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Begin OCR Text:
j
P 1 2 O . P 1 8OO
F_u L_ 7R__lH_ __H E_E FoR 7HE 5ER_O _R__ E _YLIH DER
_e_tt_g o_ _e_ Eh
'_esf _ _
_
opera- fault Cause Acti on
tion
i ieakage gre8ter th8n core_ piunger ro_ or control Eii smaniie the servo cy i inder
O.O5 kg/cml (O.l Ib/sq. in.)
cy linder or delective sea l Ior
and replace the delective
same. pa rts.
i ijutgoj g _y_ra ul ic pressure iea_i ng acu um va i ve. iepiace i_e vaive_
too low.
l ntgt pressure i n creases, out_ Leak i ng pressure pl unger. Replace the press ure p lunger_
IeI pressure decreases. l nspect fhe cy l inder and
p l unger rod.
Outgoing pressure is the same Bi nd i i_g vacuum p lunger due to Remove, a l ign or repla ce the
as ingoing pressure. delormed or incorrectly cen t- vacuum cyl i nder.
_ red vacuum cy l inder.
_ Outgo ing pressure does not a) See above See above_
return to zero. b) the vacuum p Iu nger retu rn Rep lace the spring.
, spri ng too weak .
_ iju tgoi n pressure ia rger i_an _ i r iea_ ge ai va ive cover, con- iig _ien _e 6oiis or repiace
i ngo'i ng pressure. necting pipe or cyl i nder end_ the gasket_
_ l ngoi ng pressure larger tha n Bi nd i ng pressure p Iu nger ai_d Recond ition the servo cyl ì n-
outgoi ng pressu re. vacu um plunger_ der_
_ See po ni i. See poi t 3. See poi nf 3,
b i _cess i e vacu um iea_age. Lea_age a I vaive cover. con- ii g_ien i_e 6oiis or replace
necting p_ipe or cy li nder end . the gaskets.
7 _y_rau ic pressure iai is. ioniroi i u nger sea i s iea_ i ng_ fiepiace he seais, c_ec_ the
cyl i nder.
_e_tl_g whe_ l__talled l_ vehlEle
_
_. _-1 9
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