PS Magazine - TB 43-PS-692
PS, The Preventative Maintenance Monthly
ISSUE 692
JULY 2010
14
PS 692
JUL 10
15
PS 692
JUL 10
The answer might be on your truck’s
hood. With the hood open or closed,
take a close look at the air intake cap
before checks and services. The right
distance between the cap and air intake
housing is about 1
1
/
2
inches, almost two
Fngers width. Any distance less than
that means someone probably stepped
on the cap. When that happens, less air
gets into the air intake and starves the
engine for air. Then it runs rough, cuts
out or loses power under a load.
So, take a look at the cap and make
sure it hasn’t been stepped on. Check
the distance between the cap and hood,
and for dents in the cap. If something
looks suspect, have your mechanic
check it out and replace the cap with
NSN 2940-01-189-1809 if necessary.
Dear Editor,
A unit ordered the spring, NSN 5360-00-795-6975, which is on the
power steering cylinder assembly for M939-series 5-ton trucks. Then they
learned that it’s a terminal item! This spring is shown as Item 24 in Fig 317
of TM 9-2320-272-24P-1 (Feb 99).
Please tell your readers not to order NSN 5360-00-795-6975 for
the power steering assembly spring. Instead, they can get the spring by
ordering the steering drag link parts kit, NSN 2530-01-511-5844. The kit
costs about $68.
I’ve submitted a DA Form 2028 so the correction can be made when the
parts manual is updated. Your readers might want to pencil in the change
until that happens.
Richard Brunson
TACOM LAR
Wiesbaden Army Airfield, Germany
Editor’s note:
Thanks for
steering troops in the right
direction, Mr. Brunson.
•
engine runs rough
•
no power under a load
•
stalling when slowing down
•
poor idling
Starving
for
Air
HMMWVs…
Starving
for
Air
M939-Series Trucks…
sometimes
understanding
the symptom of
a maintenance
problem takes a
little detective
work.
but
eventually
enough clues
will lead to
an answer.
in southwest asia,
common complaints
about vehicle
engines include
these symptoms…
so what
causes the
problem?
Take a close
look at air
intake cap
The right dis-
tance between
cap and hood
is about 1
1
/
2
inches…
Has it been
stepped on?
…or about two
Fngers width
This spring is a
terminal item. I’ll
ask my lar about it.
Power Steering
Assembly
Spring Update
692.14-15.indd
1-2
6/1/10
5:41:58 PM
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