Page 659 of 1681

Troubleshooting
General Troubleshooting
Check the following before you begin:
o Has the suspension been modified in a way that would affect steering?
. Are tire sizes and air pressure correct?
. lsthe steering wheel original equipment or equivalent?
. ls the power steering pump belt properly adiusted?
. ls steering fluid reservoirtilled to proper level?
. ls the engine idle speed correct and steadyT
Hard steering (check the power assist, see page 17-18. It the torce is over 34 N (3.5 kgf, 7 7 lbf), proceed with this troubl*hooting l
Abnormalfluidpressur€ (lluid
pressure rs roohish)
Too low reliefpress{ire
Normal line and hos6
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iFaulty valve body unit
Normal Abnormal
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Faulty pump assembly Faulty tlow control valv6
Ch€ck the tegd and return circuit lines and hoso
between the gearbox and pump for clogging and
detormation.
Check pump fluid Pressuro {sespage 17'221.Mgasure stoady-stat€ fluid Pres_sure while idling with the both
valv6Iully opon.It should be 1,500 kPa (15 kgf/
cm,,213 psi) or below.
Normal
Check the flow control valve (seo page 17-37).. Check the valvs Ior smooth movemont in the hous-
Ing.. Check tho reliel valvo for leaks.
Measure pump reliet prgssure
while idling with the both vslveIully closed.It should b€ 6,400 - 7,400 kPa {65- 75 kgt/cm' , 924 - 1,067 psi)
Normal reliel pressure
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Go to pags 17-11
17-10
Page 660 of 1681

From page 17-10
Normal
Check lorce required to turn thewhool (see page 17-'18).Start the engine and measu16the force required to turn thewheel to the right and left.Difference of the force requiredto twn the wheel to the right andto the left should be 5 N (0.5 kgf,1 lbl) or below.
Deformed
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iFaulty cylinder lines
Not bent
Adjustment OK
Faulty valve body unit
Abnormal --> Faulty gearbox
Ch€ck th6 pans other than the gearbox-related parts lorDrooer rolaton.
. . lmproper rotation ofthe steering column-related pan{s}----------------- . tau[y $eenng lornt. Faulty rack endtio-rod ond balljoints. Intgrferonce in the steering system
Normal -----> lmproperly adjusted rack guide
Check lor bent rack shaft.
Check pump fluid pressure (seepage 17-22).Turn the steoring wheel fully tothe right and l€ft while idlingwilh the pressure control valveIully open, and measure the Iluidpressure. lt should be 6,400 -
7,400 kPa (65 - 75 kgflcmr, 924 -
1,067 psi).
Normal
Ch€ck the gearbox.Remove the gearbox and mea-sure the pinion torque.The lorque should be;. 0.7 - '1.2 N.m (7 - 12 kgf.cm, 6 -
10 lbf.in) wjth the steering rackin the straight driving position.
Abnormal
Adjust the rack guide {see page17-211, and recheck the pinion
torque.
17-11
Page 661 of 1681

Troubleshooting
General Troubleshooting (cont'dl
Assist (excessively light steering) athigh speod.
Shock or vibration when wheel isturned to full lock.
Steering wheel will not return
smoothly.
a-, aa GrI r- tz
ll the problom is not correcled byadiusting the rack guide, adjustthe front wh66l alignment (see
s6ction 18).
Ch6ck th6 rack guide propgr ad-justment (see pago 17-21).
Check the rack guido lor proper
adjustment (see page 17-21).
Rack guid€ is adjusted properly.
lf the problem is not corrected byadjusting the rack guide, replscothe gearbox.Check the belt for slippage andadjust as nec€ssary {s6e page 17-20).
A and B cylinder lines are nor-mal, chgck wheol alignment (se€
section 18).
Whe6l alignment is abnormal,adjust as needod.
It should be 0.7 - 1.2 N.m {7 - 12kgl.cm.6 - 10 lbf.in) or belowwith the steering rack in thestraight ahoad driving position.
wh€el alignment is normal.R€mov€ the gearbox from thofram6 snd measure the pinion
torque on the gearbox.
lf the measurements are out ofsp€cifications. adjust the rackgurd9.
It the problom is not corrected byadiusting the rack guido. r€placethe goarbox.
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Page 662 of 1681

Unev€n or rough steering.Adjust rack guid€ (see page 17-21).
It the problem is not corrocted byadjusting the rack guid€, replacethe g€a.box.
Adjust b6ll tension. Ropl6ce theb6lt, it necossary {s€e p€ge 17-20).
lfth€ engine stalls when the wheelis turned while the vehic16 isstopped or moving at low speed.adjust idl6 sp6od (s€e s€ction 111.
ldle spoed low or €rratic.
Check powsr st6oring fuid lovel. lfthe lovel is exceggively low, ch6cktor leaks in the svstem. Add fluidto the sD6cilied l6v6l,
Air in r€gervoir, or check powsr
steering fluid lovel.
lf fluid level is OK, chock O-ringsand seals on both 6nds ot thepump suction hose. and the P/Spump housing mating surfacesand tho oumo shaft oil seal forsuction lgakr. Roplaco parts asn6c6ssary.
Pump b€lt slipping on pulloy(pump stops momentarily).Adiust b6lt t€nsion {s6e page '17-
20) or r6olac€ b€lt.
Chock if pump pressure is normaland the gauge needle trav€l is 500kPa (5 kgl/cm' , 71 psi) or lesB.Ch€ck the flow control valvo if theno€dl€ trav€l oxco€ds 500 kPa {5kg7cml, 71 p6i). lf the flow controlvalve is normal. roplace the pumpas an assemDtv.
Install the power st66ring pr6s-
su16 gaug6. Close th6 prossure
control valve lully and m6asurethe pump prossure (see page'17-22t.
Ste€ring wheol kicks backduring wide turns.
7-13
Page 663 of 1681
I
Troubleshooting
17-14
Noise and Vibration
NOTEr Pump noise in first 2 - 3 minutes after starting in cold weather is normal.
Humming
Rattle or chattering
Humming due to pulsation oI lluid is normal, particularly when the wheel isturned with the vehicle stoooed.
Outlet hose (High-pressure hose)touching the frame.
Right cylinder end seal squeak.
Pump noise, though not loud, from tho valv6 body unit can be heard when turn-ing the steering wheel to full lock in either direction. This is normal. Do not hold
the steering wh6el at tull lock tor more that live seconds wh€n inspecting.
Loose steering shaft connector,tie-rod, or ball ioint.
Check and tighten, or replacepans as necessary,
Column shaft wobbling.Reolace the column assemblv.
Check ihe rack guide tor proper
adjustment (see page 17-21).Adiust, if nec€ssary.
Rattling sound and feeling when turning the steering wheel right and left with the
engine OFF is normal.
Page 667 of 1681

Inspection and Adjustment
Steering Operation
Place the front wheels in the straight ahead position and
measure the distance the steering wheel can be turned
without moving the front wheels.
ROTATIONAL PLAY: 0 - 10 mm {0 - 0.39 inl
lf the play exceeds the service limit. perform rack guide
adiustment (see page 17-211.
lf the play is still excessive after rack guide adjustment.
inspect the steering linkage and gearbox as described
on the neld page.
Power Assist Check with
Vehicle Parked
Check the power steering fluid level (see page 17-
21) and pump belt tension (see page 17-201.
Start the engine, allow it to idle. and turn the steer
ing wheel from lock-to-lock several times to warm
up the fluid.
Attach a spring scale to the steering wheel. With the
engine idling and the car on a clean. dry floor. pull
the scale as shown and read it as soon as the tires
begin to turn,
4. The scale should read no more than 34 N (3.5 kgf,
7.7 lbf). lf it reads more, check the gearbox and
pump.
ROTATIONAL PLAY
Page 668 of 1681
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Steering Linkage and Gearbox
STEERING COLUMNInspect tor loose columnmounting bolts and nuts.
TIE.ROD END BALL JOINTInspect tor faultv movementano oamage,
BOOTInspect lor damage and deterioration.
STEERING JOINTSCheck {or loose joint bolts.
PINION SHAFT GROMMETInsp6ct for damage and deterioration.
STEERING
TIE.ROD LOCKNUTCheck {or loose locknut.
Inspect for loose mounting bolts.GEARBOX MOUNTING CUSHIONSInspect for deterioration.
BALL JOINTInspect for damage and deterioration.See pago 17-61 lor replacement.
17-19
Page 669 of 1681

Inspection and Adjustment
Pump Belt
NOTE: When using a new belt, first adjust the deflection
or tension to the values for the new belt, then readjust
the deflection or tension to the values for the used belt
after running engine for five minutes,
Inspection
Attach the soecial tool to the belt and measure the ten-
sion of the belt.
Tension:
Usad Belt: 390 - 54O N {/10 - 55 kgf. 88 - 120 lbf}
Nsw Belt: 740 - 880 N {75 - 90 kgf. 170-2(X)lbf)
NOTE:
. lf there are cracks or any damage evident on the belt,
replace it with a new one.
. Follow the manufacturer's instructions for the tension
gauge.
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CRANKSHAFT PULEYBELT TENSION GAUGE07JGG - 001010A
Inspect the pump belt for cracks or any damage.
Replace the belt with a new one if necessary.
Mea3urement without Bah Tonsion Gaugo:
Apply a force of 98 N {10 kgt,22 lbll and measure the
deflection between the power steering pump and the
crankshaft pulleys,
Drllection:
Us.d B6h: 11.5 - 13.5 mm (0.45 - 0.53 in)
New Bsh: 8.0 - 10.0 mm 10.31 - 0.39 inl
POWER STEERING PULLEY
17-20
Adiustment
1. Loosen the power steering pump mounting bolts.
2. Turn the adjusting bolt to get the proper belt ten-
sion, then retighten the bolts.
3. Stan the engine and turn the steering wheel from
lock-to-lock several times. then stop the engine and
recheck the deflection of the belt.
24 N.m l2.a kgf.m, 17 lbf.ftl