PS Magazine - TB 43-PS-709
PS, The Preventative Maintenance Monthly
ISSUE 709
DECEMBER 2011
18
PS 709
DEC 11
19
PS 709
DEC 11
Never
turn off the master disconnect switch key or the ignition switch before
setting the throttle to OFF.
If you don’t shut off the fuel ±rst, the generator will build up a load beyond its
capacity and burn out.
B
ecause ±lter
elements for the
Scraper cab’s
air system are
located on the roof,
sometimes they
don’t get regular
cleaning.
The ±ltering
elements keep you
supplied with clean
air, regardless of
how dusty work
sites are. But you’ve
got to keep the ±lter
elements clean.
Before you start using
low-pressure air (30
psi or less) to clean the
elements, make sure that
leaves, dirt, ice or snow
aren’t blocking the air
inlets.
To help keep elements
clean, start your day’s run
by removing the elements
and tapping them with
your hand to loosen and
dislodge trapped dirt.
Don’t bang elements
against the cab or other
hard surfaces! That bends
sealing edges and crushes
the ±ltering material.
Replace a damaged
element with NSN 2540-
01-062-7166.
SEE/HMMH…
Shutdown
Reminder
621B Scraper…
{
kOFf!
}
AhHeeH-UH…
I… UHH…
fOrgot…
to…
{
KOFf!
}
clean…
the… air…
filter…
element…
{
KOFf!
}
LoOk for leaves,
twigs and dirt around
the air filter element.
thE AiR FiLTER element
neEds a GoOd cleaning
to keEp cleaN air
circulaTing inSide the
ScraPER’s CAB.
Operators, the SEE (small
emplacement excavator) and the
HMMH (high mobility material handler)
generators will each do a
“deep six”
if
you don’t follow
exactly
what it says
on Page 2-85 of TM 5-2420-224-10.
That can cost your
unit about $300
bucks–the cost of a
new
generator.
So here’s the
right
way–it’s
simple…
1
3
2
4
Turn off the ignition switch.
Move the
throttle
lever to
OFF.
Park the
excavator
and
let the
engine
idle for 5
minutes.
Turn the
master
disconnect
switch key
to OFF.
709 18-19.indd
1-2
11/7/11
2:23 PM
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