4-78. VAPOR COLLECTION SYSTEM MAINTENANCE (Con't).
b. INSTALLATION OF VAPOR RETURN LINE AND ADAPTER
Use extreme caution when working or walking on top of semitrailer.
Walkway can become slippery due to moisture or fuel spillage. Failure to
follow this warning may result in serious injury to personnel.
Connect hose (12) to line at overturn rail (10) with retaining strap (13).
Position vapor return line (6) with end inserted into hose (12). Loosely install vapor return line
to two support brackets (3) with two U-bolts (8), four washers (4), new lockwashers (7), and
Connect vapor return line (6) to hose (12) and fully tighten retaining strap (11).
Fully tighten four nuts (5) at two U-bolts (8).
Install new gasket (9) to dust cap (1), if removed.
Install adapter (2) and dust cap (1) to vapor return line (6).
If removed, cut a length of cable and install through loops in dust cap (1) and adapter (2).
Secure with two crimped sleeves.