TM 1-1500-204-23-1
Figure 7-24. Discharge Nozzle for Corrosion Preventive Mixture
(4)
Thermostatically
control
corrosion
preventive supply tank to maintain corrosion preventive,
MIL-C-6529, Type II at a temperature of 221 to 250 °F
(105 to 121 C).
(5)
Connect an air pressure line providing 60
to 80 psi dry compressed air to the tank Mixture capacity
of the tank will be as follows:
· One quart for engines up to 1340 cubic inch
displacement.
· Two quarts for engines up to and including
2000 cubic inch displacement.
· Three quarts for engines up to 3350 cubic
inch displacement.
(6)
Make final engine run with oil system
serviced with corrosion preventive as follows:
CAUTION
At no time will engine be operated in
excess of 1500 rpm while the oil
system Is serviced with corrosion
preventive mixture. Damage may
otherwise result.
(a)
Operate engine on service fuel for a
period of 15 minutes.
(b)
With engine operating at 1500 rpm,
release corrosion preventive mixture through nozzle. As
soon as white smoke appears at upper cylinder exhaust
stacks for radial engines and at all stacks for opposed
engines, move mixture control to IDLE CUT-OFF
position and allow engine to stop. Continue aspiration of
mixture until engine ceases to fire
(7)
Drain
preservation
mixture
from
oil
system while engine Is warm, exercising care to keep
corrosion preventive mixture clean for future use.
(8)
Clean filter and screen and coat with
corrosion preventive mixture and reinstall.
(9)
When rocker box covers have been
removed for any reason, rocker box interior shall be
treated as follows:
(a)
Drain oil from each rocker box from
which cover IS removed
(b)
Spray-coat
rocker
arms,
valve
stems, springs, push rods, rocker box covers, and rocker
boxes with corrosion preventive, ML-C-16173, Grade 2.
7-41
