CSP-HMI-3 MD Helicopters, Inc.
MAINTENANCE MANUAL
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96-05-00
The information disclosed herein is proprietary to MD Helicopters, Inc.
Neither this document nor any part hereof may be reproduced or transferred to
other documents or used or disclosed to others for manufacturing or any other
purpose except as specifically authorized in writing by MD Helicopters, Inc.
Copyright © 1999−2016 by MD Helicopters, Inc.
possible) and neutralize with 3 percent
boric acid solution.
(2). Follow with thorough flushing with
clean water (cold if possible).
10. Battery Repair
(Ref. Figure 201) Repair battery according to
battery manufacturer's instructions (Ref. Sec.
01-00-00) and as follows:
Consumable Materials
(Ref. Section 91−00−00)
Item Nomenclature
CM114 Petrolatum
CM219 Methyl-ethyl-ketone
CM232 Rust inhibitor spray
CM425 Sealing compound
CM702 Lockwire CRES
CM716 Tape, pressure sensitive
CM815 Solder
NOTE: For information on repairs not covered
in following procedures, refer to battery
manufacturer's instructions (Ref. Sec.
01-00-00).
Discharge battery before at
tempting disassembly. If bat
tery has not been discharged, serious
injury to personnel and/ or damage to
battery may occur.
(1). Removing Bus Bars:
(a). Remove attaching hardware securing
bus bar.
NOTE: See Figure 201 and note location of bus
bar with temperature sensing switches. If
switches need to be removed, perform Tem
perature Sensing Switches Replacement.
(b). Lift bus bar from cell.
(c). Clean bus bar with MEK (CM219).
(2). Removing Cells:
NOTE: Two battery bus bars and cord may be
used to fabricate a puller. Attach cord to
hole at one end of each bus bar. Initial re
moval of either cell No. 5 or No. 6 aids in re
moval of other cells.
(a). Remove holddown bars from battery
case.
(b). Remove battery bus bars and/or bus
wires or strips from cells.
(c). Remove nylon separator when
required to permit removal of cells.
(d). Attach cell puller to cell terminals
and secure.
(e). Lift cell from battery case.
NOTE: Note polarity of removed cell to prevent
reinserting cell in reverse polarity.
(3). Removing Receptacle:
(a). Loosen and remove two receptacle
bus strips from adjacent cells;
disconnect wires from battery
temperature sensing switches.
(b). Remove bus bar that connects cells
No. 1 and No. 2.
(c). Remove cell holddown bar from same
side of battery as connector separa
tor.
(d). Remove nylon separator and cell No.
1.
(e). Remove connector separator.
(f). Remove receptacle with attached
receptacle bus strips from case.
(g). Remove sealant and unsolder and
remove two receptacle bus strips and
temperature sensing switch wires
from back of receptacle.
(4). Replacing Battery Case:
(a). Disassemble battery per Battery
Repair steps (1). thru (3).
(b). Using stiff nylon brush and 3-per
cent boric acid solution, wash re
placement battery case; flush with
clean cold water to ensure case is
clean, and then air dry in warm area
for 1 hour, or more.
WARNING
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