Page 1529 of 2870
ME(H4DOTC)-71
MECHANICAL
Camshaft
3) Camshaft oil seal installation: Apply grease to
new oil seal lips and press onto front end of cam-
shaft by using ST1 and ST2.
NOTE:
Use a new oil seal.
ST1 499587600 OIL SEAL INSTALLER
ST2 499597200 OIL SEAL GUIDE
4) Rocker cover installation:
(1) Install the gasket on rocker cover. Install the
peripheral gasket and ignition coil gasket.
(2) Apply liquid gasket to four front open edges
of peripheral gasket.
Liquid gasket:
Part No. 004403007
THREE BOND 1215 or equivalent
2.0 L MODEL 2.5 L MODEL
(3) Install the rocker cover on cylinder head.
Ensure the gasket is properly positioned during
installation.
(4) Tighten the rocker cover tightening bolt in al-
phabetical sequence shown in the figure, and
then tighten to specified torque.
Tightening torque:
6.4 N
⋅m (0.65 kgf-m, 4.7 ft-lb)
ME-00116
ST1
ST2
ME-00759
RH
LH
ME-00776
ME-00777
(E)
(F)(H)
(G)
(D),(L) (A),(I)(C),(K)
(B),(J)
Page 1530 of 2870

ME(H4DOTC)-72
MECHANICAL
Camshaft
5) Install the oil pipe.
Tightening torque:
30 N
⋅m (3.1 kgf-m, 22.1 ft-lb)
6) Connect the oil flow control solenoid valve con-
nector.
7) Install the spark plug cord.
8) Similarly, install the parts on right-hand side.
9) Install the tensioner bracket.
Tightening torque:
25 N
⋅m (2.5 kgf-m, 18.1 ft-lb)10) Install the timing belt cover No. 2 (RH).
Tightening torque:
5 N
⋅m (0.5 kgf-m, 3.6 ft-lb)
11) Install the timing belt cover No. 2 (LH).
Tightening torque:
5 N
⋅m (0.5 kgf-m, 3.6 ft-lb)
12) Install the crank sprocket.
ME(H4DOTC)-68, INSTALLATION, Crank Sprock-
et.>
13) Install the cam sprockets.
ME(H4DOTC)-67, INSTALLATION, Cam Sprock-
et.>
14) Install the timing belt assembly.
ME(H4DOTC)-60, INSTALLATION, Timing Belt
Assembly.>
15) Install the timing belt cover.
ME(H4DOTC)-57, INSTALLATION, Timing Belt
Cover.>
16) Install the crank pulley.
55, INSTALLATION, Crank Pulley.>
17) Install the V-belt.
INSTALLATION, V-belt.>
ME-00712
ME-00711
ME-00105
ME-00107
ME-00106
Page 1531 of 2870

ME(H4DOTC)-73
MECHANICAL
Camshaft
C: INSPECTION
1) Measure the bend, and repair or replace if nec-
essary.
Limit:
0.020 mm (0.0008 in)
2) Check the journal for damage and wear. Re-
place if faulty.
3) Measure the outside diameter of camshaft jour-
nal. If the journal diameter is not as specified,
check the oil clearance.
4) Measurement of the camshaft journal oil clear-
ance:
(1) Clean the bearing caps and camshaft jour-
nals.
(2) Place the camshafts on cylinder head.
(Without installing the valve rocker.)
(3) Place a plastigage across each of the cam-
shaft journals.
(4) Gradually tighten the cap in at least two
stages in alphabetical sequence shown in the
figure, and then tighten to specified torque.
Do not turn the camshaft.
Tightening torque:
T1: 10 N
⋅m (1.0 kgf-m, 7.2 ft-lb)
T2: 20 N
⋅m (2.0 kgf-m, 14.5 ft-lb)
2.0 L MODEL 2.5 L MODEL
(5) Remove the bearing caps.
(6) Measure the widest point of plastigage on
each journal. If the oil clearance exceeds the
limit, replace the camshaft. If necessary, replace
the camshaft caps and cylinder head as a set.
Standard:
0.037 — 0.072 mm (0.0015 — 0.0028 in)
Limit:
0.10 mm (0.0039 in)
(7) Completely remove the plastigage.
5) Check the cam face condition; remove the minor
faults by grinding with oil stone. Measure the cam
height H, replace if the limit has been exceeded.
Cam height: H
Standard:
2.0 L MODEL
Intake:
44.75 — 44.85 mm (1.762 — 1.766 in)
Exhaust:
44.75 — 44.85 mm (1.762 — 1.766 in)
2.5 L MODEL
Intake:
46.55 — 46.65 mm (1.833 — 1.837 in)
Exhaust:
46.75 — 46.85 mm (1.841 — 1.844 in)
Camshaft journal
Front Center, rear
Standard37.946 — 37.963 mm
(1.4939 — 1.4946 in)29.946 — 29.963 mm
(1.1790 — 1.1796 in)
ME-00118
ME-00371
(F) (D)(C)
T1
T2(A)(E)
(B)
ME-00774
(A)(E)
(F)(B)(D)
(C)T2
T1
ME-00119
Page 1532 of 2870
ME(H4DOTC)-74
MECHANICAL
Camshaft
Limit:
2.0 L MODEL
Intake:
44.65 mm (1.758 in)
Exhaust:
44.65 mm (1.758 in)
2.5 L MODEL
Intake:
46.45 mm (1.829 in)
Exhaust:
46.65 mm (1.837 in)
Cam base circle diameter A:
37.0 mm (1.457 in)
6) Measure the thrust clearance of camshaft with
dial gauge. If the clearance exceeds the limit, re-
place the caps and cylinder head as a set. If neces-
sary, replace the camshaft.
Standard:
0.068 — 0.116 mm (0.0027 — 0.0046 in)
Limit:
0.14 mm (0.0055 in)
ME-00120
H
A
ME-00121
Page 1533 of 2870

ME(H4DOTC)-75
MECHANICAL
Cylinder Head Assembly
19.Cylinder Head Assembly
A: REMOVAL
1) Remove the V-belt.
REMOVAL, V-belt.>
2) Remove the crank pulley.
ME(H4DOTC)-55, REMOVAL, Crank Pulley.>
3) Remove the timing belt cover.
ME(H4DOTC)-57, REMOVAL, Timing Belt Cover.>
4) Remove the timing belt assembly.
ME(H4DOTC)-58, REMOVAL, Timing Belt Assem-
bly.>
5) Remove the cam sprocket.
ME(H4DOTC)-67, REMOVAL, Cam Sprocket.>
6) Remove the intake manifold.
FU(H4DOTC)-14, REMOVAL, Intake Manifold.>
7) Remove the bolt which installs the A/C compres-
sor bracket on cylinder head.
8) Remove the camshaft.
69, REMOVAL, Camshaft.>
9) Remove the cylinder head bolts in alphabetical
sequence shown in the figure.
Leave bolts (A) and (D) engaged by three or four
threads to prevent the cylinder head from falling.
10) While tapping the cylinder head with a plastic
hammer, separate it from cylinder block. Remove
the bolts (A) and (D) to remove cylinder head.11) Remove the cylinder head gasket.
NOTE:
Do not scratch the mating surface of cylinder head
and cylinder block.
12) Similarly, remove the cylinder head (RH).
B: INSTALLATION
1) Install the cylinder head and gaskets on cylinder
block.
NOTE:
Use new cylinder head gaskets.
Be careful not to scratch the mating surface of
cylinder head and cylinder block.
2) Tighten the cylinder head bolts.
(1) Apply a coat of engine oil to the washers and
bolt threads.
(2) Tighten all bolts to 29 N⋅m (3.0 kgf-m, 22 ft-
lb) in alphabetical sequence.
(3) Tighten all bolts to 69 N⋅m (7.0 kgf-m, 51 ft-
lb) in alphabetical sequence again.
(4) Back off all bolts by 180° first; back them off
by 180° again in reverse order of installation.
(5) Tighten all bolts to 49 N⋅m (5.0 kgf-m, 36 ft-
lb) in alphabetical sequence.
(6) Tighten all bolts 80 to 90° in alphabetical se-
quence.
(7) Tighten all bolts by 40 to 45° in alphabetical
sequence again.
NOTE:
Do not tighten the bolts by more than 45°.
(8) Further tighten all bolts (A) and (B) by 40 to
45°.
NOTE:
Ensure that the total “re-tightening angle” in the
previous two steps do not exceed 90°.
3) Install the camshaft.
INSTALLATION, Camshaft.>
4) Install the A/C compressor bracket on cylinder
head.
5) Install the intake manifold.
17, INSTALLATION, Intake Manifold.>
6) Install the cam sprocket.
67, INSTALLATION, Cam Sprocket.>
ME-00122
(B)(C)
(D)
(E)
(F)(A)
ME-00122
(B)(C)
(D)
(E)
(F)(A)
ME-00123
(B)
(C)
(D)(E)
(F)(A)
Page 1534 of 2870
ME(H4DOTC)-76
MECHANICAL
Cylinder Head Assembly
7) Install the timing belt assembly.
ME(H4DOTC)-60, INSTALLATION, Timing Belt
Assembly.>
8) Install the timing belt cover.
ME(H4DOTC)-57, INSTALLATION, Timing Belt
Cover.>
9) Install the crank pulley.
55, INSTALLATION, Crank Pulley.>
10) Install the V-belt.
INSTALLATION, V-belt.>
C: DISASSEMBLY
1) Remove the valve lifters.
2) Compress the valve spring and remove the
valve spring retainer key. Remove each valve and
valve spring.
ST1 498267600 CYLINDER HEAD TABLE
ST2 499718000 VALVE SPRING REMOVER
NOTE:
Keep the removed parts in order for re-installing
in their original positions.
Mark each valve to prevent confusion.
Use extreme care not to damage the lips of the
intake valve oil seals and exhaust valve oil seals.
ME-00124
ST1
ST2
Page 1535 of 2870
ME(H4DOTC)-77
MECHANICAL
Cylinder Head Assembly
D: ASSEMBLY
(1) Exhaust valve (5) Intake valve oil seal (9) Valve lifter
(2) Intake valve (6) Valve spring (10) Exhaust valve oil seal
(3) Cylinder head (7) Retainer (11) Intake valve guide
(4) Valve spring seat (8) Retainer key (12) Exhaust valve guide
ME-00003
(3) (1)
(2)(11) (4) (5) (6) (7) (8) (9)
(11)
(12)
(12)(10)(4)
(4)(5) (6)
(6)(7)
(7)(8)
(8)(9)
(9)
(10) (4)
(6)
(7)
(8)
(9)
Page 1536 of 2870

ME(H4DOTC)-78
MECHANICAL
Cylinder Head Assembly
1) Installation of valve spring and valve.
(1) Coat the stem of each valve with engine oil
and insert the valve into valve guide.
NOTE:
When inserting the valve into valve guide, use spe-
cial care not to damage the oil seal lip.
(2) Set the cylinder head on ST1.
(3) Install the valve spring and retainer using
ST2.
ST1 498267600 CYLINDER HEAD TABLE
ST2 499718000 VALVE SPRING REMOVER
NOTE:
Be sure to install the valve springs with their close-
coiled end facing the seat on cylinder head.
(4) Compress the valve spring, and then fit the
valve spring retainer key.
(5) After installing, tap the valve spring retainers
lightly with wooden hammer for better seating.
2) Apply oil to the surface of the valve lifter.
3) Install the valve lifter.
E: INSPECTION
1. CYLINDER HEAD
1) Make sure that no crack or other damage exists.
In addition to visual inspection, inspect the impor-
tant areas by means of red check.
2) Measure the warping of the cylinder head sur-
face that mates with crankcase by using a straight
edge (A) and thickness gauge (B).
If the warping exceeds 0.05 mm (0.0020 in), re-
grind the surface with a surface grinder.
Warping limit:
0.05 mm (0.0020 in)
Grinding limit:
0.3 mm (0.012 in)
Standard height of cylinder head:
127.5 mm (5.02 in)NOTE:
Uneven torque for the cylinder head nuts 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
Standard
1.0 mm (0.039 in)
Limit
1.7 mm (0.067 in)
Exhaust
Standard
1.5 mm (0.059 in)
Limit
2.2 mm (0.087 in)
ME-00124
ST1
ST2
ME-00126
(A)
(B)
ME-00127
W