TM 5-3805-290-23-2
BRAKE ACCUMULATOR REPLACEMENT - CONTINUED
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CHARGING - CONTINUED
N OT E
To ensure that nitrogen charge is correct, each brake accumulator piston must be at bottom of accumulator
cylinder. Nitrogen gas pressure varies with temperature. To obtain most accurate nitrogen charge, temper-
ature of each accumulator must be identical to air temperature around accumulators.
Table 1. Charging Pressure and Temperature Relationship for
Typical 500 psi (3,450 kPa) Accumulator.
TEMPERATURE F (C)
PRESSURE PSI (KPA)
20F
453 psi
(-7C)
(3,123 kPa)
462 psi
30F
(-1C)
(3,185 kPa)
472 psi
40F
(4C)
(3,254 kPa)
482 psi
50F
(10C)
(3,323 kPa)
491 psi
60F
(16C)
(3,385 kPa)
500 psi
70F
(21C)
(3,448 kPa)
509 psi
80F
(27C)
(3,509 kPa)
519 psi
90F
(32C)
(3,578 kPa)
528 psi
100F
(38C)
(3,640 kPa)
538 psi
110F
(43C)
(3,709 kPa)
547 psi
120F
(49C)
(3,771 kPa)
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