PS Magazine - TB 43-PS-678

PS, The Preventative Maintenance Monthly

ISSUE 678

MAY 2009
PS Magazine - TB 43-PS-678 - Page 3 of 33
3
PS 678
MAY 09
D
rivers, if your Stryker is equipped with slat armor, ramp PM and safety become
more important than ever. So follow these tips to keep your ramp—and everyone
around it—functioning properly.
•
Tap the horn twice and then wait a few seconds before raising or lowering the
ramp. That gives others a warning and enough time to get out of the way.
•
Before closing the ramp, make sure the vehicle has enough air pressure built
up—above 90 psi. Otherwise, the ramp locks may not engage completely. Check to
make sure the ramp open LED goes out.
If you’re closing the ramp from the squad compartment, make sure the cam locks
rotate all the way to the closed position.
A Stryker pointed downhill on a slope of more than 15° may need a push from
inside the vehicle to open the ramp.
•
You cannot lower the ramp
fully
if
the
tow
pintle
is
installed. The ramp will hit
and bend the pintle shaft. So
remove and stow the pintle
until it’s needed.
When removing the tow
pintle, make sure you install
the pintle plug, NSN 5340-20-
001-0203. That keeps dirt and
moisture out of the vehicle.
You’ll also need an O-ring,
a lock pin, NSN 5315-01-328-
5286, to install the plug.
•
Never exceed the load capacity for the ramp and ramp door. The ramp chains may
stretch or break and you can ruin the hydraulics.
The ramp’s load capacity is 1,000 pounds. The door’s load capacity is 500 pounds.
Always raise or lower the ramp completely. Don’t lower the ramp partially to
give soldiers a seat or to carry equipment, especially when slat armor is installed.
•
Remove any water buildup
under the floor plates, then
have your mechanic give the
ramp chains a light coat of
GAA semiannually to prevent
rust. Make sure he gets all of
the chain, too. Sometimes only
the portion of the chain that
shows when the ramp is down
gets lubed. With slat armor
installed, there’s about another
three feet of chain that’s hidden
under the floor plates.
•
Give the ramp chain pulleys
a few shots of GAA, too. A
well-greased ramp chain won’t
do much good if the pulleys
seize up.
Ramp PM
Always a
PLUS
Ramp PM
Always a
PLUS
Let air pressure build above 90 psi
Ramp
open
LED
light
should
go out
Install pintle plug when tow pintle is stored
Make sure chain under
floor plates is lubed
Lube
ramp
chain
pulleys,
too
how am I
supposed to
raise my ramp
with all this
weight?!
sounds
like some-
one had
the lunch
special!
Stryker…
678.02-03.indd
1-2
3/30/09
2:21:23 PM
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