D: Engine Fuel System; E: Air Induction System - Thrush Aircraft S2R-R1340 Maintenance Manual

C: ENGINE OIL SYSTEM
Remove all sump plugs and examine cavity for
metal particles. Metal particles found in a new
engine installation do not necessarily mean
trouble, but should be investigated anyway. If no
problems are found, change oil and ground test
6.
the engine.
older engine starts producing them, an engine
change may be warranted. If this is the case, the
oil cooler should also be changed and the oil tank
and all oil lines and hoses should be cleaned.
Remove, inspect, clean, and reinstall engine
7.
scavenge oil strainer.
8.
Oil change recommended every 50 hours (except
9.
for initial ground run. See pg. 4-10). Refer to
Section 4 for applicability of engine pre-oiling.

D: ENGINE FUEL SYSTEM

Remove, clean and reinstall finger strainer in
1.
carburetor.
2. Check the carburetor for security and linkages.
3. Check the primer lines for leaks and security.
4. Check the inlet manifolds for cracks and security.
Check fuel pump seals by watching overboard
5.
drains during engine run-up.

E: AIR INDUCTION SYSTEM

Inspect the backfire flapper on the bottom of the
air filter for free motion and strong spring closure.
1.
Check condition of leather seal on flapper and
replace if necessary.
Check the air induction duct from the air filter to
2. the carburetor alternate air box for cracks, leaks
and security
Effective: 01/01/08
THRUSH AIRCRAFT, INC – MODEL S2R-R1340
AIRCRAFT MAINTENANCE MANUAL
(Continued)
Persistent metal particles or if an
Check the oil level.
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