ITEM
INTERVAL
ITEM
TO BE
PROCEDURES
CHECK FOR AND HAVE
REPAIRED OR ADJUSTED
EQUIPMENT
IS NOT READY
NO.
B D A
D W M Q S
A
INSPECTED
AS NECESSARY
AVAILABLE IF
TM 55-1930-209-14&P-17
Table C-1. Preventive Maintenance Checks and Services for Workboat, Lifesaving,
and Firefighting Systems (Continued)
B - Before
D - Daily
Q - Quarterly
D - During
W - Weekly
S - Semiannually
A - After
M - Monthly
A - Annually
I.
Perform all daily checks.
m. Check specific gravity of battery and
charge and clean as follows:
1)
Remove vent caps and check individ-
ual cell specific gravity.
2)
Place hydrometer in each cell and take
reading and recharge if required. The
following table provides ranges of
specific gravity (S.P. Gr.) for a cell of
80F (26.7C).
Cold and Temperate Climates
1.265 S.P. Gr.
100 percent charged
1.225 S.P. Gr.
75 percent charged
1.190 S.P. Gr.
50 percent charged
1.155 S.P. Gr.
25 percent charged
1.120 S.P. Gr.
Discharged
Tropical Climates
1.225 S.P. Gr.
100 percent charged
1.185 S.P. Gr.
75 percent charged
1.150 S.P. Gr.
50 percent charged
1.115 S.P. Gr.
25 percent charged
1.080 S.P. Gr.
Discharged
3)
Remove battery from pump if charg-
ing is required.
4)
Connect battery to 12 V battery
Battery not
charger at 10 amp hr charging rate or
charged.
equivalent.
5)
Replace hydrometer in each cell and
take reading; continue charge if
required.
C-34
