TM 9-2350-256-20
b. INSTALLATION
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CAUTION
Use of replacement filters other than those specified in TM 9-2350-256-20P will cause damage to the
APU engine.
1
Install ID plate (19) with four new rivets (20).
NOTE
When replacing fuel filters (15 and 16),
remove plug from bottom of new filter and
install dram cock (12) from old filter.
Install primary fuel filter (15) and secondary fuel
filter (16) each with one screw (17) and one new
flat washer (18).
Install APU engine fuel filters and fittings (11) with
three screws (13) and three new lockwashers (14).
Connect fuel line (2) on primary fuel filter (15) and
fuel line (8) on secondary fuel filter (16).
Install U-bolt (7) over fuel line (8) with two new
lockwashers (10) and two nuts (9).
Install clamp (1) over fuel line (2) with screw (6), flat washer (5), new lockwasher (4), and nut (3).
Bleed fuel system after installation of fuel filters.
Disconnect fuel return line (21)
(22).
at return line fitting
NOTE
If pump lobe of camshaft is up, crank
engine one revolution to permit hand
priming.
Operate priming lever (23) on fuel transfer pump
(24) until no oil bubbles appear in fluid flowing
from return line fitting (22).
Connect fuel return line (21) to return line fitting
(22).
Return priming lever (23) to disengaged position for normal operation.
NOTE
Follow-on maintenance:
Close left front air inlet grille doors (see paragraph 9-57)
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