1996 HONDA CIVIC seal

Valves
Camshaft/Rocker Arms and
Camshaft Seal/Pulley
Installation (cont'd)
4. Install the valve spring and valve retainer. then
install the valve spring compressor. Compress the
spring and installthe valve keepers.
NOTE: Place the end of the valve spring with close-
ly wound coils toward the cylinder head.
lCornmercially available)Snap-on CFrll or KD - 3tX'with #32 JAWS
Lightly tap the end of each valve stem two or three
times with a plastic mallet to ensure proper seating
of the valve and valve keepers.
NOTE: Tap the valve stem only along its axis so you
do not bend the stem.
' 6-44
Installation
CAUTION:
. Make sure that all tockers are in alignment with their
valvgs when torquing the rocket assembly bolts,. Valve locknuls should be loosened and adiusting
screws backed off bofore installation.
. To prevont tho rocker arm a$smbly from coming
apad, l6av€ the camshaft holder bohs in the holdeB.
1. After wiping down the camshaft, camshaft seal andjournals in the cylinder head, lubricate both sur-
faces and install the camshaft.
2. Clean and install the oil control orifice with a new
O-ring.
CAMSHAFT SEALSeal housing surface should be dry.Apply a light coat of oil to camshaftand inner lip of seal.
3. Turn the camshaft until its keyway is facing up (No.
piston TDC).
OIL CONTROL ORIFICE

Cylinder Head
Installation (cont'dl
Position the camshaft correctly (see page 6-20).
Tighten the cylinder head bolts sequentially in four
steps.
rsr st.p: O - @ 20 N.m (2.0 kgf.m, 14 lbf'ft|
2nd srep: O - @ 49 N.m (5.0 kgf.m, 36 tbtft)
3rd stop; O - @ 67 N.m {6.8 kgf.m, /r9 lbl'ft}
4th st6p: O, O 67 N.m 16.8 kgf.m, 49 tbf.ftl
NOTE:
. We recommend using a beam-type torque
wrench, When using a preset-type torque wrench.
be sure to tighten slowly and not to overtighten.
. If a bolt makesany noisewhileyou aretorquing it,
loosen the bolt, and retighten it from the 1st step,
CYLINDER HEAD BOLTS TOROUE SEOUENCE:
Install the intake manifold and tighten the nuts in a
crisscross pattern in two or three steps, beginning
with the inner nuts (see pages 9-2 thru 9-4).
. Always use a new intake manifold gasket.
Install the exhaust manifold and tighten the nuts in
a crisscross pattern in two or three steps, beginning
with the inner nut {see pages 9-6 and g-7).
. Always use a new exhaust manifold gasket.
Install the exhaust manifold bracket. lnstall the
exhaust pipe A and the bracket, then install the cover.
4.
6-46
\-
(
7.Installthe timing belt (see page 6-20).
Adjust the valve clearance (see page el2),
Install the head cover gasket in the groove of the
cylinder head cover, Seat the recesses for the
camshaft first, then work it into the groove around
the outside edges.
NOTE:
. Before installing the head cover gasket, thor-
oughly clean the seal and the groove.
. When installing, make sure the head cover gas-
ket is seated securely in the corners of the
recesses wath no gap.
COBNERS OFTHE RECESS
CORNERS OFTHE REcEss covEB
Apply liquid gasket to the head cover gasket at the
four corners of the recesses.
NOTE:
. Use liquid gasket, Pan No. 08718 - 0001 or 08718- 0003.
. Check that the mating surfaces are clean and dry
before applying liquid gasket.
. Do not install the parts if five minutes or more
have elapsed since applying liquid gasket.
Instead, reapply liquid gasket after removing old
residue.
. After assembly, wait at least 30 minutes before
filling the engine with oil.
8.
9.
I
10.

11. When installing the cylinder head cover, hold the
head cover gasket in the groove by placing your fin-
gers on the camshaft holder contacting surfaces
(top of the semicircles)
Set the spark plug seal on the spark plug tube.
Once the cylinder head cover is on the cylinder
head, slide the cover slightly back and forth to seat
the head cover gasket.
NOTE:
. Before installing the cylinder head cover, clean
the cylinder head contacting surfaces with a
shop towel.
. Do not touch the parts where liquid gasket was
aDolied.
. Take care not to damage the spark plug seals
when installing the cylinder head cover,
. Visually check the spark plug seals for damage.
. Replace any washer that is damaged or deterio-
rated.
6x1.0mm9.8 N.m 11.0 ksf.m,7.2lbf ftl
\g-----*o""t'Ptl
veEE
\_
6-47
12. Tighten the nuts in two or thre€ steps. In the final
step, tighten all bolts, in sequence, to 9 8 N'm (1.0
kgf.m, 7.2 lbf.ft).
NOTE: After assemblv, wait at least 30 minutes
before filling the engine with oil
After installation, check that all tubes, hosss and
connectors are installed correctlY
1?

Gylinder Head/Valve Train
816A2 engine
Special Tools ............. 6'50 Rocker Arms
VTEC Contlol System
Troubfeshooting Flowchart ............ 6-51 Disassembly/Reassembly ...............6'72
VTEC Solenoid ValveRocker Arms and Lost Motion Assemblies
Inspection ...""'...... 5-54 Inspection .........""' 6-73
VTEC Rocker ArmsRocker Arms and Shafts
Manual Inspection ........................... 6-54 Clearance Inspection ..'..."'.............. 6-74
Inspection Using Special Tools .....' 6-55 Camshafts
Valve Clearance
.^ Adiustment .........." 6-57 Valves'Valve Springs and Valve Seals
. t Crankshaft Pulley and Pulley Bolt Removal """"""""' 6-77
Replacement ..".....6-59 Valve Seats
Timing BeltReconditioning ......6'78
Cylinder Headlnstallation '............ 6-82

VTEC Control System
Troubleshooting Flowchart (cont,d)
VTEC PRESSURE SWITCH 2PCONNECTOR
Wire side of temaleterminals
OIL PRESSURE GAUGE(Comm.rcially avail.bte)
GAUGE JOINT ADAPTERSNAP.ON MT26.1710 x 1.0 ftm. Use new washer wheninstalling the sealing bott.
NOTE: Keep measuring time as shorr aspossible because engine is running witn noload lless than one minute).
6-52
(
VTEC SOLENOID VALVE lPCONNECTOF
Ir------r I
lLl.ll-r
II
It
Terminal side ofmale terminal
I
(From page 6-5l l
(To page 6-53)
Test tha VTEC P.es3uro SwitchWi.e:Measure voltage across the VTECpressure switch 2P connector.
Ropair opon in the wiro batwoenVIEC pr...urc switch and G lot .lf the wiro is OK, 3ubltitutr aknown-good ECM and rochack.
ls there battery voltage?
Test the VTEC Solenoid V.tve:1. Turn the ignition switch OFF.2. Disconnect the VTEC solenoidvalve 1P connector.3. Check for continuity betweenthe VTEC solenoid valve 1Pconnector terminal No, I andbody ground.
ls there 14 - 30 O?
Te3t the VTEC Sotonoid Vatve:'1. Remove the VTEC pressureswitch and install the specialtool as shown. then reinstallthe VTEC pressure switch.2. Reconnect the VTEC solenoidvalve 1P connector and VTECpressure switch 2P connector,3. Connect the tachometer (seesection 1l).4. Start the engine.5. Warm up engine to normaloperatrng temperature (cool-ing fan comes on).6. Check oil pressure at enginespeed of 1,000,3,000 and5,000 rpm.
ls pressure below 49 kPa(0.5 kgflcm,,7 psi)?Inipoct thg VTEC aolenoid valvel3ee P8go 6-54).
I

Cylinder Head
lllustrated Index
CAUTION:
. To avoid damaging the cylinder head, wait until the engine coolant tempsraturo drops below 100"F (38"C1 bofote
removing it,
. when handling a metal gasket, take caro not to fold the gaskot or damage the contact surface of the gasket.
NOTE: Use new O-rings and gaskets when reassembling.
CYLINDER HEAO
PLUGReplace.
)@
DISTRIBUTOR
8 x 1 ,25 mm
27 N.m P.E kgl m.
20 tbf.foApply engine oil to
the threads.
cr.rMp.S
CAMSHAFT A"o''*t*'; wes@
OIL SEALReplace.
6 x l,omm9.8 N'm tl.0 kgt'm,7.2lbf ft)
RUBBER SEALReplace when damaged
or detedorated.
6x1.0mm9.8 N.m (1.0 kgf'm,
7.2 rbnftl
fi%
IGNMONWIRE COVER
CYLINOER HEAD
COVERRefer to page 6-86
when installing
HEAD COVER GASKETReplace when leaking, damaged
or deteriorated.Apply liquid gasket at thecorners of the recesses, Page 6-86
8 x 1,25 mm24 N.m {2.4 kgf'm,
1? tbf.ftl
EXHAUST
10 x 1.25 mm56 N.m (5.7 kgf m,,r1 lbl.ft)
(cont'd)
6-65

Cylinder Head
lllustrated Index (cont'dl
CYLINDER HEADBOLTS11 x 1.5 mm83 N.m {8.5 kg{.m, 61Apply engine oilto threads.
INTAKE VALVE SPRING INNER
VALVE KEEPERS
SPRING RETAINER
INTAKE VAI.VE SPRING OUTER
valvEKEEPEBS\:""j"*'
SPRING RETAINER
EXHAUST VALVESPRING
VALVE SEALReplace.
VALVE
LOST MOTIONASSEMBLY
EXHAUST VAL
VALVE SEALReplace.
SPRING SEAT
VALVE GUIDE
INTAKE VALVE
ROCKER SHAFT
SEALING AOLTS.20 mm64 N.m (6.5 kgt.m, 47 tbf.ft)
t
il
HEAO OIL CONTROLORIFICEClea n.
a
6-66

Rocker Arms
Removal
'1. Hold the rocker arms together with a rubber band to
prevent them from separating.
Remove the intake and exhaust rocker shaft oil con-
trol orifices, then remove the VTEC solenoid valve
and the sealing bolts.
NOTE: The shapes ofthe intake and exhaust oil con-
trol orifices are different, ldentify the parts as they
are removed to ensure reinstallation in the original
locauons.
2.
EXHAUST ROCKERSHAFT ORIFICE
INTAKE ROCKERORIFIGEClean.Clean.
O.RINGO.RINGReplace.
RUEBER BAND
Replace. _ (lX
-dJ'v-l- \
6-71
3. Screw 12 mm bolts into the rocker arm shafts.
Remove each rocker arm set while slowly pulling
out the intake and exhaust rocker arm shafts.
12 mm BOLTS
ROCKER ARM SHAFTS