Lubrication - Thrush Aircraft S2R–T660 Maintenance Manual

THRUSH AICRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
and neutralizing or cleaning any spilled electrolyte or any corrosion. Use bicarbonate of soda and
clean water to neutralize corrosion. Follow with a thorough flushing of clean water and wipe dry.
Clean the cable and terminal connections with a wire brush and coat with petroleum jelly to
minimize corrosion.
** CAUTION **
Do not allow the bicarbonate of soda to enter the
battery filler openings, as it will neutralize the
electrolyte, which could permanently damage the
batteries.
A hydrometer test of the battery's solution should be made each 50 hours of operation, or more
often in hot weather. If the specific gravity tests 1.240, the battery should be removed and
recharged. The solution levels should be examined and, when necessary, add distilled water to
maintain the level of 3/16 inch over the separators. If distilled water is added, do it just prior to
recharging so that the added water mixes with the solution. When the recharging is completed, the
specific gravity should be between 1.275 and 1.300.
The battery should be checked for grounding to the case. A voltmeter can be used to check
between the positive cell and the case. A ground fault exists if there is a reading on the voltmeter. A
dated service record shall be attached or stamped on the terminal side of the battery to indicate
that the battery has been capacity tested. Refer to Section Ten for recharging procedures.

LUBRICATION

For the lubrication requirements, refer to Figure 2-6 Lubrication Chart (8 sheets). Before adding
grease to fittings, wipe the fittings clean. Lubricate the fittings and wipe off the excess lubricant.
Lubricate the hinges with a squirt can or a brush moistened with oil. Wipe off the excess oil to
prevent accumulation of dirt and grit.
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Effective: 12/17/03