THRUSH AIRCRAFT, INC – MODEL S2R-G10
AIRCRAFT MAINTENANCE MANUAL
Page 2-26 Effective 03/26/2010
S: COCKPIT (Continued)
Daily
50
hrs
100
hrs
400
hrs
8.
Check operation of flight & engine controls to
ensure proper operation and installation.
X X
T: ELECTRICAL SYSTEM
Daily
50
hrs
100
hrs
400
hrs
1. Check the battery charge and water level.
X X
2.
Check battery relays, spike diodes, regulator,
fuses, and switches for security.
X
3. Check all wiring for chafing and clamping. X
4. Check all terminals for security and corrosion X
5. Check the battery’s vent hose for security and
deterioration.
X
BATTERY MAINTENANCE
The 24-volt batteries are installed in the
engine compartment between the engine
and firewall, on top of the engine mount.
Access is gained to the battery by removal
of the top aft cowling. Battery servicing
involves adding distilled water to maintain
electrolyte level of at least 3/16 inch over
the separators, checking the cable
connections, 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.
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 or less, the
battery should be removed and recharged.
The solution levels should be examined
and, when necessary, add distilled water
to maintain the minimum 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 isolation
from 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.
CAUTION
AIRFRAME MAINTENANCE
CORROSION CONTROL
Cleanliness is the key to corrosion
control/prevention on the Thrush. Side
skins are attached with easily removable
quarter turn fasteners so the fuselage
interior can be made completely
accessible quickly. Daily cleaning of the
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