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p,d,_ a,d ma_,ta_, thig p,eggu,e. Sta,t the en- er nipple on the leFt rear Wh,el bfake U,,t
g_,,e. He,e a ,ot_,çeab_e _owe,_ng oF the peda_ and to the upper nipple on one of the f,O,t
gho,_d be Fe_t whe, the ge,vo çy_,nde, gta,tg wheel brake units. Apply the footbrake W,th
to ope,ate. the pedal jaCk to the in Com_,g pfeSSUfe aC-
_ 1 Cording to the table below. Read off the _,-
7 Stop the eng ine after it has run at eaSt F
_ _ k _ Com ing pressure on the pressure gauge of
m i,ute With the help of the peda jaC a PP y b R d FF h t
' _ i j the f,ont wheel rake un it. ea o t e OU -
a hyd,au_iç p,eggure of 25 kpJcm 356 p.s.i. . h h
_ going pressure on the gauge w i C i S Con,,Ct-
Wait a couple of minutes. __he hyd,aU _C P,eSS- h _ b k . F h . t
i _ i ed to the ,ea, w ee ra e un it. rom t e pOin
u,e ghou _d not d,op more than 5 kp cm 71 _ d
) of view of leakage. the brake ua ue is not e-
P_S__ _ _ F t. .F th ,_, ,,,_t,,,d F,,
eC ive i e preSsUre fem l S
8. Check the warning valve. ConneCf a hoSe tO at _eagt 1 _ geçondg.
one of the bleeder n ipples of the teSting d,UiCe
and open the deuiçe. Switch on the ignition _
_ _ _
gw__tCh a,d çheçk that the wa,n_ng _amp _ightg Incoming pressure 25 45 1 OO
kpfcm2 (p.g.i.) (355) (64O) (l 422)
when the parki ng brake is appl ied_ j j
Re_eage the parking brake. With a pedal jack Ou_going pressure 25 31 .h36_5) (47.h5_4___5)
_ th F tb k _ _ wh the wa,,_ng kpfi_ (p.s.i.) (355) i44h51 9 67h
app y e oO fa e S OW y. en
_amp lights. check the pressure on the press-
u,e gauge. The lamp should l ight at a press_re 1 o. Check the other brake valve in the same WaY
d _FFe,e,çe of _1 5 kp/cm2 (7 1 -21 3 p.s.i.) be- by ço,neCt_ng it to right rear wheel brake
twee, the Ci,çuitg. u,it and the inner, lower n ipple of the ffO,t
Afte, the test, shut off the bleeder nipple and whee_ brake unit.
remove the pedal jack. Disconnect the eleCt,iC 1 1 . _aCk up the veh_ C_e go that the wheelg rotate
Cab_e and unscrew the warning valve SW,tCh F,ee_y. App_y a,d ,eleage the b,ake duri,g
go that the Wafning ualu, retUrnS to itS ,Ofmal h_çh a CheCk _g made to gee if the whee_g
W
pogition Sçrew in the electric switch to a tigh- b tated The whee_g ghould be f,ee fo,
_ Can , rO .
tening torque of 1 .4-2.O kpm (1 _1 4 Ib_ft_)_ ha_F a geço,d a_e, the peda_ hag been ,eleas-
Connect the electric Cable_ ed. The tegt ghould be çarried out with and
g. Ch,,k th, b,,ke va_ve oF the geCo,da,y C_,çu_t without a partial vacuum in the servo bfake
by ço,necting the testing devices to the bleed- CYlindef_
FAu_T TRACl NG SCHEME
Test _ _ _
ope,a- Fau_t Cause RemedY
tion
3 __ ' _ peda_ too _ow o, too high _ Faulty brake pedal or carpet J Adi USt
q
Fad_ng p,eggu,e
Damaged brake l ine
Replace the dama9,d lin,
__oCked hoge Replace hos,
D,FFe,enCe be_ee, çirçuits Leakage in one of the circuits See POintS 5
greater than 3 kpJcm2 F l t l_ d ReCond__t_on magte, çyl__nde,
au ty maS e, Cy _n ef l
(42.7 p.s.i.)
5
The p,eggu,e d,opg
E_ternal leakage
Tighten Co,,eCt_O,S and f,-
place line or recondition leak-
ing part
Leak_ng b,ake va_ve Recondition or replace brake
valve
Leaki,g gea_ in wheel Un it Cy- ReCondition Wh,el Unit Cyl _,_
linde, der
Leaking gea_ i, magter cylin- Recondition mastef Cylinder
der
5.4
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