TM 5-3805-254-20-2
DOUBLE CHECK VALVE - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
REMOVAL
WARNING
Safety goggles must be worn when working under truck to prevent eye injury.
1.
Fitting (1)
Line nut (2) and
a.
Using two 3/4-inch open-end wrenches,
air hose (3)
unscrew, and take off.
b.
Move air hose out of way.
2.
Double check valve (4)
Fitting (1)
Using 3/4-inch open-end wrench, unscrew, and take
off.
3.
Nut (5), lockwasher
a.
Using 7/16-inch open-end wrench and 7/16-inch
(6), and screw (7)
box-end wrench, unscrew, and take off.
b.
Get rid of lockwasher.
4.
Left frame rail (8)
Double check valve
Take off.
(4)
INSTALLATION
CAUTION
Antiseizing tape must be used on all pipe threads to provide a good seal and to prevent threaded parts
from seizing.
NOTE
For more information on how to use antiseizing tape, go to General Maintenance Instructions (page 2-
424).
5.
Left frame rail (8)
Double check valve
Put in place.
(4)
6.
Double check valve
Nut (5), lockwasher
Screw in and tighten using 7/16-inch box-end wrench
(4)
(6), and screw (7)
and 7/16-inch open-end wrench.
7.
Fitting (1)
a.
Wrap pipe threads with antiseizing tape.
b.
Screw in and tighten using 3/4-inch open-end
wrench.
8.
Fitting (1)
Line nut (2)
Screw on and tighten using two 3/4-inch open-end
and air hose (3)
wrenches.
Change 1 2-1148.2
