PS Magazine - TB 43-PS-674
PS, The Preventative Maintenance Monthly
ISSUE 674
JANUARY 2009
12
PS 674
JAN 09
Dear Half-Mast,
I need to know how to properly check the power steering on M1113 and
M1114 up-armored HMMWVs. While sitting still in traffic, the steering wheel
is hard to turn. Plus, they make noise when turned all the way left or right.
But once we move forward, the steering wheel moves as smooth as silk.
I don’t think there’s a problem when the steering wheel doesn’t easily
move when sitting still. But some people disagree with me. Would you tell us
the right way to check the power steering?
Mr. P.V.R.
Dear Mr. P.V.R.,
Can do. TACOM LCMC will update TM 9-2320-387-10 to include the right
procedure. But until that happens, you might want to go get this TM now so you can
pencil in this change.
TACOM is working to fx problems with vehicles not being able to pass the static
steering check procedure shown as Item 13 in the PMCS table in your -10 TM. This
procedure calls For the steering wheel to be turned From leFt to right, but it doesn’t
require the steering wheel to be turned Fully From stop to stop.
A HMMWV steering wheel that turns From leFt to right with normal or slightly
more than normal eFFort as the vehicle sits stationary is usually good to go. But with
the addition oF armor protection kits and the resulting overloaded axles, your M1113
and M1114 HMMWVs don’t pass the static steering check most oF the time.
Armor kitted vehicles and vehicles outftted with Fragmentation kits, Gunner
Protection kits, Mine/IED detection devices etc., that do not pass PMCS item 13,
Static Steering Check, prior to reporting the vehicle to maintenance, should frst
per±orm PMCS item 14. I± the vehicle success±ully meets the criteria ±or item 14a,
then recheck the steering wheel operation in the ±ollowing manner:
NOTE:
Position the vehicle to an area to allow su±fcient room to operate ±or a short
distance at 5 to 10 mph, in a zig zag manner, without obstruction or imposition ±rom
surrounding environment.
With vehicle at idle, trans±er in H, and transmission in D, allow vehicle to move
±orward at not less than 5 and not more than 10 mph. As the vehicle moves ±orward
turn steering wheel ±rom right to le±t. Steering wheel should move ±reely.
Power Steering Checks
M1113/M1114 HMMWVs…
Power Steering Checks
to prevent unnecessary
down time, here’s
tacom’s solution until a
final procedure can be
developed.
pencil these words in the
operator’s manual pmcs
table as pmcs item 14.1
until the final procedure
revision gets published…
what’s
wrong with
the steering
wheel?
it’s so
hard
to
turn when we’re
going slow!
674.12-13.indd
1-2
11/22/08
3:15:32 PM
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