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Figure 4-5. Defueling Unisex Coupling Assembly | Up
TM-10-4330-237-13P Filter-Separator Water Liquid Fuel for Advanced Aviation Forwarded Area Refueling System (AAFARS) Model E72FS-Z001 Manual | Next
4.9 REPLACE DEFUELING COUPLING ASSEMBLY. |
TM 10-4330-237-13&P
b. Installation.
NOTE
When inserting balls in unisex coupling ball race, use caution to avoid dropping
loose balls. Work over a wiping rag.
(1)
Lightly lubricate outside O-ring (6) with petrolatum and install in second (square) groove (10) of inlet (5).
(2)
Lightly lubricate inside O-ring (8) with petrolatum and install inside inlet (5).
(3)
Place springs (9) in inlet (5).
(4)
Install nylon seal (7) over inside O-ring (8) in inlet (5).
NOTE
Assembly of the unisex coupling on to the inlet requires two persons, one to hold
the unisex coupling on the inlet against spring pressure and one to insert the balls.
Alternatively, one person can perform the task if the unisex coupling is pressed
against some object heavy enough to compress and hold the inlet springs while
the balls are inserted in the race.
(5)
Slide the unisex coupling (3) onto the inlet (5). Hold coupling over a wiping rag with screw hole facing up and
adjust position until ball race (rounded groove) (11) is centered under screw hole. Install balls (4) one at a time,
rotating unisex coupling (3) back and forth until all 41 balls (4) have been inserted.
(6)
Install ball retaining screw (1) and O-ring (2) in unisex coupling (3). Tighten retaining screw.
Refer to figure 4-1.
(7)
Close manual vent valve (4) on filter vessel (3).
(8)
Replace grounding cable (1) in storage location.
4-13
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