Secondary suspension
AssemblyThe second suspension stage between the bolster and the frame, using air springs and dampers to isolate the carbody and hold ride height as passenger load changes. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Secondary suspension
8 top-level lines as of r16039| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Air spring | bg-air-spring | 2× | 2 | · | part |
| 2 | Bolster spring | bg-bolster-spring | 4× | 4 | · | part |
| 3 | Lateral damper | bg-lateral-damper | 2× | 2 | · | part |
| 4 | Vertical damper | bg-vertical-damper | 4× | 4 | · | part |
| 5 | Traction rod | bg-traction-rod | 2× | 2 | · | part |
| 6 | Anti-roll bar | bg-anti-roll-bar | 1× | 1 | · | part |
| 7 | Levelling valve | bg-levelling-valve | 2× | 2 | · | part |
| 8 | Fastener Set | fastener-set | 1× | 1 | · | part |