(4) Connect suction line tee (7) to water pump (para. 123).
(5) Position rubber connector between upper and lower pipe (3) and install hose clamps.
111. Discharge Line
a. Removal.
(1) Remove the hose clamps (17) between the upper discharge line (24) and the lower discharge line
(28).
(2) Unscrew lower pipe (23) from tee (20).
(3) Loosen hose clamps (9, fig. 34) securing rubber connectors to right and leftspraybar valve pipes 6
(4) Loosen hose clamp (17, fig. 33) securing rubber connector (16) to discharge valve pipe (18) and
water tank outlet (15).
(5) Remove the four nuts and lockwashers securing U-bolts to lower discharge line and remove lower
discharge line.
b. Disassembly.
(1) Unscrew the pipes (6 and 7, fig. 34) from the right and leftspraybar valves (5).
(2) Unscrew the right and left spraybar valves (5) from the close nipples (4) leading to the spraybar line
tee (2).
(3) Unscrew the bushings (3) from thespraybar tee.
(4) Unscrew the spraybar line tee (2, fig.34) from the discharge line tee close nipple (19, fig. 33).
(5) Unscrew the close nipple (19) from the lower discharge line tee (20). Unscrew the discharge line
tee from the nipple (19) leading to the discharge valve (22).
(6) Unscrew the pipe (18) from the discharge valve (22).
(7) Unscrew the close nipple (19) from the discharge valve.
(8) Remove water discharge pressure gage (31).
(9) Unscrew pipe (24) from discharge elbow (25).
(10) Unscrew discharge elbow from nipple (26).
(11) Unscrew nipple (26) from water pump elbow (25).
(12) Unscrew water pump elbow and close nipple (19) from discharge line reducer (33).
c. Cleaning, Inspection, and Repair.
(1) Clean all piping in an approved cleaning solvent.
(2) Clean all pipe threads with a wire brush.
(3) Inspect piping, elbow and valves for cracks, breaks, corrosion or damaged threads. Replace as
necessary.
(4) Inspect hose clamps and rubber connectors for damage or deterioration. Replace as necessary.
d. Assembly.
Note. Be sure to coat all pipe threads with sealing compound before installing piping.
(1) Screw close nipple (19, fig. 33) into discharge valve (22).
(2) Screw pipe (18) into discharge valve.
(3) Screw discharge line tee (20) onto nipple leading from discharge valve (22).
(4) Screw spraybar line tee (21) and close nipple (19) into lower discharge line tee (20).
(5) Screw pipe (23) into discharge line tee (20).
(6) Screw right and left spraybar valves (5, fig. 34) to space nipples (4) leading from a discharge line
tee.
(7) Screw water pump tee (27, fig. 33) and close nipple (19) into discharge line reducer (33).
(8) Screw nipple (26) into water pump elbow.
(9) Screw discharge elbow (25) onto nipple pipe (26).
(10) Screw pipe (24) leading from discharge elbow (25) to lower discharge line into discharge elbow
(25).
e. Installation.
(1) Slide lower discharge line between carrier rear frame rails.
AGO 6871A
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