2003 HONDA CIVIC Head

Cylinder Head
14.
Cam Chain Removal (cont'd)
Loosely install the crankshaft pulley.
Turn the crankshaft counterclockwise to compress
the auto-lensioner,
Align the holes on the lock (A) and the auto-
tensioner (B), then insen a 1.5 mm (0.06 in.)
diameter pin (C) into the holes. Turn the crankshaft
clockwise to secure the Din.
t5.
6-14
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16. Remove the auto-tensioner.
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17. Remove the cam chain guide B.
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Gylinder Head
Cam Chain Installation (cont'dl
3. Installthe cam chain on the crankshaft sprocket
with the colored piece (A) aligned with the punch
mark (B) on the crankshaft sprocket.
Installthe cam chain on the VTC actuator and
exhaust camshaft sprocket with the punch marks(A) aligned with the two colored pieces (B).
B
6-16
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5. Installthe cam chain guide A (A) and tensioner arm(B).
6x1.0mm12 N.m{1,2 kgf.m,8.7 tbf.ftt
I'6
8 x 1.25 mm22 N.m12.2kgt.m,16 tbf.ft)
6. Install the auto-tensi
6x1,0mm12Nm(1.2 kgt.m, 8.7 lbf ti)
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Gylinder Head
Cam Chain Installation (cont'd)
'15. Install the new O-ring (A) on the chain case. Set the
edge of the chain case (B) to the edge of the oil pan(C), then install the chain case on the cvlinder block(D).
NOTE: When installing the chain case, do not slide
the bottom surface on the oil pan mounting surface.
',.9
6x1.0mm12 N.m(1.2 kgt.m.8.7 lbf.ft)
6x1.0mm12Nm(1.2 kgf.m,8.7 lbf.ft)
6-18
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16. lnstallthe side engine mount.bracket.
17. Installthe upper bracket (A), then tighten the bolv
nuts in the numbered seouence shown.
6x1.0 mm12 N.m{1.2 kgl m, 8.7 lbf ft}
12x1.25 mm54 N.m(5.5 kgt m, 40 lbf.ft)
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18. Install the ground cable (B).
rbf.ft)

19.
20.
lnstall the variable valve timing control (VTC) oil
control solenoid valve (see step 1 on page 11'127).
Connect the crankshaft position (CKP) sensor
connector {A) and VTC oil control solenoid valve
connector (B).
21. Install the crankshaft pulley (see page 6-12).
22. Installthe cylinder head cover (see page 6-41).
23. Installthe drive belt.
24. Installthe splash shield.
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Auto-Tensioner RemovaU
lnstallation
Removal:
1. Remove the chain case cover.
Turn the crankshaft counterclockwise to compress
the auto-tensroner.
{cont'd)
6-19

Gylinder Head
Auto-Tensioner Removal/l nstallation
3. Align the holes on the lock (A) and the auto-
tensioner (B), then insert a 1.5 mm (0.06 in.)
diameter pin (C) into the holes. Turn the crankshaft
clockwise to secure the oin.
4. Remove the auto-tensioner.
6-20
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(cont'dl
Installation:
1. Install the auto-tensioner.
\
6x1.0mm12 N.m {1.2 kgt.m, 8.7 lbt.tt)
Remove the pin from the auto-tensioner.
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Gylinder Head
Cylinder Head Cover Removal
1. Remove the intake manifold cover.
2. Remove the four ignition coils (see page 4-'18).
3. Remove the dipstick (A) and breather hose (B).
6-22
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4, Remove the cylinder head cover
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Gylinder Head Removal
NOTE:. Use fender covers to avoid damaging painted
surfaces.
To avoid damage, unplug the wiring connectors
carefully whlle holding the connector portion.
To avoid damaging the cylinder head, wait until the
engine coolant temperature drops below 100'F (38"C)
betore loosening the cylinder head bolts.
Mark all wiring and hoses to avoid misconnection.
Also, be sure that they do not contact other wiring or
hoses, or interfere with other parts.
'1.
2.
3.
Drain the engine coolant (see page 10-6).
Remove the drive belt (see page 4-26).
Remove the intake manifold {see page 9-3).
Remove the air cleaner housing (see step 7 on page
5-2t.
5. Remove the water bypass hose (A).
Remove the exhaust manifold (see page 9-7
Remove the cam chain (see page 6-12).
6.
7.
).
8. Remove the engine wire harness connectors and
wire harness clamps from the cylinder head.
. Engine coolant temperature (ECT) sensor
conneclor. Camshaft position (Cl\4P) (top dead center (TDC))
sensor B connector. Camshaft posilion (CMP) sensor A connector
9. Remove the upper radiator hose (A) and heater
hose (B).
'10. Remove the harness holder (A)from the bracket,
then remove the connecting pipe mounting boh {B)
and brake booster vacuum line mounting bolts {C).
(cont'd)
1 1. Remove the water bvpass hose (D).
6-23

Cylinder Head
tJ.
Cylinder Head Removal (cont'd)
Remove the rocker arm assembly (see page 6-26).
Remove the cylinder head bolts. To prevent
warpage, unscrew the bolts in sequence 1/3 turn at
a time; repeat the sequence until all bolts are
loosened.
CYLINDER HEAD BOLTS LOOSENING SEQUENGE:
14. Remove the cylinder head.
6-24
VTC Actuator, Exhaust Camshaft\
Sprocket Replacement
Removal:
1. Remove the cam chain (see page 6-12).
2. Hold the camshaft with an open-end wrench, then
loosen the variable valve timing control (VTC)
actuator mounting bolt and exhaust camshaft
sprocket mounting bolt.
Remove the VTC actuator and exhaust camshaft
sprocket.
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