Figure 1. Primary Shutoff Linkage and Upper Air Hose Clamp Removal
4. Loosen primary hatch cover (figure 2, item 1) wing nut assemblies (figure 2, item 2) enough to move
The primary shutoff portal lid and isolation valve assembly is heavy (40 lbs).
To prevent injuries, two people are required to remove it from the trailer.
For equipment located in CONUS, use only a certified, new replacement cover to
retain DOT certification of the WWET/T.
5. Using two people, remove the portal lid and isolation valve assembly (figure 2, item 3) from the trailer.