PS Magazine - TB 43-PS-683
PS, The Preventative Maintenance Monthly
ISSUE 683
OCTOBER 2009
Dear Editor,
I just finished reading a good article on Page 2 of PS 670 (Sep 08)
about proper startup and shutdown procedures for turbocharged Stryker
engines. In essence, the article talked about idling the engine after
startup and before shutdown to help circulate oil to the turbocharger and
prevent bearing damage.
Here at Anniston Army Depot, we know just how important this
is for other vehicles, too. We’ve encountered similar issues with the
turbochargers on the M109A6 Paladin and M992A2 ammo carrier.
Some of the bearing failures we’re seeing could easily be attributed to
incorrect startup and shutdown procedures. Can you let units know that
both of these vehicles need the same advice about warm up and cool
down to protect the turbochargers?
Donald Price
Vehicle Quality Manager
Anniston Army Depot, AL
8
PS 683
OCT 09
9
PS 683
OCT 09
C
rewmen, the microclimate conditioning system (MCS) on your M109A6 Paladin is a lot
like a bathtub. Until you pull the drainplug, it’s gonna stay full of water. And that’s a bad
situation for the MCS.
High-pressure water from
the wash rack is forced inside
the MCS. And it’s trapped
there. Eventually, the circuit
boards and other components
will corrode. Then your unit
ends up with a very expensive
repair.
Preventing that damage is
simple.
After you’ve put the vehicle
through the wash rack, drain
the water from the MCS by
opening the two drain cocks
on the cab’s ceiling just under
the MCS. Just make sure you
use a bucket to catch the
water to prevent a mess inside
the cab.
A change to TM 9-2350-
314-10 will add this procedure
to the PMCS tables.
M109A6 Paladin.
After
startup
,
idle the engine for about two minutes.
Then adjust the throttle to 1,000 rpm
until the water temperature reaches
170°F. You’ll ±nd this info on Page
2-88 of TM 9-2350-314-10 (Feb 99).
Before
shutdown
, set the throttle
at 1,000 to 1,200 rpm and idle
for about ±ve minutes or until the
water
temperature
is
185°F
or
less. This info is on Page 2-101 of
TM 9-2350-314-10.
M992A2 Ammo Carrier.
After
startup
, idle the engine for about two minutes.
Then adjust the throttle to 1,000 rpm until the water temperature reaches at least
170°F. You’ll ±nd this info on WP 0012 00-6 of TM 9-2350-293-10 (Dec 01).
Before
shutdown
, set the throttle at 1,000 to 1,200 rpm and idle for three to ±ve
minutes or until the water temperature measures 185°F or less. Then set the throttle
to 550 to 600 rpm and idle for one to three minutes before stopping the engine. This
info is on WP 0018 00-2 of TM 9-2350-293-10 (Dec 01).
Editor’s note:
You bet,
Sir
! Drivers, idling
times for your vehicles are just as important as
for the Stryker. Here’s the straight scoop:
M109A6 Paladin…
Rub-a-
Dub-Dub,
Give
Corrosion
the Snub!
M109A6 Paladin, M992A2 Ammo Carrier…
Idling Times
Important
After idling
for two
minutes,
adjust
throttle to
1,000 rpm
and idle
until water
temperature
reaches
170°F
I’ll have you
squeaky
clean in
no
time!
yes, but will
you remember
to drain my
mcs?
Water gets forced inside MCS
Open two drain cocks to drain water from MCS
the idling article
on page 2 of
ps 6
7
0 was good,
but I’m gonna let
the editor know that
idling for the paladin
and ammo carrier is
important, too!
683.08-09.indd
1-2
9/1/09
4:41:31 PM
Mr. D.P.
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