1996 HONDA CIVIC Pump pressure check

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

Troubleshooting
General Troubleshooting
Check the following before you begin:. Has the suspension been modified in a way that would affect steering?. Are tire sizes, tire variety and air pressure correct?. lsthe steering wheel original equipment or equivalent?. lsthe powersteering pump belt properlyadiusted?
. ls steeringfluid reservoirfilledto proper level?. ls the engine idle speed correct and steady?
Hard Steering (Check the powor assist. se€ page 17-3o. lfthe torce is over 29 N (3.0 kgf, 6.6lbo, Procede with this troubleshootinq.)
Abnormallluid pressure
{fluid pressureis too high)
Faulty valve body unit
Relief pres-sure too low
Abnormal
Faulty llow control valve(Replace the pump es anassembly)
Ch€ck the feed snd return circuit lin€s ano nosebetw6€n the gearbox and pump for clogging andd€lormation.
Normal line and hose
Check the pump fluid pressure(soe page 17-34).l/easure steady-state tluid pres-s!re while idling with the bothvalves tully open.It should be 1.500 kPa (15 kgf/cmr,213 psi) or below.
Normal
Check th€ flow control vslve (see page 17-42).. Chock the valvo lor smooth movement in the hous-ing.. Check the reliefvalve for leaks.
Check the pump fluid pressure
{see page 17-34).Measure pump relief pressurewhile idling with the pressure con-trol valve Iully closed.It should be 6,400 - 7,400 kPa (65 -
75 kgflcm,,920 - 1,070 psi)
Normal relisf pressure
17-22
Go to page 17-23Faulty pump assembly

/
Uneven or rough steering
Steering wheel kicks back
during wide t!rns.
ll,
)
Adjust the rac* guide (see page 17-3).
lf the problem is not corrected bY
adjusting the rack guide, replace
the gearbox.
Adiust the belt tension. Feplace the
belt, il necessary (see Page 17 32).
lfthe engine stalls when the wheel
is turned while car is stopped or
moving at low speed, adjust the
idle spe€d (see section 11)
ldle speed low or erratic.
Check power sleering fluid level lf
the level is excessively low, check
lor leaks in the system. Add lluid
to the specified level.
Air in reservoir, or check Powersteering Iluid level.
lf ltuid level is OK, check O-rings
and seals on both ends of thepump inlet hose, and the P/Spump housing mating surfaces
and the pumP shaft oil seal for
suction leaks. RePlace Parts as
nocessary.
Adjust the belt tension (see Page17 32)or replace belt.Pump belt sliPPing on PLrlleY(pump stops momentarilY)
Check if pump press{rre is normal
and the gauge needle travel is 500
kPa (5 kgl/cm?, 7l Psi) or less.
Chock the flow control valve if the
needle travel exceeds 500 kPa (5
kgflcm', 71 Psi). l{ the flow control
valve is normal, replace the PumPas an assemoly.
Install the power steering pressure
gauge, Close the Pressure contrcl
valve fully and m6ssure the PumPpressure {s€e page 17-34}.
17 -25,

Troubleshooting
Noise and Vibration
NOTE; Pump noise in first 2 - 3 minutes after starting in cold weather is normal.
Humming
Rattle or chattering
Humming due to pulsation of fluid is normal, particularlv when the wheel isturned with the vehicle stooDed.
lf equipped with automatic trans-mission, the hum could be thetorque conveater or pump noise.
Confirm by temporarily removingthe pump belt.
High-pressure line touching theframe.Reposition the line.
Loose steering shaft connector,tie-rod. or balljoint.Check and tighten, or replacepaats as necessary.
Column shaft wobbling.Replace the column assembly.
Check the rack guide tor properadjustment (see page 17,33).Adiusi, if necess€ry.
Rattling sound and feeling when turning the steering wheel raght and left with theengine OFF is normal.
Pump noise, though not loud. trom the valve body unit can be heard whon turn-ing the steering wheel right or left. This is normat.
CAUTION: When imp€sting, do not hold the steering wheet a[ the way tothe right or the left.
17-26

lnspection and Adjustment
Pump Pressure Check
Check the fluid pressure as follows to determine
whether the trouble is in the pump or gearbox.
NOTE: First check the power steering fluid level andpump belt tension.
CAUTION: Disconnect the high pr$sure hos€ with care
so as not lo spill the power sieering tluid on tha frame
and other parts.
1. Disconnect the outlet line from the Dumo outlet fit-
ting, then installthe P/S joint adaptor (pump) on the
Dumo outlet.
2. Connect the P/S joint adaptor (hose) to the power
steering pressure gauge, then connect the outlet
hose to the adaptor.
3. Install the power steering pressure gauge to the P/Sjoint adaptor (pump) as shown.
ourlEr HosE FnrNo ,t"ll lrilu"ott
P/S JOINT ADAPTOB IHOSEI07RAK - S0i10l2rol07RAK- 50{{)120
P/S PRESSURE GAUGE07406 - 001000Aor07406 - 0010001
4. Open the shut-off valve fully.
5. Open the pressure control valve fully.
17-34
(Pa.t of tooll11 N.m11.1 kgt m, 8 lbf.ftl
PRESSURECONTROL VALVE
SHUT.OFFVALVE
PUMP OUTLETFITTING
6 x 1.0 mm BOLTlPart of tool)11 N.m11.1 kgf m, 8 lbtftl
7.
Start the engine and let it idle.
Turn the steering wheel from lock-to-lock several
times to warm the fluid to operating temperature.
Measure steady-state fluid pressure while idling. If
the pump is in good condition, the gauge should
read less than 1500 kPa (15 kgf/cmr, 213 psi).
lf it reads high, check the outlet line or valve body
unit (see General Troubleshooting 17-22).
Close the pressure control valve, then close the
shut-off valve gradually until the pressure gauge
needle is stable. Read the oressure.
lmmediately open the pressure control valve fully.
GAUTION: Do not keep lhe prossure control valve
clos€d more then 5 soconds or the pump could be
damagod by over-heating.
lf the pump is in good condition, the gauge should
read at least 6,400 - 7,400 kPa (65 - 75 kgflcm,, 920 -
1,070 psi). A low reading means pump output is too
low for full assist. Repair or replace the pump,
9.
P/S PBESSURE GAUGE07{16 -@1@OA
oi
SI{UT.OFF VALVE

I
5, Submerge the valve in a container of power steer-
ing fluid or solvent. and blow in the hose. lf air bub-
bles leak through the valve at less than 98 kPa
(1.0 kgf/cm', 14.2 psi), repair it as follows.
, AIR PRESSURE
?
i-- POWER STEERTNGFLUID or SOLVENT
Hold the bottom end of the valve with a open end
wrench.
Unscrew the seat in the top end of the valve. and
remove any shims, the relief check ball. relief valve
and relief valve spring.
7.
l./
RELIEF CHECK BALL
1.,
SEAT9 N.m
{0.9 kgf'm, 6.5 lbt'ftl
RELIEF VALVESPRING
Clamp this end ina open end wrench,
8. Clean all the parts in solvent, dry them off, then
reassemble and retest the valve. lf the flow control
valve tests OK, reinstall it in the pump. lf the flow
control valve still leaks air, replace the pump as an
assembly. The flow control valve is not available
separatelY.
NOTE: 11 necessary, relief pressure is adjusted at
the factorv by adding shims under the check ball
seat. lf you found shims in your valve, be sure you
reinstall as many as You took out.
RELIEF VALVE
{W-*"'
FLOW CONTROL VALVE
17-43
Ball Bearing:
1. Inspect the ball bearing by rotating the outer race
slowly. lf any play or roughness is felt, replace the
ball bearing.
Remove and discard the ball bearing using a press
as snown.
Installthe new ball bearing using a press as shown.
Ball Boaring Rsplaccmont:
lnstallwith thered shielded sidefacing down.
NOTE: Support the inner race
with the tool securely.
BALL BEARING
Prcrt

I
Bleeding
CAUTION:
. Always use Genuine Honda DOT 3 Brake Fluid. Using 8
non-Honda brak€ fluid can cause corrosion and
docrea3e the life of the system.
. Make surs ||o dirt or other foteign matter is allowed
to contaminate the brake fluid,
. Do not spill brake lluid on the vehicle, it may damago
the paint; if brake lluid doos contac{ the paint, wash
it ofl imm€diately with water.
NOTE: The reservoir on the master cylinder must be at
the MAX (upper) level mark at the start of the bleeding
procedure and checked after bleeding each brake
caliper. Add fluid as required.
1. Make sure the brake fluid level in the reservoir is at
the MAX lupper) level line.
MAX {UPPER) LEVEL
CYLINDER
Have someone slowly pump the brake pedsl several
times, then apply steady Pressure.
Loosen the brake bleed screw to allow air to escape
from the system. Then tighten the bleed screw
securely.
Repeat the procedure for each wheel in the sequence
shown below until air bubbles no longer appear in
the fluid.
Refill the master cylinder reservoir to the MAX (up-
per) level line.
ELEEDING SEOUENCE:
O Front Right(D Bo.r Right
O Front LeftO Rear Left1,,
19-7
FRONTT
REAR lDrum Brakel:
REAR (Disc Brake):
AIEED SCREW9 N.m (0.9 ksf m, 6.5 lbf'ft)