7-1 HONDA CIVIC 1999 6.G Owner's Manual

Ref. No I Tool NumberDescriptionOty I Pag€ Reterence
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07GAF - PH70100
07GAG - SD4010A or
07GAG - SD40100
07GAG - SD4020A or
07GAG - S040200*07JGG - 00r 010A
07MAC - 5100200
OTNAD - SR3O2OA
07NAG - SR3090A or
07NAG - SR30900
07RAK - 5040110
07RAK - 5040121 or
07RAK - 5040t20
07406 - 0010004 or
07406 - 001000r
07725 - 0030000
07746 - 0010100
07746 - 0020100
07746 - 0030300
07749 - 0010000
07916 - SA50001
07965 - SA50500
07974 - SA5020A or
07974 - SA50200
07974 - SA50800
Pilot Collar
Piston Seal Ring Guide
Piston Seal Ring Sizing Tool
Belt Tension Gauge
Ball Joint Remover, 28 mm
Cylinder End Seal Bemover Attachment
Piston Seal Ring Sizing Tool
P/S Joint Adaptor (Pump)
P/S Joint Adaptor (Hose)
P/S Pressure Gauge
Universal Holder
Attachment,32 x 35 mm
Driver, 22 mm l.D.
Attachment, 30 mm l.D.
Driver
Locknut Wrench, 40 mm
Front Hub DiVAssembly Tool
Sleeve Seal Ring Sizing Tool
Bsll Joint Boot Clip Guide
1
1
'I
1'I
1
I
1
1
I
1
1
I
1
1
I
1
I
11-54
17-59
'17-59
17 -32
17 -6, 47
17-51
| /-ao
17 -34
17 -31
't7 -34
't7-42, 16
17-57,58
17-10
17-44't7 -57
17-5,33
17-68
17 -57
17-57, 6A* lncluded in the Belt Tension cauge Set, 07TGG - OO10OOA.
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17-2

Steering Gearbox
Reassembly (cont'dl
LApply a thin coat of grease to the inside surface of
the rack end bushing.
Grease quantity: 1 - 3 S 10.04-0.1 ozl
CAUTION: Do not till the slots with greas€; th€y
must remain open to serve as air passages,
Install the rack end bushing by aligning the round
projection on the bushing with the hole in the cylin-
der housing
4.
Grease the steering rack teeth.
Install the steering rack into the cylinder housing
carefully to avoid damaging the rack end bushing.
CYLINDER HOUSING
17-10
11. Adjust the rack guide screw (see page 17-5).
Drive in the steering pinion in the gear housing with
the soecial tools.
ORIVER.22 mm l.D.o7716-qr20100SNAP RING, 35 mm
PINION DUSTSEALReplace.
Vinyltape
STEERINGPINION
7.
Install the 35 mm snap ring securely in the gear
housing groove.
Apply vinyl tape to the pinion shaft, then coat the
vinyltape with grease.
Install the pinion dust seal on the gear housing until
it seats properly, then remove the tape.
Grease the sliding surface of the rack guide, and
install it on to the gear housing.
Install the spring, disc washer and rack guide screw
on the gear housing.
NOTE: Install the disc washer with its convex side
facing in.
LOCKNUT
SPRING RACK GUTDE
RACK GUIOE SCREW
10.
Dtsc w,
a(-\
l1 *l
\, ,/
\

It
12.
13.
lnstall the new lock washer in the groove in the
steering rack.
Installthe steering rack end into the rack
LOCK WASHER RACK END 54 N m ts.s kgf'm, 40 lbtft)
Replace.
TAB
(l*v
14.
15.
RACK END
Hold the steering rack with a wrench and tighten
the rack end with another.
CAUTION: Be careful not to damage the tack sur-
fac€ with the wrench.
After tightening the rack ends, stake the four sec-
tions of the lock washer with a roll pin drift and a
mallet.
. Place the wood block on the press table. then set
the lock washer section of the rack end on the
wood block securelY.
. Be sure the tool is aligned with the flat sections
of the steering rack end before pressing
. Stake the lock washer in the center of the flat
section of the steering rack end.
ROLL PIN DnlFTl(Commorci.lly .Yril.blolSnap-On No. PPRS or oquival.nt
NOTE: This drift has a flat
tip, to prevent puncturing
of metal washer.
srEEatruG nlCr/rl,WOODEN BLOCK
TIE.ROO CLIP
16. Apply grease around the outside ot the rack end
housing.
Apply a light coat of silicone grease to the boot
grooves on the rack ends.
lnstall the boots in the rack end with the tie-rod
clips.
NOTE: Install the boot band with the rack in the
straight ahead position (right and left tie-rods are
equal in length).
=-..r=-q!q!!.n
SILICONE GREASE
17.
(cont'd)
17-11
NOTE| WiPe grease off
the thread sectlon

Steering Gearbox
Reassembly (cont'd)
21.
'19.
20.
Install the boot band so that the locking tabs of the
band (stake points) are in the range shown below.
{Tabs should face up and slightly forwaro.,
Bend both sets of locking tabs.
Lightly tap on the doubled-over portions to reduce
their height.
CAUTION: Stake the band locking tabs firmly.
22. Slide the rack right and left to be certain that the
boots are not detormed or twisted.
Stake points
+ Fronr
Lett Boot Band(Viewed from the left side)Right Boot Bend(Viewed from the right side)
17-12

Steering Gearbox
Installation (cont'dl
Center the cable reel by first rotating it clockwise
until it stops. Then rotate it counterclockwise(approximately two turns) until the arrow mark on
the label points straight up. Reinstall the steering
wheel (see page 17-35).
Install the steering joint cov€r with the clamps and
clrps.
7.
STEERING JOINI COVER
17-14
9. Reconnsct the ti€-rod ends to the steering knuckles,
thon tightsn th€ castle nut ('96 -'97 models) or nut('98 -'00 models) to the specified torque, and install
new cotter pins.
NOTE: Before connecting the tie-rod ends, wipe off
any grease contamination from the ball joint
tapered section and threads.
CAUTION: Torque lhe ct3tle nut to thr lowsr torque
spocification, th€n tighton it only tar anough to
align the 3lot with tho pin hob. Do not align the
nut by loosening ('96 - '97 modcls onlyl.
TIE.ROD
COTTER PINSR6plac6.On rgassombly, b6nd
'96 - 37 model3:
cotter prn as shown.'98 - '00 modol3:
NUT4a N.m(4.5 kgf.m,33 lbr.ftl
CAST1T NUT,O - ilt N'm{4,0 - 4.8 kgf.m.29 - 35 tbtftl
10.Installthe exhaust pipe A or TWC (see section 9).
Connect the shift linkage (see section 13 or section
14).
Install the front wheels.
After installation, perform the following checks.
. Adjust the front toe (see section 18).. Check the steering wheel spoke angle. Adjust by
turning the right and left tie-rods, if necessary.
NOTE: Turn the right and left tie-rods equally.
ll.

Component Locations
I
lndex
Power Steering:
NOTE:
. li an intact airbag assembly has been removed trom a scrapped vehicle or has been found defective or damaged dur-
ing transit. storage or service, it should be deployed (see section 24).
. Before removing the gearbox, remove the driver's airbag assembly and steering wheel.
. After installing the gearbox, checkthewheel alignmentand adjust if necessary.
SRS components are located in this area. Review the SRS component locations. precautions, and procedures in the SRS
section {24} before performing repairs or service.
STEERING WHEELRemoval/lnstallation, page 17-35
Disassembly/Feassembly, page 17-36
DRIVER'S AIRBAG ASSEMBLYRemoval/lnstallation, see section 24
STEERING GEAREOXRack Guide Adiustment, page 17'33
/
Removal, page 17 47Disassembly, page 17-49Reassembly, page 17-55Installation, page 17-65VALVE EODY UNITOverhaul, page 17 52
COLUMNFemoval/lnstallation, page 17-37Inspection, page 17-38CASLE REELRemoval/lnstallation, see section 24
IGNITION SWITCHSee section 23
POWEF STEERING PUMPPump Belt Inspection, page 11-32Pump Belt Adiustmenl, page 11'32Pump Pressure Check, page 17 34Removal/lnstallation, page 17'40Disassembly/Reassembly, page 17-41
TIE.ROD END BALL JOINTBallJoint Boot Replacement, page 17-68
1,,
17-15

System Description
Fluid Flow Diagram
The system is a compact rotary-valve-type power steering, connected to the steering gearbox. The fluid pressure is pro-
vided by a vane-type pump which is driven by the engine crank pulley. The amount of fluid and pressure is regulated by
the flow control valve built into the pump. The fluid pressure from the pump is delivered to the valve body unit around the
pinion of the steering gearbox. The valve inside the valve body unit controls the hydraulic pressure and changes the direc-
tion of the flow. The fluid then flows to the power cylinder. where rack thrust is generated. Fluid returning from the power
cylinder flows back to the reservoir, where the fluid is "filtered" and supplied to the pump again.
RESERVOIR
VALVE BOOY UNIT
SUB.VALVE
FLOW CONTROL VALVESTEERING GEARBOX
17-16

System Description
Steering Pump (cont'dl
The flow control valve and sub-valve in the pump per-
forms the following steps @ through @ to control the
flow of fluid, that is to increase the discharge volume
when engine speed is low, and to decrease it when the
engine speed increases. The assistance thrust of the
steering gearbox changes in compliance with the
change in the discharge volume.
When the engine starts, fluid discharged from the
discharge port starts to flow through oil passage A,
the fixed orifice and the variable orifice to the steer-
ing gearbox. When the engine speed is extremely
low, the return port is closed by the flow control
Fluid pressure discharged from the discharge port
is applied to the top of the sub-valve, and the fluid
pressure that passed through oil passage A is applied
to the bottom of the sub-valve. When this happens,
the pressure difference between the ends of oil pas-
sage A, which is caused by the resistance oil passage
A when the fluid flows through the passage. is
applied to the sub-valve, However, the pressure dif-
ference applied to the sub-valve. that is the force
that pushes the sub-valve down, is too small to
overcome the spring force, and the variable orifice is
fully open when the engine speed is extremely low.
Because the fluid volume flowing through the fixed
orifice and variable orifice increases, a pressure dif-
terence is created between the ends of these ori-
fices, and it increases in proportion to the engine
speed. As the fluid pressure that passed the fixed
orifice and variable orifice is directed to the bottom
of the flow control valve. a pressure difference is
created between the top and bottom of the valve,
which pushes down the flow control valve and
opens the return port. As a result, pan of the fluid
discharged from the discharge port feturns to the
pump suction port, keeping the discharge volume
constant.
In this condition, the sub-valve does not move. and
the variable orifice stays fully open.
lo
trrtrrlo3
J
o
PUMP R.P.M.
To STEERING GEARBOXSUB.VALVE
To STEEnING GEARBOX
FLOW CURVE
!rs+/f/ffih\
o,,-i^"l^tKzYt)91y ul3Yl
FLOW CONTNOL VALVE
su8-vALvE
ORIFICE
ToP
17-18
FLOW CONTROL VALVE

t
To STEERING GEARBOX
To STEERING GEAREOx
@ The fluid volume that flows thorough oil passage A
and the pressure djfference applied to the sub-valve
increase in proportion to the engine speed. The
sub-valve lowers overcoming the spring force, and
it stans to close the variable orifice to regulate the
discharge volume, When this happens, the fluid vol-
ume flowing to the steering gearbox decreases as
the engine speed increases. At the same time, the
flow control valve continues to control the fluid vol-
ume to the return Port,
@ As the engine speed increases funher, the pressure
difference at the sub-valve increases further as well.
The sub-valve then closes the variable orifice com-
pletely, regulating the discharge volume further.
When this happens, the fluid volume discharged
from the pump to the steering gearbox is regulated
and maintained at a given level until the engine
speed reaches the high speed range The flow con-
trol valve functions continues to control the fluid
volume to the return Port.
Pressure Relief
Pressure at the discharge side of the fixed orifice is
directed to the bottom of the flow control valve. When
the pressure builds up, the relief valve in the flow con-
trol valve opens to release the pressure at the bottom of
the valve. This allows the flow control valve to be
pushed back by the pressure difference, and the fluid
volume to the pump return port increases.
As explained above. the system keeps the pump dis-
charge pressure (relief pressure) from exceeding the
given level by controlling the volume of the fluid to the
pump relurn pon,
1.,DAMPING ORIFICE{Docreases excessiv€vibration in the valv6.)
17-19
)
RELIEF VALVE {Opan)
SUB.VALVE
FLOW CONTROL VALVE
/F ft>..\
'-€/K\A/A
o'.'to"5lo'#2"n af11\D7
FLOW CONTROL VALVE

Troubleshooting
Diagnostic Trouble Code (DTC) Chart -'98 - 00 Models {cont'dl
NOTE:* 1: In case of an intermittent failure DTC 9-1, it means there was an internal failure of the SRS unit or a faulty SRS indica-
tor light circuit. Do the troubleshooting for intermittent failures (page 24-'15).*2: In case of an intermittent failure DTC 9-2, it means there was an internal failure of the power supply {VB line). Do the
troubleshooting for intermiftent failures.*3: DTC cannot be read with a Honda PGM Tester; check by jumping the SCS service connector.
24-20
\
SRS indicator lightDTCPossible causeCorrectiYe actionSee page
comes on
5-1lnternal failure of the SRS unitSRS unit
replacemenl24-765-4
6-1
lnternal failure of the SRS unitSRS unit
replacement24-7 66-2
o-5
6-4
7-1
lnternal failure of the SRS unitSRS unit
replacement24-76
7-3
8-1lnternal failure of the SRS unitSRS unit
reptacement24-7 68-2
8-6Internal failure of the SRS unit or two failures
at a trmeTroubleshooting24-62
g_1*r *3lnternal failure of the SRS unitSRS unit
replacement24-7 6
9-2+2 *3lnternal failure of the SRS unit5l|5 Untr
replacement24-76
10-1SRS airbags deployed (SRS unit must be
reDlaced)
SRS unit
replacement24-76