TM 55-2840-231-23
6-27.4. Inspection of Engine Fuel Pump Filter Bypass Valve for Proper Operation - Continued
ENGINE/
Fuel Pump Filter Bypass
Valve Inspection - Contin-
ued
Replace both fuel filter o-rings when
reusing same filter.
6-27.5. Correction Procedures for Engine Fuel Pump Filter Bypass Valve.
INITIAL SETUP
Applicable Configuration
All
ENGINE/
Fuel Pump Filter Bypass
Valve Correction Procedures
a. If fuel pump failed
bypass test in para-
graph 6-27.4, items (6)
or (8), then clean as
follows:
(1) Remove fuel
pump in accordance
with paragraph 6-15.
(2) Remove fuel
filter in accordance
with paragraph 6-27.
(a) Cut and re-
move lockwire retain-
ing filter bypass plug
in the pump housing,
reference TM
55-2840-231-23P, fig-
ure 13, item 9.
(b) Unscrew and
remove plug, item 9.
(c) Remove
spring, item 11, piston,
item 13, and sleeve,
item 14.
Change 13 6-68.7
