THRUSH AIRCRAFT, INC – MODEL S2R-R1340
AIRCRAFT MAINTENANCE MANUAL
2-12
Effective 01/01/08
Visually check that all drain
valves are closed after draining.
FUEL SYSTEM SCREENS:
(Ref. Fig. 2-
2) The airframe is equipped with five fuel
screens: 1/12 inch mesh finger strainers
in each wing tank outlet and a ¼ inch
mesh finger strainer installed in the outlet
fitting from the header tank. Inspect the
finger strainers annually or if the fuel
system is thought to have been or is
known to be contaminated with foreign
debris: i.e. moisture, debris or other
contaminants are noted in drained fuel
sample container, fuel source is known to
be contaminated etc.
FIREWALL MOUNTED FUEL FILTER:
(Ref. Fig. 2-2) The main fuel filter screen
should be inspected, cleaned and
reinstalled every 100 hours, or any time
fuel system contamination is suspected.
Refer to Section 5 for main fuel filter
servicing procedures.
DEFUELING
Aviation gasoline is extremely
volatile and the vapors are
very explosive in heavy
concentrations. Smoking on
or around the aircraft is not
permitted at any time.
Aircraft and equipment
grounding procedures must
be strictly adhered to. Fire
extinguishing equipment must
be immediately available.
a. Ground aircraft to a proper ground
point and all ground defueling
equipment or containers to the aircraft.
b. Place a vented container of adequate
capacity under each of the three drain
points. Verify that the containers are
properly grounded to the aircraft.
c. Open the drain valves and allow all
fuel to drain. When tanks are empty,
close the drain valves and move the
fuel containers a safe distance from
the aircraft.
d. Verify that all the drain valves are
closed.
e. Refer to Section 4 for applicability of
carburetor presoaking and fuel line
purging after defueling.
LANDING GEAR, WHEELS &
BRAKES
Reference Section 6
Check all gear assemblies for general
cleanliness, security of mounting, and
hydraulic leaks at prescribed inspection
intervals. Lubricate all lubrication points on
main and tail gear assemblies at
prescribed intervals.
TIRES
Tires should be inspected for proper
inflation, breaks, cuts, and foreign objects
in tread, flat spots and exposed cord.
Replace tire if there is any question of its
reliability. Proper inflation is necessary for
maximum tire life. Maintain 29x11-10 ply
rated main tire and tube pressure at a
minimum of 40 psi to a maximum of 62 psi,
depending on the load and runway
conditions. The 12.5 x 4.5-10 ply rated tail
wheel tire and tube pressure should be 55
psi maximum. The wheels and tires are
balanced assemblies. If tires are
suspected of being out of balance, they
may be balanced on automotive type
balancing equipment. If aircraft is out of
service, move the aircraft to rotate tires
every seven days to prevent flat spots from
developing.
MLG SHOCK STRUTS
Main landing gear shock struts are to be
inspected at the specified intervals. At
least annually they must be removed from
the aircraft, disassembled, cleaned and
inspected. Shock “biscuits” should be
replaced every 1000 hours or if they
WARNING
CAUTION
