Corrosion Prevention - Piper 6X Maintenance Manual

(5) Place a wet cloth be over the vent caps within the manifold to prevent splashing of electrolyte.
(6) The battery may be charged at any rate (in amperes), but in no case to the point which would
produce bubbling and gassing of the electrolyte or a cell temperature of 115° F.
(7) A constant current charge is recommended. Start charging at 3 amperes; finishing with 1.5
amps. A fast charge is not recommended.
(8) As charging occurs, if any cells sputter or flood, the electrolyte level is too high and the excess
must be removed. Adjust electrolyte level at the end of the charge. The level will rise due to
acid returning to the electrolyte mix, normal gassing, and expansion due to temperature rise.
(9) Thoroughly clean battery after charging to remove acid bridges which can form during
charging.
E. Corrosion Prevention (See Figure 22.)
Check battery for spilled electrolyte or corrosion each 50 hour inspection or every 30 days,
whichever comes first. Should spilled electrolyte or corrosion be found in, on, or near the battery,
clean the battery, its mounting, and the general area as follows:
(1) Remove battery from airplane, see above.
(2) Disconnect fuselage vent line from acid recovery sump jar top.
(3) Keeping the sump jar upright in a vertical position, remove the sump jar by removing the two
bracket screws that secure jar to bracket.
CAUTION: DO NOT ALLOW BAKING SODA SOLUTION TO ENTER BATTERY.
(4) Remove all accumulated contamination from the battery exterior with a stiff bristle brush. (Do
not use a metal brush or abrasive materials.) Wipe exterior of battery and interior of manifold,
including manifold top cover, with a cloth saturated with a solution of bicarbonate of soda
mixed - one part soda to twenty parts of water. (Check that cell plugs are tight - do not allow
soda solution to enter any cells.)
(5) Wash entire battery with clear water and dry thoroughly.
(6) Wash down the battery support and floor area, hold down supports, connectors and cable
ends with a soda solution followed by clear water.
(7) Visually inspect all vent lines for kinks, cracks, flexibility, and loose connections. Replace only
with special hoses from parts catalog. ( DO NOT REPLACE WITH ORDINARY RUBBER
HOSE.)
(8) Slowly pour the soda solution into the fuselage vent line, still attached to the bottom of the aft
fuselage surface, using a small funnel. The solution will flow out the bottom vent.
(9) Follow with a final purge of clear water to flush the vent line and then blow dry with low
pressure air. This ensures that the vent line is not kinked or restricted and that it is neutralized.
(10) Dry entire battery shelf area and component parts thoroughly. Apply fresh acid resistant paint if
required.
(11) Wipe down the bottom aft fuselage area surrounding the vent with soda solution and clear
water. Dry. Apply a fresh coat of high quality wax to entire area.
PAGE 24 24-30-00
Jun 1/03
THE NEW PIPER AIRCRAFT, INC.
PA-32-301FT / 301XTC
MAINTENANCE MANUAL
2G24