Table 1. Operator's Preventive Maintenance Checks and Services for Drum (Continued)
Item To Be
Coupler valve installed onto drum.
Check both coupler valves for:
Proper locking and unlocking operation of cam arm assemblies
assemblies (1) will
Leaks where coupler valve connects to adapter assembly (2).
not lock properly.
Leaks at coupler valve outlet when coupler valve is shut off.
Leaks at or around valve stem (3) and packing nut (4).
Check adapter assemblies (1) on both ends of drum for looseness
(1) leaks or is loose.