TM 55-2840-254-23
1-85
1-85 INSPECT CONTAMINATED FUEL SYSTEM (Continued)
n. Service fuel control filters and strainers
(Ref. Task 1-101).
NOTE
If any filters inspected in previous steps were
contaminated, or if differential pressure
indicator has popped, a bypass may have
occurred.
o. If filters are contaminated and bypass may
have occurred; perform the following:
p. Check fuel tanks and supply lines for
contamination (Ref. TM 55-1520-240-T or
TM 55-4920-328-13).
q. Service fuel tanks with dean fuel (Ref. TM
55-1520-24023 or TM 55-4920-32813).
r. Perform initial check run (Ref. TM 55-1520
240-10 or Task 1-107), and repeat steps la.
thru 1n.
2. If contamination still exists and bypass
indicators actuated, repeat step 1a. thru 1n.,
and perform initial check run (Ref. TM 55-
1520-240-10 or Task 1-107).
3. If contamination still exists and bypass
indicators actuated, determine and replace
the defective components that are
generating the contamination. Service/flush
any components downstream of defective
component that may have been
contaminated and repeat initial check run,
step r.
INSPECT
FOLLOW-ON MAINTENANCE:
None
END OF TASK
1-262
