALVE GUIDE REMOVER
Intake side:
ST2 499767700 VALVE GUIDE ADJUSTER
Exhaust side:
ST2 499767800 VALVE GUIDE ADJUSTER
(6) Check the valve guide protrusion.
Valve guide protrusion: L
Intake
20.0 — 20.5 mm (0.787 — 0.807 in)
Exhaust
16.5 — 17.0 mm (0.650 — 0.669 in)
(7) Ream the inside of valve guide with ST.
Gently rotate the reamer clockwise while press-
ing it lightly into valve guide, and return it also ro-
tating clockwise. After reaming, clean the valve
guide to remove chips.
CAUTION:
Apply engine oil to the reamer when reaming.
If the inner surface of the valve guide is torn,
the edge of the reamer should be slightly
ground with an oil stone.
If the inner surface of the valve guide be-
comes lustrous and the reamer does not chips,
use a new reamer or remedy the reamer.
(A) Valve guide
ME-00290
ST2
ST1
(A)
ME-00291
ST
(A) Valve guide
ST2
ME-00292
ST1
ME-00293(A)L
Page 939 of 2870
ME(H4SO)-68
MECHANICAL
Cylinder Head
ST 499767400 VALVE GUIDE REAMER
(8) Recheck the contact condition between
valve and valve seat after replacing valve guide.
4. INTAKE AND EXHAUST VALVE
1) Inspect the flange and stem of valve, and re-
place if damaged, worn, or deformed, or if “H” is
less than the specified limit.
H:
Intake
Standard 1.0 mm (0.039 in)
Limit 0.6 mm (0.024 in)
Exhaust
Standard 1.2 mm (0.047 in)
Limit 0.6 mm (0.024 in)
Valve overall length:
Intake
120.6 mm (4.75 in)
Exhaust
121.7 mm (4.79 in)2) Put a small amount of grinding compound on the
seat surface and lap the valve and seat surface.
MENT, Cylinder Head.> Install a new intake valve
oil seal after lapping.
ME-00294
ME-00295
H
H
Page 940 of 2870

ME(H4SO)-69
MECHANICAL
Cylinder Block
21.Cylinder Block
A: REMOVAL
NOTE:
Before conducting this procedure, drain the engine
oil completely.
1) Remove the intake manifold.
14, REMOVAL, Intake Manifold.>
2) Remove the V-belt.
MOVAL, V-belt.>
3) Remove the crank pulley.
45, REMOVAL, Crank Pulley.>
4) Remove the timing belt cover.
ME(H4SO)-47, REMOVAL, Timing Belt Cover.>
5) Remove the timing belt.
REMOVAL, Timing Belt.>
6) Remove the cam sprocket.
53, REMOVAL, Cam Sprocket.>
7) Remove the crank sprocket.
45, REMOVAL, Crank Pulley.>
8) Remove the generator and A/C compressor with
their brackets.
9) Remove the rocker cover.
10) Remove the cylinder head bolts in alphabetical
sequence shown in the figure.
NOTE:
Leave bolts (a) and (c) engaged by three or four
threads to prevent cylinder head from falling.
11) While tapping the cylinder head with a plastic
hammer, separate it from cylinder block.12) Remove the bolts (a) and (c) to remove cylinder
head.
13) Remove the cylinder head gasket.
NOTE:
Do not scratch the mating surface of cylinder head
and cylinder block.
14) Similarly, remove the right side cylinder head.
15) Remove the clutch housing cover. (MT model)
16) Remove the flywheel (MT model) or drive plate
(AT model).
Using the ST, lock the crankshaft.
ST 498497100 CRANKSHAFT STOPPER
MT model
AT model
(A) Front
ME-00296
(a)
(b)(c) (e)
(f) (A)
(d)
(A) Front
ME-00296
(a)
(b)(c) (e)
(f) (A)
(d)
NE-00297ST
ME-00298
Page 941 of 2870

ME(H4SO)-70
MECHANICAL
Cylinder Block
NOTE:
Using STs, remove the flywheel. (2.5 L MT model)
ST1 498497100 CRANKSHAFT STOPPER
ST2 499057000 TORX PLUS
17) Remove the oil separator cover.
18) Remove the water by-pass pipe for heater.
19) Loosen the bolts in alphabetical sequence as
shown in the figure, and then remove water pump.
20) Remove the oil pump from cylinder block.
Use a flat-tip screwdriver as shown in the figure
when removing the oil pump.
NOTE:
Be careful not to scratch the mating surface of cyl-
inder block and oil pump.
21) Removal of oil pan
(1) Turn the cylinder block to face the #2 and #4
piston sides upward.
(2) Remove the bolts which secure oil pan to
cylinder block.(3) Insert a oil pan cutter blade between cylin-
der block-to-oil pan clearance, and then remove
the oil pan.
NOTE:
Do not use a screwdriver or similar tool in place of
oil pan cutter.
22) Remove the oil strainer stay.
23) Remove the oil strainer.
24) Remove the baffle plate.
25) Remove the oil filter using ST.
ST 498547000 OIL FILTER WRENCH
(A) Flywheel
(A)
ME-00382
ST1ST2
ME-00333
(B)
(F) (D)(C)
(A)
(E)
ME-00138
ME-00137
ME-00299
ST
Page 942 of 2870
ME(H4SO)-71
MECHANICAL
Cylinder Block
26) Remove the water pipe.
27) Remove the service hole cover and service
hole plugs using hexagon wrench [14 mm (0.55
in)].28) Rotate the crankshaft to bring #1 and #2 pis-
tons to bottom dead center position, and then re-
move the piston snap ring through service hole of
#1 and #2 cylinders using needle nose plier.
ME-00300
(1) Service hole plug (3) Snap ring (5) Service hole cover
(2) Gasket (4) Piston pin (6) O-ring
ME-00139
(3)
(4) (2)(1)
(3)
(4)
(5)
(6)
(2)(3)
(2)
(1)(3)(4)
(4)
(1)
ME-00140
ME-00141
Page 943 of 2870

ME(H4SO)-72
MECHANICAL
Cylinder Block
29) Draw out the piston pin from #1 and #2 pistons
using ST.
ST 499097700 PISTON PIN REMOVER
NOTE:
Be careful not to confuse the original combination
of piston, piston pin and cylinder.30) Similarly remove the piston pins from #3 and #4
pistons.
31) Remove the bolts which connect cylinder block
on the side of #2 and #4 cylinders.
32) Back off the bolts which connect cylinder block
on the side of #1 and #3 cylinders two or three
turns.
33) Set up the cylinder block so that #1 and #3 cyl-
inders are on the upper side, and then remove the
cylinder block connecting bolts.
34) Separate the cylinder blocks (RH) and (LH).
NOTE:
When separating the cylinder block, do not allow
the connecting rod to fall and damage the cylinder
block.
35) Remove the rear oil seal.
36) Remove the crankshaft together with connect-
ing rod.
37) Remove the crankshaft bearings from cylinder
block using hammer handle.
NOTE:
Do not confuse the combination of crankshaft bear-
ings. Press bearing at the end opposite to locking
lip.38) Draw out each piston from cylinder block using
wooden bar or hammer handle.
NOTE:
Do not confuse the combination of piston and cylin-
der.
ME-00142
ST
(1) Cylinder block (3) Crankshaft (5) Piston
(2) Rear oil seal (4) Crankshaft bearing
ME-00143
(2)
(3)(4)
(4) (5)
(5) (1) (1)
Page 944 of 2870
ME(H4SO)-73
MECHANICAL
Cylinder Block
B: INSTALLATION
NOTE:
Remove oil in the mating surface of bearing and
cylinder block before installation. Also apply a coat
of engine oil to crankshaft pins.
1) Position the crankshaft on #2 and #4 cylinder
block.
2) Apply liquid gasket to the mating surface of #1
and #3 cylinder block, and position it on #2 and #4
cylinder block.
Liquid gasket:
THREE BOND 1215 (Part No. 004403007) or
equivalentNOTE:
Do not allow liquid gasket to jut into O-ring grooves,
oil passages, bearing grooves, etc.
3) Apply engine oil to washers and bolt threads.
(1) Crankshaft bearing (3) Cylinder block (4) Rear oil seal
(2) Crankshaft
ME-00144
( 1 )
( 1 )
( 2 )
( 3 )
( 3 )
( 4 )
ME-00145