PS Magazine - TB 43-PS-664
PS, The Preventative Maintenance Monthly
ISSUE 664
MARCH 2008
14
PS 664
MAR 08
2' 7
3
/
4
"
2-2
1
/
2
"
2' 10"
1
1
/
2
"
1
1
/
2
"
3' 4"
6"
2'
PLYWOOD
NO STEP
Making the Fin Shield
Using the Fin Shield
To use the fn shield, remove the
eye-hook seals and slip it over the
two liFting rings. Then lay it flat
on the oil cooler Frame. The rings
prevent the shield From sliding onto
the raised hood.
Don’t
run the engine with the
shield in place! It’ll block air flow
and lead to engine overheating—the
very thing your shield is designed to
help prevent!
AFter using your fn shield, replace the eye-hook seals. And even though the
board should protect the fns against bending, check For bent fns anyway. Then use
the fn-straightening tool, NSN 5120-00-157-2180, as needed.
Storing the Fin Shield
Take care oF the fn shield by storing it flat. That keeps it From warping. Lay it on
the floor away From traFfc areas, or hang it on the wall against a flat surFace.
W
ant to reduce overheating your HMMWV’s engine and transmission? You can iF
you have straight fns on your HMMWV’s radiator and oil cooler!
Without protection, the fns can bend during PMCS and repair work. And when
enough oF the fns bend, the reduced air flow through the radiator and cooler leads to
engine and transmission overheating.
How can you keep the fns on your HMMWV straight? Make your own fn shield.
Adjust the dimensions as necessary to ft your HMMWV.
Also, round oFF the edges and paint the board to prevent splinters.
And be sure to stencil NO STEP on the board.
HMMWV Winch Kit
The 9,000-lb winch is no longer available for the M998/A1 HMMWV. Instead, use NSN
2590-01-456-7879 to get a 10,500-lb winch kit that replaces the old one. Make a note until
this NSN is added to the TMs. Installation instructions come with the kit.
HMMWV Spare Tire Carrier
Use NSN 2590-01-525-1995 to get a spare tire carrier for ONLY these HMMWV vehicles
with an airlift rear bumper: M1113 expanded capacity HMMWVs (not carrying a shelter),
M1114 up-armored armament carriers, M1025A2 armament carriers, and M1097, M1097A1
and M1097A2 heavy variant cargo/troop carriers.
Fins Don’t Bend
When Protection’s In
be careful!
dont bend
that HMMWV’s
radiator fins!
I won’t!
I’m using the
fin protector
I made!
Lay shield flat on oil cooler frame
Store shield flat on floor…
…or on wall
do it by
cutting
3
/
4
inch
plywood
using these
approximate
dimensions…
HMMWV…
664.14-15.indd
1-2
2/4/08
12:33:52 PM
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