TB 5-4220-200-12-1
(23) With a 1/2 inch open wrench, unscrew and remove the reserve safety plug screw (27). With tool
1588-13, remove the safety disc (28). and the reserve elbow safety washer (29).
(24) Place the tank in a tank vise. With a (narrow) 1-1/4 inch open end wrench, unscrew and remove the
reserve elbow (30). Remove the tank from the vise.
(25) Remove the reserve elbow O-Ring (26).
(26) Place the other tank in a tank vise.
(27) With a 1/2 inch open end wrench, unscrew and remove the safety plug screw (1).
(28) With tool 1588-13, remove the safety disc (2) and the safety disc washer (3).
(29) With a (narrow) 1-1/4 inch open end wrench, unscrew and remove the elbow (5) from the tank. Re-
move the tank from the vise.
(30) Remove the elbow O-Ring (4).
NOTE
This completes the tank block manifold disassembly. Proceed to paragraphs 4-7
and 4-8 for cleaning, inspection, and lubrication of parts.
b.
Tank Block Manifold Reassembly.
NOTE
If the safety discs (fig. 4-3) (2) and (28) and the safety washers (3) and (29) were
removed, replace both items with new ones.
Insert and seat the safety disc washer (3), then the safety disc (2) into elbow (5).
(1)
Screw safety plug (1) into elbow (5).
(2)
Repeat steps (1) and (2) for the reserve elbow (30), for the installation of parts (27) through (29).
(3)
Place the elbow O-Ring (4) on the threaded end of the elbow (5) that connects to the tank.
(4)
Place one of the tanks in a tank vise. Screw elbow (5) into the tank and tighten hand tight. Remove
(5)
the tank from the tank vise.
Position the reserve elbow (30) in a soft jaw vise with the externally threaded opening pointing up-
(6)
ward.
Insert the disc and retainer washer (24) on the longest stem of the disc and retainer (25). With needle
(7)
nose pliers, insert and seat the disc and retainer (25) inside the externally threaded end of the reserve
elbow (30).
Place the insert washer (22) inside the reserve elbow (30) so it seats on the ledge.
(8)
Place the insert spring (23) inside the reserve elbow.
(9)
(10) Place reserve elbow insert (21) so the concave section is pointing upward. With a 7/32 inch allen
wrench tighten the reserve elbow insert securely.
(11) Position the reserve elbow (30) in a soft jaw vise so the end without external threading is pointing
upward.
(12) Insert the pin and plunger spring (31).
(13) Insert the pin and plunger (32). Insure that the protruding guides on the side of the pin and plunger
fit into the vertical grooves.
(14) Place the reserve bonnet (37) on a flat surface with the threaded opening facing upward.
(15) Insert the reserve back-up ring (36) and insure proper seating.
4-21
