1999 HONDA CIVIC Valve spring

D16Y5 engine:
I x 1.25 mm20 N.m (2,0 kgf m, 14 lbf ft)
Apply engine oilto the
threads.ROCKEB ARMASSEMBLYFemoval, page 6-30
Inspection, Page 6-34
6x1.0mm12 N.m 11.2 kgf m, 8.7 lbf'ftl
Apply engine oilto the
threads.
VALVE KCEPERS
SPRING RETAINER
CAMSHAFTInspection, page 6-36
6x1.0mm12 N,m 11.28.7 tbf.ft)
WEC SOLENOIDVALVEBINTAKE VALVESPRING
INTAKE VALVE SEAL
Replace.
VALVE SPRINGSEAT
INTAKE VALVEGUIDE
CAMSHAFTPUL|'IY
VTEC SOLENOIDVALVE FILTERReplace.
OIL CONTROLORIFICEClean.
VALVE
SPRING RETAINEB
EXHAUST V
SPRING
VE
EXHAUST VALVE
SEALt"o'""".uoau,
SEATReplace.
GUIDEInspection, page 6-39Replacement, Page 6-41
Reaming, page 6-43EXHAUSTVALVEOIL SEALReplace.
HEAD
8 x 1.25 mm
37 N.m 13.8 kgf.m,
27 tbf.frlApply engine oiltothe lhreads.
(cont'd)
6-25
INTAKE VALVERemoval, page 6 38
Installalion, Page 6 43Removal, page 6-27Warpage, Page 6 40
Valve seat reconditioning'page 6-40lnstallation, page 6_45

Cylinder Head
lllustrated Index (cont'dl
VALVE KEEPERS
SPRING RETAINER
INTAKE VALVE
VTEC SOLENOIDVALVE FILTEBReplace.
OIL CONTROLORIFICEClean.
INTAKE VALVE SEALReplace.VALVE SPRINGSEAT
INTAKE VAI.VEGUIOE
CAMSHAFTPULLEY
I
I
VALVE KEEPERS
SPRING RET
EXHAUST VALVESPRING
@
EXHAUST VALVESEALReplace.
8 x 1.25 mm37 N.m 13.8 kgt m,27 tbfitlApply engine oiltothe threads.
EXHAUSTVALVE
-vp
e,.io"o reassembring, crean at the parts in sorvent, dry them and appry rubricant to any contact parts.
D16Y8 engine:
LOST MOTIONASSEMgLY
ROCKER ARMASSEMBLYRemoval, page 6 30Inspection, page 6-34
5xl.0mm12 N.m {1.28.7 tbf.ft)
VALVE SPRINGSEATEXHAUSTVALVE O.RINGGUIDE Replace.Inspection, page 6 39Replacement, page 6 41Reaming, page 6 43
LOST MOTIONASSEMBLYHOLDER
INTAKE VALVEBemoval, page 6 38Installation, page 6 43
20 N.m 12.0 kgl.m, 14 tbf.ft)Apply engine oit to thethreads.
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s9illl
CAMSHAFTInspection, page 6-36
OIL SEALBeplace.
CYLINDER HEADRemoval, page 6 27Warpage, page 6-40Valve seat reconditioning,page 6 40Installation, page 6-45
6x1.0mm12 N.m (1.2 kgt.m,8.7 lbf.ftlApply engine oil to thethreads,

Cylinder HeadRocker Arms
18.
19.
21.
22.
Removal (cont'd)
Remove the timing belt {see page 6-19).
Remove the camshaft pulley and back cover,
CAMSHAFTPULLEYClean when installing.
6x1.0mm8 x 1.25 mm37 N.m (3.8 kgf.m,21 tbtlrlApply engine oilto thebolt threads.
Remove the exhaust manifold {see pages 9-6 and 9_7).
Remove the intake manifold (see pages 9-2 thru 4).
Remove the cylinder head bolts, then remove thecylinder head.
CAUTION: To pr€vent warpage, unsclew lhe bohsin sequonce 1/3 turn at a time; rgpeat tho sequenceuntil all bolts are loosened.
CYLINDER HEAD BOLTS LOOSENING SEOUENGE:
6-30
Removal
1. Loosen the adjusting screws.
2. Unscrew the camshaft holder bolts, then,removethe rocker arm assembly.
NOTE:
a Unscrew the camshaft holder bolts two turns at at,me, in a crisscross pattern, to prevent damao_ing the valves or rocker arm assembly.. When removing the rocker arm assembly, do notremove the camshaft holder bolts. The bolts willkeep the camshaft holders, the springs and therocker arms on the shaft.
CAMSHAFT HOLDER BOLTS LOOSENINGSEOUENCE:
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ADJUSTING SCREWS

Valves, Valve Springs and Valve Seals
Removal
NOTE: ldentify valves and valve springs as they areremoved so that each item can be reinstalled in its orioi-nal oosition.
'1. Using an appropriate-sized socket and plastic mal-let. lightly tap the valve retainer to loosen the valve
keepers before installing the valve spring compres-
sor.
Install the spring compressor. Compress the spring
and remove the valve keeper.
PLASTIC MALLET
SOCKET
VALVE SPRII{G COMPRESSORSnlp-on CF711 or KD-383whh #32 JAWS
6-38
L
(
3. Install the valve guide seal remover.
SEAL REMOVER vat vF GI nF !
4. Remove the valve seal.
I
VALVE GUIDE SEAL REMOVERLISLE P/N 57900 or KD3350

Valves
Reaming
NOTE: For new valve guides only.
1. Coat both the reamer and valve guide with cufting
orl.
2. Rotate the reamer clockwise the full length of the
valve guide bore.
3. Continue to rotate the reamer clockwise while
removing it from the bore.
4. Thoroughly wash the guide in detergent and water
to remove any cutting residue.
5. Check the clearance with a valve (see page 6-391.
Verify that the valve slides in the valve guide with-
out exerting Pressure.
Turn reamer inclockwise direclionon ly.
REAMER, 5.5 mmO7HAH. PJ'O'IOB
I
REAMER
oa)o,
o
o
1.
lnstallation
Coat valve stems with engine oil. Insert the valves
in the valve guides.
NOTE: Make sure lhe valves move up and clown
smoothly.
lnstallthe spring seats on the cylinder head.
Install the valve seals using the valve guide seal
installer.
NOTE: Exhaust and intake valve seals are not inter-
changeable.
2.
3.
WHITESPRINGBLACKSPRING
INTAKE VALVE SEALEXHAUST VALVE SEAL
VALVE GUIDE SEALINSTALLERKD2899 (Commercially available)NOTE: Use small lD end of
P
(cont'd)
6-43

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

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

Special Tools
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Ref. No. I Tool NumberDescriptionOty Page Relerence
q oTHAH PJ7010B
g I 07JAA-001020A
g I 07JAB-0010204
I 07JAB - 0010404
g 07LAJ - PR3020A
|6) 07MAA - PR70100
g I ozvu,r - enu orzo
g 07MAF - PR9010A
g 07742 - 0010100(!D I 07757-PJ10104
Valve Guide Reamer,5.5 mm
Socket, 19 mm
Holder Handle
Pulley Holder Attachment. 50 mm
Air Stopper
Tappet Adjuster
Tappet Locknut Wrench
Valve Spring Compressor Attachment ExtensionValve Guide Driver, 5.5 mm
Valve Spring Compressor Attachment
1 I 6-81
1 659
1 6-59
1 ] 6-5s
1 I 6-55
1 6-57
1 6-57
1 J 6-77
1 6-80, 81
1 6-71
ta;
aL)'n
-=<-,,LE;;
(D
a
6-50
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