Specifications

MARATHONNORCO AEROSPACE, INC.
NICKEL-CADMIUM AIRCRAFT BATTERIES
24-34-00
Page 1302
APR 15/06
TROUBLE PROBABLE CAUSE CORRECTIVE ACTION
FAILURE OF ONE OR
MORE CELLS TO RISE TO
THE REQUIRED 1.55
VOLTS AT THE END OF
CHARGE.
Negative Electrode not fully charged.
Cellophane separator damage.
DISCHARGE BATTERY AND
RECHARGE. IF THE CELL STILL FAILS
TO RISE TO 1.55 VOLTS OR IF THE
CELL'S VOLTAGE RISES TO 1.55
VOLTS OR ABOVE AND THEN DROPS,
REMOVE CELL AND REPLACE.
DISTORTION OF CELL
CASE TO COVER.
Overcharged, overdischarged, or
overheated cell with internal short.
Plugged vent cap
Overheated battery
DISCHARGE BATTERY AND
DISASSEMBLE. REPLACE DEFECTIVE
CELL. RECONDITION BATTERY.
REPLACE VENT CAP
CHECK VOLTAGE REGULATOR:
TREAT BATTERY AS ABOVE,
REPLACING BATTERY CASE AND
COVER AND ALL OTHER DEFECTIVE
PARTS.
FOREIGN MATERIAL
WITHIN THE CELL CASE
Introduced into cell through addition
of impure water or water
contaminated with acid.
DISCHARGE BATTERY AND
DISASSEMBLE, REMOVE CELL AND
REPLACE, RECONDITION BATTERY.
FREQUENT ADDITION OF
WATER
Cell out of balance
Damaged "O" ring, vent cap
Leaking cell
Charge voltage too high
RECONDITION BATTERY
REPLACE DAMAGED PARTS.
DISCHARGE BATTERY AND
DISASSEMBLE.
REPLACE DEFECTIVE CELL,
RECONDITION BATTERY.
ADJUST VOLTAGE REGULATOR
CORROSION OF TOP
HARDWARE
Acid fumes or spray or other
corrosive atmosphere
REPLACE PARTS. BATTERY SHOULD
BE KEPT CLEAN AND KEPT AWAY
FROM SUCH ENVIRONMENTS
DISCOLORED OR
BURNED END
CONNECTORS OR
INTERCELL
CONNECTORS
Dirty connections
Loose connection
Improper mating of parts
CLEAN PARTS: REPLACE IF
NECESSARY. RETIGHTEN
HARDWARE USING PROPER TORQUE
VALUES. CHECK TO SEE THAT PARTS
ARE PROPERLY MATED.
DISTORTION OF BATTERY
CASE AND/OR COVER
Explosion caused by:
Dry cells
Charger failure
High charge voltage
Plugged vent caps
Loose intercell connectors
DISCHARGE BATTERY AND
DISASSEMBLE REPLACE DAMAGED
PARTS AND RECONDITION.