Boom Assembly
AssemblyThe lightweight arm that physically blocks the roadway, balanced by counterweights so the drive only works against friction and wind. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Boom Assembly
6 top-level lines as of r98060| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Boom Arm | level-crossing-barrier-boom-arm | 1× | 1 | · | part |
| 2 | Boom Lamp | level-crossing-barrier-boom-light | 3× | 3 | · | part |
| 3 | Counterweight | level-crossing-barrier-counterweight | 2× | 2 | · | part |
| 4 | Breakaway Coupling | level-crossing-barrier-breakaway-coupling | 1× | 1 | · | part |
| 5 | Boom Skirt | level-crossing-barrier-skirt | 1× | 1 | · | part |
| 6 | Fastener Set | fastener-set | 2× | 2 | · | part |