TM 55-1930 209 14&P-91
Table C-1. Preventive Maintenance Checks and Services for Electrical Power Systems (Continued)
B - Before
D - During
A - After
H - Hourly Interval
Item to be
Check for and have repaired
or adjusted as necessary
(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
solution. (d) Flush system with
clean water until draining water is
dean. Do not run engine while
(e) Install all drain plugs. Fill system
with neutralizing solution or 250 g
Crystals (Na2CO.H20) per 40 L
(10 US gal) water.
(f) Start and run engine for 10
minutes. Stop engine and drain -
(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
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 l12 in of bottom of filler
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.