Union Pacific 3900 Series 4-6-6-4 Challenger drawings, engine only- Erecting Diagram – Engine – Sections (3,4)
		SKU/Drawing Number: 424-CA-29801
			| Scale to 1 ft.: | 1 1/2” | 
| Wheel Arrangement: | 4-6-6-4 | 
| DWG. Size (in): | 30x114 | 
| Drawing Title: | Erecting Diagram – Engine – Sections (3,4) |