PS Magazine - NOVEMBER 1978
PS, The Preventative Maintenance Monthly
ISSUE 312
NOVEMBER 1978
:I
Start by checking the fuid leveL
in the master cYLinder. Then Un-
screw· the master cyLinder Fller
cap. The brake fuid Level should
be within
¥
inch o± the top ²
like
it says in TM 9³2320´209´20 (Apr
65), page 285, para 179c(3).
That means the top o± the brake
fuid reservoir µ
not the top o± the
¶Ll hole.
I± the fuid Level's more that
¥
inch below the top o± the reservoir,
the truck's Losing brake ¸uid ¹
soºe place.
Check all o± the hydraulic lines
»r leaks ¼. Between the master cyl½
inder and the air¾hydra¿Lic cyLin-
der. Between the air´hydraulic
cylinder and the wheel cyLinders.
A leak Àom a wheeL cylinder
probabLy will show up as fuid on
the inner side o± the wheeL. But
you may have to take the wheeL oÁ
to make sure.
Sure you check the master cyL-
inder boot, too µ
with your eÂes
only µ
to see i± f¿id's Leaking out.
A±ter the leak's Ãund ²
and
¶xed Ä
you add fuid to the mas´
Lf that Floor 1-±²
panel in FRnt
oF the driver
'
s
seat
You have to unhook
The brea³er line
.
´.
and pRbably take
r-"±!;m²:³´I
out the elbow ´´µ so
ter cyLinder to bring the level up to
sn¿Á.
¶6
MBBO·SeRies 11/4µTon TRucks .
.¶
·
Whel BEring WR±ncH Maz±
There are 5 diÁerent size wheel
bearing adjusting n¿ts spread
across the Å880´series truck feet.
TM 9´2320´266³20P (Æeb 78) Lists
2 special socket wrenches, b¿t yo¿
may need 3 coººon socket
Ç wrenches, depending on the
truck's modeL and age:
This'll help yo¿ get it right.
Note it in your TÅÈ
2
9/15±±
t¸UCK ALE
4x2
ÉonÊ
ËXÌ
ÍonÊ ÎeaRÏÐÑ
ÌXÒ
ÓonÔ
(la¹º)
»l¼
½ºa½¾ºa½¼y¿
ÕÖL
ÀÁÂÀ ÃÄ
a
źÆ
*×ØsÙeD Ún
¹hº ÇÈ0P
ÛÅ.
WÉNÊH
5ËÈ0Ì00ÌÈ6ÍÎÏ837
5ÐÈÑÎ00ÎÒ68ÎÈÓ86
*
5
·
2
0
´
00Ç
2Ü
ÈÇ56
85
.
ÝÞ2ßà0á´ßâã´8äå2
*
5ÍÈ0Ô00ÌÈ6ÕÌÈÖ×6
ØÙE
\
/ _:
2
%Ú
1 Ü/Ì´in, á´Øn DæiVe
È
çèé´Ønê ÜëÌ´Øì díive
¸
îïð1ñ³inê Üèò´óô drive
2 Üõ8´in, Üö÷´in Drøve
Û
åùáñ´inê ú³in DrØve
ûou'll aLso need a 3üý´to´þ´in socket wrench adapter, NSN 5þ20´0ÿ³
227´810ý, »r those 1´in drive sockets.
ûour a¿thority »r ordering any o± these tooLs thĀt're not aLreaāy in
your ³20P TM is Appendix A, CTA 50³9Ă0ă
¹7
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