1996 ACURA RL KA9 Service Repair Manual

Troubleshooting
General Troubleshootin g
Check th e followin g befor e yo u begin :
Ha s th e suspensio n bee n modifie d i n a wa y tha t woul d affec t steering ?
Ar e tir e sizes , tir e variet y an d ai r pressur e correct ?
Is th e steerin g whee l origina l equipmen t o r equivalent ?
Is th e powe r steerin g pum p bel t properl y adjusted ?
I s steerin g flui d reservoi r fille d t o prope r level ?
I s th e engin e idl e spee d correc t an d steady ?
Hard Steerin g (Chec k th e powe r assis t (se e pag e 17-12 ). I f th e forc e is ove r 2 5 N (2. 6 kgf , 5. 7 Ibf) , procee d wit h thi s troubleshooting .
Chec k pum p flui d pressur e (se e
pag e 17-17 ).
Measur e steady-stat e flui d pres -
sure whil e idlin g wit h th e bot hvalve s full y open .
I t shoul d b e 1,50 0 kP a (1 5 kgf / cm2,
21 3 psi ) o r less .
Check th e flo w contro l valv e (se e pag e 17-26 ).
• Chec k th e valv e fo r smoot h movemen t i n th e hous -
ing.• Chec k th e relie f valv e fo r leaks .
Chec
k pum p flui d pressur e (se e
pag e 17-17 ).
Measur e pum p relie f pressur e
while idlin g wit h th e pressur e con -trol valv e full y closed .
I t shoul d b e 7,80 0 - 8,80 0 kP a (8 0
-9 0 kgf/cm
2, 1,138-1,28 0 psi).
G o to pag e 17- 5
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From pag e 17- 4
Measur e th e forc e require d t o
tur n th e whee l wit h th e powe rsteerin g spee d senso r hos e
plugge d an d th e vehicl e parke d
(se e pag e 17-12 ).
Chec
k forc e require d t o tur n th e
whee l (se e pag e 17-12 ).
Star t th e engin e an d measur eforce require d t o tur n th e whee l t o
th e righ t an d left . Differenc e o f th e
forc e require d t o tur n th e whee l t o
th e righ t an d t o th e lef t shoul d b e
2. 9 N (0. 3 kgf , 0. 7 Ibf ) o r less .
Adjus t th e rac k guid e (se e pag e
17-16 ), an d rechec k th e pinio n
torque.
• Steerin g effor t stil l mor e tha n 2 5 N (2. 6 kgf , 5. 7 Ibf) .
Chec k th e assis t contro l valv e fo r stickin g o r a
clogge d orifice ; clea n th e valv e a s necessar y (se e
pag e 17-39 ).
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Troubleshooting
General Troubleshootin g (cont'd )
Assist (excessivel y ligh t steering ) a t
hig h speed .
Shoc k o r vibratio n whe n whee l i s
turne d to ful l lock .
Steerin g whee l wil l no t retur n
smoothly .
If th e proble m is no t correcte d b y
adjustin g th e rac k guide , replace
th e gearbox .
I
f th e measurement s ar e ou t o f
specifications , adjus t th e rac k
guide .
Whee
l alignmen t i s normal .
Chec k th e steerin g whee l opera -
tio n an d powe r assis t chec k (se e
pag e 17-12 ).
A
an d B cylinde r line s ar e nor -
mal , chec k whee l alignmen t (se e
sectio n 18 ). Whee
l alignmen t i s abnormal ,
adjus t a s needed .
A
o r B cylinde r lin e i s deformed ;
replac e it .
Chec
k cylinde r line s A an d B fo r
deformation .
Chec
k th e rac k guid e fo r prope r
adjustmen t (se e pag e 17-16 ).
Chec k th e rac k guid e fo r prope r
adjustmen t (se e pag e 17-16 ).
Rac k guid e is adjuste d properly .
Chec k th e bel t fo r slippag e an d
adjus t a s necessar y (se e pag e
17-15 ).
If th e proble m is no t correcte d b y
adjustin g th e rac k guide , adjus t
th e fron t whee l alignmen t (se e
sectio n 18 ).
Rac k guid e wa s backe d of f exces -sively.
Adjus t th e rac k guide .
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Install th e powe r steerin g pressur e
gauge . Clos e th e pressur e contro l
valv e full y an d measur e th e pum p
pressur e (se e pag e 17-17 ). Adjus
t bel t tensio n (se e pag e
17-15 ) o r replac e belt .
Adjus
t rac k guid e (se e pag e 17-16 ).
I f th e proble m is no t correcte d b y
adjustin g th e rac k guide , replac e
th e gearbox .
Adjus t bel t tension . Replac e th e
belt , i f necessar y (se e pag e 17-15 ).
I f th e engin e stall s whe n th e whee l
i s turne d whil e th e vehicl e i s
stoppe d o r movin g a t lo w speed ,
adjus t idl e spee d (se e sectio n 11 ).
Chec k powe r steerin g flui d level . I f
leve l i s excessivel y low , chec k fo r
leak s i n th e system . Ad d flui d t o
th e specifie d level .
I f flui d leve l i s OK , chec k O-ring s
an d seal s o n bot h end s o f th e
pum p inle t hose , an d th e P/ Spum p housin g matin g surface s
an d driv e shaf t oi l sea l fo r suctio n
leaks . Replac e part s a s necessary .
Chec k i f pum p pressur e i s withi n
th e rang e 7,80 0 - 8,80 0 kP a (8 0 - 9 0
kgf/cm
2, 1,13 8 - 1,28 0 psi ) an d th e
gaug e needl e trave l i s 50 0 kP a ( 5
kgf/cm
2, 7 1 psi ) o r less . Chec k th e
flo w contro l valv e i f th e needl e
trave l exceed s 50 0 kP a ( 5 kgf/cm
2,
7 1 psi) . I f th e flo w contro l valv e i s
normal , replac e th e pum p a s a n
assembly .
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