Sec. 5
P a g e 9
SECTION 5
lin & k e A ,
A ll inform ation in th is se c tio n in S er v ic e Manual S T -3 3 1 -7 1 a lso
ap p lies to v e h ic le s co v ered by th is supplem ent, except a s sp e c ific a lly
sta ted in the follow ing procedures:
SECTION 5A
< M
- t^ d n < u c U c B
' l a h
e i .
BRAKE SYSTEM MAINTENANCE
CHECKING FLUID LEVEL
A stic k e r (fig. 1) reading "CHECK BRAKE
FLUID LEVEL EVERY 30 DAYS OR 3000 MILES”
is affixed to the cover of each brake m aster c y l
in d er. F igure 2 illu s tr a te s a typ ical cov er with the
stic k e r applied.
Fluid le v e l should be m aintained to within
V2"
of top of m aster cylin d er r e se r v o ir .
VACUUM GAUGE
Two vacuum gauges are u sed oft som e v e
h ic le s . Two gauges a re standard equipment on a ll
■
sch o o l b u ses (d u a l-sp lit-b ra k e sy stem ) and optional
on a ll other v e h ic le s equipped with dual (split)
brake s y s te m s . T h ese gauges a re mounted on a
sp e c ia l bracket below the cen ter of the dash panel.
One gauge is connected to one vacuum s y s te m
of the dual brake sy ste m and the other gauge is
connected to the other vacuum sy s te m . Vacuum
gauge readings may d iffer during operation of the
v e h ic le . H ow ever, if the readings d iffer by ten
in ch es of m ercury or m ore for an extended p erio d
of v e h ic le operation the vacuum sy s te m s should be
checked im m ed iately to determ ine c a u s e s . If the
vacuum gauge is su sp ected of being faulty, check
gauge according to in stru ctio n s in S e r v ic e Manual
S T -3 3 1 -7 1 , page 5A -2 2 . O th erw ise, check vacuum
sy ste m com ponents for lea k s or m alfu n ction s.
Figure 1—B ra k e Fluid Sticker
Figure 2—M aster C y lin d e r C o v e r
)
