TM 10-4630-207-13&P
0019 00
2. Wing Nut Assembly.
a. Loosen wing nut assembly (figure 6, item 1) to be replaced and move it off the portal lid (figure 6,
item 2).
b. Using a 5/32inch punch (figure 6, item 3), remove the lock pin (figure 6, item 4) from the wing nut
assembly hinge pin (figure 6, item 5).
Remove the hinge pin (figure 6, item 5) from the portal lid collar bracket (figure 6, item 6) and
c.
wing nut assembly eyebolt (figure 6, item 7).
d. Position new wing nut assembly eyebolt (figure 6, item 7) into the portal lid collar bracket (figure
6, item 6) and insert hinge pin (figure 6, item 5) through the bracket and eyebolt.
e. Install the lock pin (figure 6, item 4) into hinge pin (figure 6, item 5). Place wing nut assembly
(figure 6, item 1) onto portal lid (figure 6, item 2) and tighten.
3
1
4
7
5
2
3
6
5
4
Figure 6. Replacing Wing Nut Assembly
3. Primary Shutoff Mechanism.
a. Remove the primary shutoff portal lid and isolation valve assembly from the tank as described
under SERVICE in this WP.
b. Remove hex bolts, hex nuts and lock washers (figure 7, item 1) from the three cage lid mounting
brackets (figure 7, item 2).
Remove basket (figure 7, item 3) from portal lid (figure 7, item 4).
c.
d. Remove float ball (figure 7, item 5) from shutoff seat (figure 7, item 6).
0019 00-5
