COOLING SYSTEM If you have an M108 with serial 3 to 453 or M109 serial 5 to
454 make sure MWO 9-2350-217-20/4 (Aug 65) has been applied. It gives you a
better pressure relief valve for your coolant surge tank.
 When adding water or anti-freeze, first make sure the crossover tube drain cock
is open. Fill the radiator, and when liquid flows in a steady stream from the drain
cock, close the cock. Keep on filling until the radiator is full. Run engine for 5 min-
utes with filler cap closed. Check level again and add coolant if you need it. On some
first-year vehicles there are 2 drain cocks, one on the crossover tube and one on the
surge tank.


FLOTATION EiOUIPMENT If your vehicle has it, check
the way it says on pages 107-111 of your -10 TM.


PAINTING Clean and paint bare or
worn spots on painted surfaces if there
is any danger of rusting or a reflection
from metal that could give your position
 away.
 LINFRAPED OPERATION Your M109
 has lights, switches, and everything
 else needed for IR operation except
 there is no IR periscope. Keep this
 equipment in good shape because IR
 capability may be added later, if and as
 needed.

 DECALS, STENCILS-The word on all
 decals, stencils and instruction plates:
 If you can't read it, replace it.

ELECTRICAL COMPONENTS Check all
exposed electrical cables, boxes, ter-
minals and controls. Tighten things that
shouldn't be loose. Tape cables that are
frayed or have broken insulation.

 P.LIPLI, TIi:rJ. -AII needed pubs up
 H to date including changes?
- d. Lae i .. A I I JI I


SEALING COMPOUND-You
only get enough with your
kit for 2 flotation opera-
tions. If you need more ask
for Sealer fording, FSN
8030-056-0196, in your
-25P/1 TM.


SLA'ING IDEAL Reverse polarity dur-
ing slaving can ruin the diodes in your
regulator and rectifier. Decal FSN 7690-
912-3504 (P/N 10944793) tells how to
do it right. This decal should be stuck
on the wall near the slave receptacle,
which will be in the driver's compart-
ment (early vehicles) or the battery
compartment (late vehicle).


UNSAFE CONDITIONS--Check entire
vehicle for any unsafe condition which
could hurt a member of the crew. Safety
inspection includes brakes, steering and
shifting linkage and fire extinguishers.
Anything cracked with a sharp edge that
a crewman could fall against?


r~TI~


I