TM 9-2330-384-14&P
4-72. PRECHECK SYSTEM MAINTENANCE (Con't).
CAUTION
Use caution when releasing tubing (3
and 4) from under clips (5). Clips
should be lifted gently and only
enough to release tubing. Improper
handling of clips will cause them to
break.
(2)
Release tubing (3 and 4) from un-
der clips (5). Place a suitable
drain pan under precheck valve
(8) and tubing. Loosen nuts (6)
and disconnect tubing from two
elbows (7). Dispose of any
drained fuel in accordance with
local policy. Ensure that any
spilled fuel is wiped up.
(3)
Remove two elbows (7) from pre-
check valve (8).
b. INSTALLATION OF PRECHECK VALVE
NOTE
All male threads of elbows (7) should be coated with antiseize tape if not
already factory-coated with an antiseize compound.
Install two elbows (7) to precheck valve (8).
(1)
Connect tubing (3 and 4) to elbows (7) and tighten nuts (6).
(2)
Install precheck valve (8) to shelf of cabinet (11) with two washers (1), screws (2) new
(3)
CAUTION
Use caution when securing tubing (3 and 4) under clips (5). Improper handl-
ing of clips will cause them to break.
Secure tubing (3 and 4) with clips (5). Use a soft-faced hammer to gently tap clips back into
(4)
position.
c. REMOVAL OF PRESSURE GAGE
(1)
Place a suitable drain pan under elbow (16). Loosen nut (15) and disconnect tubing (14) from
elbow. Dispose of any drained fuel in accordance with local policy. Ensure that any spilled fuel
is wiped up.
4-226