TM 55-1930-209-14&P-19
Table 9-3. Preventive Maintenance Checks and Services for Electrical Power Systems(Continued)
B - Before
D - During
A - After
H - Hourly Interval
INTERVAL
ITEM
PROCEDURES
EQUIPMENT
ITEM
TO BE
CHECK FOR AND HAVE
IS NOT READY/
NO.
INSPECTED
REPAIRED OR ADJUSTED
AVAILABLE IF
B D A
H
AS NECESSARY
250 hrs
(b) Install drain plugs. Fill system with
a commercially available cleaning
solution or 1 kg (2 lb) Sodium
Bisulfate (NaHSO4) per 40 L (10
US gal) water.
(c) Start and run for 1/2 hour. Stop
engine and drain cleaning solution.
(d)
Flush system with clean water
until draining water is clean. Do
not run engine while flushing.
(e)
Install all drain plugs. Fill system
with neutralizing solution or 250 g
(1/2 lb) Sodium Carbonate Crys-
tals (Na2CO.H20) per 40 L (10 US
gal) water.
(f) Start and run engine for 10 min-
utes. Stop engine and drain neu-
tralizing solution.
(g) Flush system with clean water,
until draining water is clean. Do
not run engine while flushing.
(h)
Install all drain plugs.
(i)
Fill engine with clean water. Run
the engine for 10 minutes and
drain. Repeat until drained water
is clean.
(j)
Refill with antifreeze and water to
provide protection to the lowest
expected ambient temperature.
(k) To help avoid airlocks, add coolant
slowly, bringing coolant level to
within 1/2 in of bottom of filler
pipe.
6)
Start engine with radiator cap off.
When coolant level stabilizes, add
additional water if necessary.
7)
When coolant is at proper level and
level stabilizes, replace radiator cap.
9-31
