1999 HONDA CIVIC Valve spring

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

Valves, Valve Springs and Valve Seals
Removal
NOTE: ldentify valves and valve springs as they are
removed so that each item can be reinstalled in its origi-
nal Dosition.
l. Using an appropriate-sized socket and plastic mal-
let, lightly tap the valve retainer to loosen the valve
keeoers.
PLASTIC
Install the valve spring compressor. Compress the
spring and remove the vSlve keepers.
VALVE SPRINGCOMPRESSORATTACHMENT07757 - PJ1010A
VALVE SPRINGCOMPRESSOR ATTACHMENTEXTENSIONOTMAF - PRgOIOA
I
Sn.p-on CFr1lCOMPRESSOR
6-77
3. Installthe valve guide seal remover.
VALVE GUIDE SEAL REMOVERCOMMERCIALLY AVAILABLELtst-E P/N 571100 ()R KD3350
4. Remove the valve guide seal.
Valve Dimensions
lntake Valvo
A Standsrd {Newl; 32.90 - 33.10 mm (1.295 - 1.303 in}
B St ndard {New}: 101.00 - 101.30 mm (3.976 - 3'988 in}
C Stsndard (Nowl: 5./t5 - 5.,185 mm (0.2156 - 0.2159 in)
C Servico Limit 5.445 {0.21/l| in)
D Siandard (N!w): 1.05 - 1.35 mm (0.041 - O.05il inl
D S€.vice Limit: 0.85 mm {0.033 inl
Exhaust Valve
A Standard lNewli 27.90 - 28.10 mm (1.098 - 1.106 in)
B Stlndard {Nowl: 100.m - 1qr,90 mm {3.961 - 3.972 in)
C Stsndard {Now}: 5.450 - 5.,[60 mm {0.21,16 - 0.2150 in)
C Service Limit 5.420 10.213,0 inl
D Standard {New): 1.65 - 1.95 mm (0.065 - 0.077 in)
D Sorvico Limit: l.ils mm 10.057 inl

Valves
1.
Installation
Coat the valve stems with oil. lnsert the valves into
the valve guides.
NOTE: Check that the valves move up and downsmoothly.
Installthe spring seats on the cylinder head.
Install the valve seals using the special tool.
NOTE: Exhaust and intake valve seals are not inter-
changeable.
WHITESPRING
VALVE GUIDE SEAL INSTALLERKD-28)g (Commercially available)NOTE: Use small lDend of tool,
2.
BRACKSPRING
VALVE SEALReplace.
tNsTALLERVALVE GUIDE SEALKD-2899NOTE: Use small lDend of tool
(
4. lnstall the valve spring and valve retainer, theninstall the valve spring compressor. Compress thespring, and install the valve keepers.
NOTE: Place the end of the valve spring with closely
wound coils toward the cylinder head.
VALVE SpRtNG VALVE SPRTNG
COMpRESSOR COMPRESSORATTACHMENT
ATTACHMENT EXTENSTON
0775? _ pJlOl0A o?MAF - PR9010A
VALVE SPRING COMPRESSORlCommercially available)Snap-on CF711 or KD-3tXlwith #32JAWSLightly tap the end of each valve stem two or threetimes with the wooden handle of a hammer to ensureproper seating of the valve and valve keepers.
NOTE: Tap the valve stem only along its axis soyou do not bend the stem.
I
5.

Oil Pump
Overhaul
NOTE:
. Use new O rings when reassembllng.
. Apply oil to O-rings before installation.
. Use liquid gasket, Part No. 08718 - 0001 or 08718 - 0003
. The rotors must be installed to the same direction in order'
o After reassembly, check that the rolors move without binding'
B15A2 engine:
6x1.0mm7 N.m (0.7 kgf m, 5 lbf ft)
OUTER ROTORInspection, page 8-13
INNER ROTORpage 8-13
OOWELPIN
O-RINGReplace.
6x1.0mm11 N.m (1.1
8 tbtfrlkgf.m,
PUMP HOUSINGInspection, page 8-13
Apply liquid gasket
to the mating surface of
the cylinder blockwhen installing.
8 x 1.25 mm24 N,m {2.i1 kgl.m.
17 tbf.ft)RELIEF VALVEValve mlst slide freeiy
in housing bore.Replace if scored.OIL SEALReplace.lnstallation,page 8-14
SEALING BOLT39 N.m l4O kgt'm,29 tbt frl
\(cont'd)
SPRING
8-11

Emission Control System
Positive Crankcase Ventilation IPCVI System
Descripiion
The Positive Crankcase Ventilation (PCV) system is
designed to prevent blow-by gas from escaping to the
atmosphere. The PCV valve contains a spring-loaded
plunger. When the engine starts, the plunger in the PCV
valve is lifted in proportion to intake manifold vacuum
and the blow-by gas is drawn directly into the intake
manifold.
D15Y5, D16Y8, 816A2 ongins:
BREATHERHOSE
Dl6'|11 6ngin6:
-: aLOW-BY VAPOR-: FnESH AIF
11-266
tJ
lrcpection
1. Check the PCV hoses and connections for leaks and
clogging.
2. At idle, make sure there is a clicking sound from the
PCV valve when the hose between the PCV valve
and the intake manifold is lightly pinched with your
fingers or pliers,
D16Y5, D16Y8 ongins:
BREATHERHOSE
PCV VALVE
Gently pinch here.
Bl6A2 engins:VALVE
lf there is no clicking sound, check the PCV valve
grommet for cracks and damage. If the grommet is
OK, replace the PCV valve and recheck.
PCV

Description
Hydraulic Control (cont'dl
Regulator Valve
The regulator valve maintains a constant hydraulic pressure from the ATF pump to the hydraulic control system, whitealso furnishing fluid to the lubricating system and torque converter. The fluid from the ATF pump flows through B and 8,.The regulator valve has a valve orifice. The fluid entering from B flows through the orifice to the A cavity. This pressure ofthe A cavity pushes the regulator valve to the right side, and this movement of the regulator valve uncovers the fluid portto the torque converter and the relief valve. The fluid flows out to the torque converter, and the relief valve and regulatorvalve moves to the left side. According to the level of the hydraulic pressure through B, the position of the regutator vatvechanges and the amount of the fluid from B' through D and c also changes. This operation is continued. maantaining theline pressure,
NOTE: When used. "|eft" or "right" indicates direction on the illustration betow.
ENGINE NOT RUNNING
TOROUE CONVERTER
ENGINE RUNNING
To TOROUE CONVERTER Lubrication
Stator Roaction Hydraulic Prossur6 Control
Hydraulic pressure increases according to torque, are performed by the regulator valve using the stator torque reaction.The stator shaft is splined with the stator in the torque converter, and its arm end contacts the regulator sprang cap. whenthe vehicle is accelerating or climbing (Torque Convert€r Range), the stator torque reaction acts on the stator shaft, andthe stator arm pushes the regulator spring cap in the direction of the arrow in proponion to the reaction. Jne stator reac-tion spring compresses, and th€ reoulator valve moves to increase the line pressure which is regulated by the regulatorvalve. The line pressure reaches its maximum when the stator torque reaction reaches its maximum.
STATOR SHAFT ARM
REGULATOR VALVE
14-22
STATORATOR SHAFT ARM
SPRING CAP

Description
Hydraulic Flow lcont'dl
4th Goar {E Position}
As the speed of the vehicle reaches the prescribed value, shift controlsolenoid valve A is turned OFF bymeans ofthePCM Shift control solenoid valve B remains oFF. The modulator pressure (6) flows to the left end of the t-2 shiftvalve and the left end of the 3-4 shift valve. The modulator pressure (64) in the left end of the 1-2 shift valve equalsthe modulator pressure {68) in the right end of the 1-2 shift valve, the 1-2 shift valve remains at left side by the ten-sion of the valve spring.
The 3-4 shift valve is moved to the right side by the modulator pressure (64). The 3_4 shift valve covers the port to the3rd clutch and uncovers the port to the 4th clutch as this valve is moved to the right side. The 4th clutch pressure (4.1)from the 3-4 shift valve becomes the 4th clutch pressure (40) at the manual valve. The 4th clutch pressure (401 isapplied to the 4th clutch, and the 4th clutch is engaged.
Fluid flows by way of:- Line pressure (4) * CPB Valve - Line Pressure (5) + 1-2 Shift Valve - Line pressure (5) * 2-3 Shift Valve- Line Pressure (5) - 3-4 Shift Valve - 4th Clutch pressure (41) + Manual Valve _ 4th Clutch pressure (40)* 4th Clutch
The hydraulic pressure also flows to the lst clutch. However, no power is transmitted because of the one-way crutchas in 2nd and 3rd gear.
NOTE: When used, "|eft" or "right,, indicates direction on the hydraulic circuit.
\
14-30

I
TOROUE CONVERTER
No Lock-up
. Lock-up Control Solenoid Valve A: OFF
. Lock-up Control Solenoid Valve B: OFF
. Linear Solenoid Pressure: High
The pressurized fluid regulated by the modulator works
on both ends of the lock-up shift valve. Under this condi-
tion, the pressures working on both ends of the lock-up
shift valve are equal, the lock-up shift valve is moved to
the right side by the tension of the valve spring alone.
The fluid from the ATF pump will flow through the left
side of the lock-up clutch to the torque convener; that is,
the lock-up clutch is in OFF condition.
NOTE: When used, "left" or "right" indicates direction
on the hydraulic circuit.
MOOULATOR PRESSURE
LINEAR SOLENOIO PRESSURE
(cont'd)
LOCK.UP CONTROLSOLENOID VALVE
RELIEF VALVE
LOCK-UP TIMINGVALVE
9 L ] I COOLER RELIEF VALVE
ATF PUMP
14-35