Table 2-1. Unit Level Preventive Maintenance Checks and Services for M113A2 FOV
Item
Interval
Item To
Procedure
Not Mission
No.
Be
Capable If:
Inspected
66
Semi-
Cooling
Test for antifreeze protection by use of
Antifreeze protec-
Annual
System
a combination antifreeze and battery
tion does not comply
tester.
with Table 1.
Continued
Test for reserve alkalinity (corrosion
Test kit indicates
protection) by means of the Test Kit,
the coolant is un-
R e s e r v e
Alkalinity
(NSN
safe.
6630-10-011-5039). Color indication of
the test kit stick will determine condi-
tion of the coolant and its potential cor-
rosion protection. Instructions for use
are as follows:
Dip stick into coolant, and remove
immediately.
Do not use test
stick if coolant temperature is be-
low 50° F (10° C) or if using a com-
mercial brand antifreeze.
Fifteen seconds after dipping, com-
pare color on the stick with the color
chart on the container, and annotate.
(a) Blue indicates coolant is safe
to use.
(b) Green indicates reserve alka-
linity and corrosion protection of
coolant is marginal but may be
used safely until the next service
inspection.
NOTE
Do not use antifreeze extender
additive (MIL-A-53009) when ar-
tic antifreeze is used in the cool-
ing system.
Yellowish green indicates the coolant
is unsafe to use. If the DD Form 314
identifies the coolant as the original
charge, then add three percent by vol-
ume (1 pint per 17 quarts) of the anti-
f r e e z e
extender
additive
(MIL-A-53009) to the cooling system.
Change 3 2-87
TM 9-2350-261-20-1
