TM 1-1270-476-30
6-16
6-4. BRAKE RELEASE POWER SUPPLY ASSEMBLY REPAIR (cont)
2. BATTERIES BT1 AND BT2 RECHARGING
TEST
a. Press TEST switch (1). If test lamp (2)
illuminates, even dimly, test is complete
and batteries are charged.
b. If TEST lamp (2) does not illuminate,
charge batteries.
CHARGE
c. Adjust current limit of DC power supply to
250 ± 25 mA.
d. Adjust output voltage of DC power supply
to 30.0 ± 0.3 vdc.
e. Connect positive (+) output of DC power
supply to J2 (3).
f. Connect negative (-) output of DC power
supply to J3 (4).
g. Allow batteries to charge at least 3 hours.
TEST lamp (2) will illuminate with intensity
proportional to charging current. As battery
becomes charged, the intensity of TEST
lamp (2) will diminish.
h. Press TEST switch (1). If TEST lamp (2)
illuminates, charging is complete.
Disconnect DC power supply from J2 (3)
and J3 (4).
i. Repeat step a.
END OF TASK
