1 page HONDA CIVIC 1996 6.G Repair Manual

Rocker Arms
Disassembly/Reassembly
CAUTION: After installing the rocker shaft oritice, make suro thot the orifics is correctly installed in the hole of rockershaft by trying to turn the rocker shaft. ll the orifice is in place, it should not turn.
NOTE:
. ldentify parts as they are removed to ensure reinstallation in original locations.. Inspect rockershafts and rockerarms (see page6-73).
o Rocker arms must be installed in the same position if reused.. Clean the rocker shaft orifices when installino.
a
I erior. to ,"installing, clean arr the parts in sorvent, dry them, and appry rubricant to any contact surfaces.
y'///
CYLTNDER NUMBER
SEALING BOLTS 20 mm64 N m {6.5 kg{.m, /t7 lbf.ftl
k
r ROCKEN
INTAKE ROCKER ARM ASSEMBLIES

Camshafts
Inspection
NOTE:
. Do not rotate the camshaft during inspection.
. Removg the rocker arms and rocker shafts.
'L Put the camshafts and camshaft holders on the cylin-
der head. and then tighten the bolts to the specified
torque.
Specified Torque:
O -@: 8 mm botts 27 N.m {2.8 kgf.m,20 lbt'ft)
Apply engine oil to the threads,
O - @: 6 mm bolts 9.8 N.m (1.0 kgf m, 7.2 lbf'ft)
Seat the camshaft by pushing it toward the distribu-
tor end of the cylinder head.
Zero the dial indicator against the end of the distrib-
utor drive. then push the camshaft back and fonh
and read the end play.
Camshaft End Play:
Standard {New}: 0.05 - 0.15 mm
{0.002 - 0.006 inl
Service limil: 0.5 mm (0.02 in)
ooooooo
ooooo
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4.Remove the bolts. then remove the camshaft hold-
ers from the cylinder head.
- Lift the camshaft out of the cylinder head, wipe
clean, then inspect the lift ramps. Replace the
camshaft if lobes are pitted, scored, or excessively
- Clean the camshaft bearing surfaces in the cylin
der head, then set the camshaft back in place,
- Insert a plastigage strip across each iournal.
Put the camshaft on the cylinder head. then install
the camshaft holders, and then tighten the bolts to
the specified torque as shown in the left column on
this page.
Remove the camshaft holders, then measure the
widest portion of the plastigage on each journal.
Camshaft -to-Hold€1 Oil Clearsnce:
Standard {Newl: 0.050 - 0.089 mm
{0.002 - 0.004 inl
S6rvice Limit: 0.15 mm 10,006 inl
(cont'd)
6-75
PLASTIGAGE STRIP

Valve Seats
Reconditioning
1. Renew the valve seats in the cylinder
valve seat cutter.
NOTE: lf any guides are worn (see
replace them (see page 6-80) before
valve seats,
head with a
page 6-79),
cutting the
Carefully cut a 45o seat, removing only enough mate-
rial to ensure a smooth and concentric seat.
Bevel the upper edge of the seat with the 30" cutterand the lower edge of the seat with the 60. cutter.Check width of seat and adjust accordingly,
Make one more very light pass with the 45" cutter toremove any possible burrs caused bv the other cut-
ters.
Valve Seat Width:
Standard (Newl: 1.25 - 1.55 mm {0.0't9 - 0.061 in)Service Limii: 2.0 mm 10,08 inl
Sear Widrh
6-78
5. After resufacing the seat. inspect for even valveseating: Apply Prussian Blue Compound to thevalve face, and insert the valve in its original loca-tion in the head. then lift it and snap it closedagainst the seat several times.
PRUSSIAN BLUE COMPOUND
The actual valve seating surface, as shown by theblue compound, should be centered on the seat.. lf it is too high (closer to the valve stem), you mustmake a second cut with the 60. cutter to move itdown, then one more cut with the 45. cutter torestore seat width.
. lf it is too low (closer to the valve edge), you must
make a second cut with the 30. cutter to move itup. then one more cut with the 45. cutter to restoreseat width.
NOTE: The final cut should always be made withthe 45" cutter,
7. Insen the intake and exhaust valves in the head and
measure valve stem installed heioht.
Intaka Valve Stem Installed Height:
Standsrd lNaw): 37.465 - 37.935 mm(1./P50 - r.4935 inl
Sorvice Limit: 38.185 mm 0.5033 in)
Exhau3t Valv€ Stem Installed Height:
Standard (New): 37.165 - 37.6i|5 mm(1.46:t2 - 1.i1817 inl
Servico Limit 37.885 (1.4915 inl
lf valve stem installed height is over the service limit,replace the valve and recheck. lf it is still over the ser-vice limit, replace the cylinder head; the valve seat inthe h6ad is too deep.
(

Cylinder HeadValve Guides
Warpage
NOTE: lf camshaft-to-holder oil clearances (see page 475)
are not within specification, the head cannot be resurfaced.
lf camshaft-to-holder oil clearances are within specifica-
tions, check the head for warPage.
. lf warpage is less than 0.05 mm (0.002 in) cylinder
head resurfacing is not required.
. lf warpage is between 0.05 mm (0.002 in) and 0 2 mm
(0.008 in), resurface cylinder head
. Maximum resurface limit is 0.2 mm (0.008 in) based
on a height of 142 mm (5.59 in).
PRECISION STRAIGHT EDGE
Measure along edges, and three ways across center'
Cylinder Head Height:
Standard lNewl: 1i11.95 - 142.05 mm
15.589 - 5.593 in)
Valve Movement
Measure the guide-to-stem clearance with a dial indica-
tor while rocking the stem in the direction of normal
thrust (wobble method).
lntake Valve Stem-to-Guide Cl6arance:
Standard (Newl: 0.05 - 0.11 mm
(0.0020 - 0.0043 inl
Service Limit: 0.15 mm {0.0059 inl
Exhaust Valve Stem-to-Guide Clealance:
Standard lNewl: 0.10 - 0.16 mm
(0.0039 - 0.0063 inl
Service Limit: 0.24 {0.0094 in)
Valve extended 10 mm out from seat.
lf the measurement exceeds the service limit, recheck
using a new valve.
lf the measurement is now within the service limit.
reassemble using the new valve
lf the measurement still exceeds the limit. recheck using
the alternate method below. then replace the valve and
guide, if necessary.
NOTE: An alternate method of checking guide to stem
clearance is to subtract the o.D. of the valve stem, mea-
sured with a micrometer, from the l.D. of the valve guide,
measured with an inside micrometer or ball gauge.
Take the measurements in three places along the valve
stem and three places inside the valve guide.
The difference between the largest guide measurement
and the smallest stem measurement should not exceed
the service limit.
lntake Valv€ Stem-to-Guide Clsarance:
Standard lNswl: 0.025 - 0.055 mm
10.0010 - 0.0022 inl
service Limit: 0.08 mm (0.003 in)
Exhaust Valve Stem-to Guide Cl€arance:
Standard {Newl: 0.050 - 0.080 mm
{0.0020 - 0.0031 inl
Service Limit 0.ll mm (0.004 in)
6-79

7. Apply a thin coat of clean engine oil to the outside
of the new valve guide. Install the guide from the
camshaft side of the head; use the special tool to
drive the guide in to the specified installed height. lf
you have all l6 guides to do, you may have to reheat
the head,
VALVE GUIDE DRIVER,5.5 mm077i12 - (x)l01(x)
tr A\
Valve Guide Installed Hoight:
lntake: 12.55 - 13.05 mm {0.,194 - 0.514 in)
Exhaust: 12.55 - 13.05 mm 10.494 - 0.51'l in)
VALVE GUIDE
\
Reaming
NOTE: For new valve guides onlY.
1. Coat both reamer and valve guide with cufting oil.
2. Rotate the reamer clockwise the full length of the
valve guide bore.
Continue to rotate the reamer clockwise while
removing it from the bore
Thoroughly wash the guide in detergent and water
to remove any cutting residue.
Check clearance with a valve lsee page 6-73)
. Verify that the valve slides in the intake and
exhaust valve guides without exertlng pressure.
REAMER HANDLE
Turn r6amer in
clockwise direction
a
VALVE GUIOE REAMER. 5.5 mm
OTHAH - PJTO1IIB
6-81

I
Cylinder Head
Installation
lnstall the cylinder head in the reverse order of removal:
NOTE:
. Always use a new head and manifold gasket.. The cylinder head gasket is a metal gasket, Take carenot to bend it.
. Rotate the crankshaft, set the No. 1 piston at TDC (seepage 6-63).
. Do not use the middle cover and lower cover forstorang removed items.. Clean the middle cover and lower cover before instal_lation.
o Replace any washers that are damaged or deteriorated.
1. Install the cylinder head gasket, dowel pins and thehead oil control orifice on the cylinder head.
NOTE: Clean the oil control orifice when installing.
DOWEL PIN
6-84
2, Tighten the cylinder head bolts in two steps. In thefirst step, tighten all bolts in sequence to about 29N.m (3.0 kgf.m, 22 tbf.ftl. ln the final step, tighten inthe same sequence to 83 N.m (8.S kgf.m,6t lbf.ft).
NOTE:
. Apply clean engine oil to the bolt threads andunder the bolt head.. We recommend using a beam-type torquewrench. When using a preset-type torque wrench,be sure to tighten slowly and not to overtighten.. lf a bolt makes any noise while you are torquing it,loosen the bolt, and retighten it from the 1st step.
CYLINDER HEAD BOLT TOROUE SEOUENCE
11x 1.5 mm83 N.m 18.5 kgf.m, 61 tbf.ftl
Install the intake manifold and tighten the nuts in acflsscross pattern in two or three steps, beginningwith the inner nuts.. Always use a new intake manifold gasket.
Install the exhaust manifold and tighten the newself-locking nuts in a crisscross pattern in two orthree steps. beginning with the inner nuts.. Always use a new exhaust manifold gasket.
4.

Cylinder Head
Installation (cont'dl
10. Align the marks on the cylinder head plug to thecylinder head upper surface, then install the cylin,
der head plug in the cylinder head.
PLUGReplace.
Install the timing belt (see page 6-63).
Adjust the valve clearance (see page 6-61).
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, thorough-ly clean the head cover gasket and the groove.
. When installing, make sure the head cover gasket
is seated securely in the corners of the recesses
wrrn no gap.
11.
13.
1'
CYLINDEB HEAD
HEAD COVEB
6-86
(\
14. Apply liquid gasket to the head cover gasket at theeight corners of the recesses.
NOTE:
. Use liquid gasket, Part No. 08718 - 0001 or 08718- 0003.
. Check that the mating surfaces are clean and drybefore applying liquid gasket
. Do not install the parts if five minutes or morehave elapsed since applying tiquid gasket.
Instead, reapply liquid gasket after removing oldrestdue.
. After assembly. wait at least 30 minutes before
filling the engine with oil.

lllustrated Index
I runricate att internal parts with engine oil during reassembly'
NOTE:
o Apply liquid gaskettothe mating surfaces ofthe right side cover and oil pumpcase before installingthem'
. Use liquid gasket, part No 08718-0001 or08718-0003'
. Clean the oil pan gasket mating surfaces betore installing the oil pan
81642 engine:
DRAIN BOLT44 N,m {4.5 kgf'm,33 lbt'ft)
6 x 1.0 mm'11 N.m (1.1 kgI'm,
I tbl.ft)
OIL PANReter to page 7 27when installing.
6 r 1.O mm12 N.m t1.2 kgl'm, 8 7 lbf'lt)
OIL PAN GASKET
BUFFLE PLA
12 x 1.0 mm103 N.m {10.5 kgf'm,
76 tbr.ft)
6 x 1.0 mm11 N.m (1 .1 kgf.m,
8 tbI.fr)
GASKETReplace.FLYWHEEL(M/TI
12 x 1.0 mm
74 N.m (7.5
kof.m, 54 lbf'ft)
1^c{Eb\%^ t*^
*o"rr^--(Wffi
oa*,trto2,.w
FLYWHEEL COVER
IM/T)
DRIVE PLATECOVER (AiT)
11 x 1.5 mm76 N.m (7.9 kgf'm, 56 lbf'ft)
Apply engine oil to the bolt
threads.NOTE: After torqurngeach cap, turn crankshaft
to check for binding.
MAIN EEARING CAP
MAIN BEARINGSSelection, page 7_10
NOTE: New main bearings musl
be selected bY matching crank
and block identification markrngs
CRANKSHAFTInstallation, Page 7'23
OIL JET BOLT16 N.m 11.6 kgf'm, 12 lbl'ft)
OIL JETInspection, Page 8_10
Check for cracks
6x1.0mm11 N.m {1.1 kgf'm, I lbf'ft}
CRANKSHAFT OIL SEAL
Installation,pagesl 22 andl 29
Replace-
DOWEL PINOIL PUMPOverhaul, page 8-'l1Removal/lnspection,page 8-13.Apply liquid gasket
to mating surlace.RIGHT SIDE COVERApply liquid gasket
to mating surface.
THRUST WASHERS8 x 1.25 mm24 N.m {2.4 kgf.m, 17 lbf'ft)Grooved sides face outward
NOTE: Thrusr washer thickness
is tixed and must not be changed
by grinding or shimming
O-RINGReplace
CRANKSHAFT SEAL11 N.m {1.1 kgf'm, lnstallation, pages 7'29 and I 14
a lbt.ltl Heplace. (cont'd)
d#*

lllustrated Index
(cont'dl
I Luoricate att internal parts with engine oil during reassembly.
NOTE:
' Apply liquid gasket to the mating surfaces ofthe rightside coverand oil pumpcase before installingthem.. Use liquid gasket, part No. 08718 - 0001 or 087,18 _ OOO3.. Clean the oil pan gasket mating surfaces before installing it.
D16Y7 engine:6 x 1.0 mm12 N.m (1.2 kgt.m.8.7 tbf.tr)DRAIN BOLT44 N.m {4.5 kgt.m.33 tbt.ttl
,(
I
I
OIL PAN GASKETFLYWHEEL COVERIM/T)6x 1.0 mm12 N.m ('l .2 kgt.m, 8.7 tbt.trl
OIL PANRefer to page 7-27
Apply liquid gasker tothese points.
Replace.
WASHERReplace.12 x '1.0 mm118 N.m{12.0 kgt.m, 87 tbf.tr}
11 x 1.5 mm51 N.m15.2 kgl.m,38lbtftl
Apply engine oilto the boltthreads.NOTE: After torquingeach cap, turn the crankshaftto check for binding.
MAIN BEARINGSSelection, page 7-10
MAIN BEARING CAP
CRANKSHAFTInstallation, page 7 23
NOTE: New main bearings mustbe selected by matching crankand block identification markings.
6 r 1.0 mm11 N.m {1.1
6 x 1.0 mm11 N.m 11.1
ksI.m, 8 lbt.ft)
OIL SCREEN
kgt.m, 8 lbf.trl
Check for cracks.
CRANKSHAFT OIL SEALInstallation,pages 1 22 a^d 7-29
\:eprace'
GASKETReplace.
6 x 1.O mm11 N.m {1.1 kgt.m,8 rbt.frl
RIGHT SIDE COVERApply liquid gasker1o matrng surface,
OIL PUMPOverhaul, page 8-12Bemoval/lnspection,page 8-13
DOWEL PIN
WASHERSGrooved sides face outward.NOTE: Thrust washer thicknessis fixed and must not be changedby grinding or shimming.
CRANKSHAFT SEAL
l.j"Ji:l"^ pages z.2e --.S)
Replace.
6 x 1.0 mm11 N.m {1.18 tbt.fr)
7-4
BREATHING PORT COVERMOUNT BOLTS6 x 1.0 mm11 N.m {1.1 kgt.m, 8 tbf.fr}Apply liquid gasker tothe boh threads.
DOWEL PIN

D16Y5, D16Y8 engines:
DRAIN BOLT39 N.m 14.0 kgt'm,
Apply liquid gasket to
these points.
OIL PANRefer to page 7-25
when installing.WASHERReplace.
29 lbl.tt)
\
\^
6 x 1.0 mm q%
P
I
FLYWHEEL COVER(M/T}
12 x 1.0 mm118 N.m(12.0 kgt.m, 87 lbt'ft)
FLYWHEEL (M/TI
t2 N.m 11.2 kgf'm,
8.7 lbl.ftl
11 x 1.5 mm
51 N.m(5.2 kgf'm, 38 lbf ftl
Apply engine oiltothe bolt
threads.NOTE: Aftertorquingeach cap, turn crankshaft
to check for binding.
MAINBEARING
MAIN BEARINGSSelection, page 7-10NOTE: New main bearings must
be selected by matching crank
"nJ lr."i io"irriti"",ion-markings. --------*-i6{\
CRANKSHAFTInstallation, page 7-23
6 r 1.0 mm11 N.m (1 1 kgf'm, I lbf'ttl
OII PAN GASKETReplace.
DRIVE PLATE COVER
{A/T or CVT)
12 r 1.0 mm
74 N.m
17.5 kgl.m, 54 lbf'ft)
DBIVE PLATE {A/T or CVTI
Check for cracks
6 x 1.O mm11 N.m {1.1 kgl'm,
8 tbl.ftl
CRANKSHAFT OIL SEAL
lnstallation,pages 7'?1 and '1 '28
Replace.
RIGHT SIDE COVER
Apply liquid gasket
to mating surface.
OIL SCREEN
GASKETReplace.
OIL PUMPOverhaul, page 8_12Removal/lnspection,page 8-13Apply liquid gasket
to mating surface.
DOWEL PIN
WASHEFS
Grooved sides tace outward
NOTE: Thrust washer thickness
is fixed and must not be changed
bV grinding or shimming.
CRANKSHAFT SEALInstallation, pages 7 29
and 8-14Replace.
BREATHING PORT COVER
MOUNT BOLTS6 x 1.O mm11 f{..n (1.1 kgf'm, 8 lbf'fl)
Apply liquid gasket to
the bolt threads.
O.RINGReplace.
6 x 1.0 mm
11 N.m (1 1 kgl'm,
8 tbr.ftl
(cont'd)
7-5
\
OOWEL PIN