TM 5-5420-226-20-2
FUEL-WATER SEPARATOR OPERATIONAL TESTS (Sheet 2 of 11)
Manual Drain Test (Sheet 1 of 2)
NOTE
In order to perform any of the tests in this proce-
dure, they must be performed in the sequence
listed.
Place drip pan under fuel-water separator (A) and sensor probes (B) and (C).
1.
Using 1/2 inch socket and extension, remove three capscrews, lock-
2.
washers, and flat washers (D).
Using hands, remove clamp (E) from sensor probe
3.
wires (B) and (C).
4.
Using 1/2 inch socket and extension, loosen
capscrew (F) to provide movement of fuel-water
separator.
NOTE
It may be necessary to use hammer and punch to
unseat sensors (B) and (C) by tapping upward
on the edge of the sensor retaining nut.
Using 1/2 inch wrench to hold sensor retaining
5.
nut (G)j use 9/16 inch wrench and remove upper
sensor (B) from fuel-water separator.
Check to see if fluid level .is above upper sensor probe (B) hole by noting leakage
6.
when upper sensor probe (B) is removed.
Using adjustable wrench, install pipe plug into upper sensor probe (B) hole.
7.
Using 1/2 inch wrench to hold sensor retaining nut (H), use 9/16 inch wrench and
8.
remove lower sensor (C) from fuel-water separator.
Using adjustable wrench, install pipe plug into lower sensor probe (C) hole.
9.
CAUTION
Be very careful not to disturb center filter element. .
The center filter element must be replaced if disturbed
TA107838
Go on to Sheet 3
in any way.
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