Specifications

MARATHONNORCO AEROSPACE, INC.
NICKEL-CADMIUM AIRCRAFT BATTERIES
24-34-00
Page 1102
APR 15/06
Starting at the positive terminal of the battery, tighten each terminal screw to the torque specified in
Table 2.
CARE SHOULD BE TAKEN TO INSURE THAT THE TERMINAL SCREW IS NOT BINDING,
DUE TO THREAD DAMAGE, OR BOTTOMING, BUT IS ACTUALLY TIGHTENING THE
CONNECTOR. IMPROPER TORQUE MAY RESULT IN DAMAGE TO THE BATTERY.
Some batteries contain flat-sided washers as part of the terminal hardware. The flat side serves
as a visual indicator during torquing. During initial thread engagement the washer rotates, and
upon tightening, rotation stops. This indicates to the operator that the screw is tightened in the
terminal and was not binding or bottoming when the proper torque was reached.
It is good practice to follow the battery assembly IPL during final retightening as this is a good
double check of the correct electrical order. Do not skip around over cells; do not leave the job
partially completed and come back to it. Finish the complete battery reassembly once it is
started. Forgetting where the tightening job was stopped is a good way to miss a screw or nut.
One loose connection can permanently damage a battery and may cause an explosion.