PS Magazine - MARCH 1986
PS, The Preventative Maintenance Monthly
ISSUE 400
MARCH 1986
2 1 /2-, 5-Ton Trucks .
..
Fuel Tank Strap OK?
-±
A
worn fuel tank strap backing
pad lets the strap rUb against the fUel
tank and scratch away the paint.
This gives rUst a chance to start.
When yoU repair or replace a fUel
tank -
or spot corrosion aroUnd the
Strap ±
look at the backing. If the
pad is worn or missing, get a new
one.
For 2
I/
2²
and older 5²tonners, pads come only ³ith the straps. Pads are
available separately for M939´series 5´ton trUcks.
NSN 9390-01-084-
0951
09±2
0953
²
09³4
±²
±±
²²³³
²
´
µ
²
¶
VEHiCLE
iTEM
NsN
M39´µ M809´
series, 5-ton
M945 5-ton
AlL other
M939-series
5-ton
siZE
3¶32´in
·
¶8´in
3/16·in
¸ ¹4-in
ºop Strap 2510´0»-753-9115
SIde Strap 5340´00-753-9122
All straps 2910´00-7¼0-9419
Pad
9390-0¸-207-8125
Pad
9390-0¸½¸92-1610
M10A FOrk¾¿fÀ
.²
.
Mechs, does the service Brake
warning system keep warning µ
even after yoU
¶
fix the hydraUlic
problems?
·f so, yoU need to reset the indica¸
tor rod on the pressUre converter.
A
flUid leak caUses the Brake warning
system bUzzer and red light to come
on ¹
and stay on -
Until the indicaº
tor rod is reset By hand.
Reset the rod like so:
•
Flip the starter switch OFF.
MW´2ÁC SÂÃÃp ÄoaDer ÅÅÆ
LoosE Bolt±
»eforE you operate agaiN, see if
the cla¼ps holding yoUr loader's
Brake ac½Uator air chamBers ½ogether
are tight¾
¿he retainÀNg Bolts and nUts loosen
from viBration, Letting air Leak oUt oÁ
the chamBer.Âo air means no Ãrakes.
•
Äse a 2´in piece of stifÅ wÆre or a
small Phillips screwdriver and pUsh
the indicator rod straight Back into
the pressUre converter.
Check the systemÇ The indicator
È
rod's reset when the warning light
goes oUt and the bUzzer stops soUndº
ing as the air pressUre gage hits the
RÄÂ range.
Éook for all the details in Para
2´5d of Ê» 43´0001´4˲3 (JUl 85).
N² Brake³
·Á the cLamp is loose, get yoUr mechanic to tighten Ìhe nUts to 70Í80 lB´ft.
Îetween schedULed 2Ï0´hr services, look for loosE nUts, shiny spots or rUst
aroUnd ½he BoLt heads and nU½s on
both
the front and rear air
Ð
cha¼Bers. If
yoU spo½ any oÑthat, repor½ it to yoUr mech pronto.
MaR 86
21
I
1
:
I
¸.
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