PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
INCLUDING LUBRICATION INSTRUCTIONS - CONTINUED
Table 1. Unit Preventive Maintenance Checks and Services (PMCS)
Including Lubrication Instructions for the 966H - Continued.
NOT FULLY MISSION
2,000 Hours 1.0
or Annual Hour
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 -50°F (-47°C) requires
corrective action. Partially drain coolant and replace with water or
antifreeze to bring freeze protection to -50°F (-47°C).
Do not test strip at temperatures below 50°F (10°C) or above 85°F
a. Use test strip to check for proper
freeze point and nitrite level. If levels
are out of specification, drain and
b. Test for reserve corrosion protection
using test strip.
c. Instructions for test strip use are as
(1) Dip test strip into coolant solution
and remove immediately.
(2) After 15 seconds, compare color of
test strip with color chart on con-
Blue indicates coolant solu-
tion is safe to use.