TM 5-3805-291-23-1
PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
INCLUDING LUBRICATION INSTRUCTIONS - CONTINUED
0020 00
Table 1. Unit Preventive Maintenance Checks and Services (PMCS)
Including Lubrication Instructions for the 966H - Continued.
LOCATION
ITEM TO
ITEM
MAN-
NOT FULLY MISSION
CHECK/
SERVICE
NO.
INTERVAL HOURS
PROCEDURE
CAPABLE IF:
2,000 Hours 1.0
Cooling Sys-
22
or Annual Hour
tem
WARN I N G
DO NOT service cooling system unless engine has been allowed to
cool down. This is a pressurized cooling system and escaping steam
or hot coolant may result in serious burns.
N OT E
Cooling system is provided with ELC (pink colored) coolant from
the factory. However, green coolant may be used to top off.
At first annual service, drain ELC and replace with A-A-52624
A freeze protection indication other than -50F (-47C) requires
corrective action. Partially drain coolant and replace with water or
antifreeze to bring freeze protection to -50F (-47C).
Do not test strip at temperatures below 50F (10C) or above 85F
(30C).
a. Use test strip to check for proper
freeze point and nitrite level. If levels
are out of specification, drain and
refill cooling system (WP 0041 00).
b. Test for reserve corrosion protection
using test strip.
c. Instructions for test strip use are as
follows:
(1) Dip test strip into coolant solution
and remove immediately.
(2) After 15 seconds, compare color of
test strip with color chart on con-
tainer.
(a)
Blue indicates coolant solu-
tion is safe to use.
0020 00-15
