Engine-Driven Fuel Pump; Fuel Filter - Thrush Aircraft S2R–T660 Maintenance Manual

THRUSH AIRCRAFT INC – T660 TURBO THRUSH AIRCRAFT MAINTENANCE MANUAL

ENGINE-DRIVEN FUEL PUMP

The engine-driven fuel pump installed on the lower right rear portion of the engine is provided with a
relief valve that will allow fuel to pass through from the airframe pump to the engine in the event of
pump failure.

FUEL FILTER

The fuel strainer in the filter should be removed, inspected and cleaned every 100 hours of
operation or sooner if improper fuel circulation is suspected. (See Figure 5-1 and 5-2 fuel filter.)
AIRBORNE 1J18 FUEL FILTER SERVICE INSTRUCTIONS
The following procedures must be followed in the order of
steps given to avoid damage to the components and to assure
proper functioning of the unit.
Refer to illustration (Fig 5-2) for identification of parts during disassembly and re-assembly.
A. Turn airframe fuel shutoff valve to "OFF" position. Cut, remove and discard safety wire (not
shown) securing filter bowl assembly.
B. Using 13/16" wrench unscrew hex nut, (Item 1) bowl retainer.
C. Pull filter bowl (Item 2) straight off filter housing stud.
D. Using one thin ½" open end wrench, hold filter retaining nut (Item 3) while loosening jam nut
(Item 4) with second ½" wrench.
DO NOT twist or bend stud. Stud is not a removable item.
DO NOT pry on filter element.
E. Remove retaining and jam nuts (Items 3 and 4).
F. Filter element (Item 5) will now drop off stud.
5 -7
** CAUTION **
** CAUTION **
Effective: 12/17/03
hand threads.)
(Right