ChamberMaster Template Swains Spring Service Truck/Trailers - Sales / Service / Parts Swains Spring Service 3257 Vaughn Rd Great Falls, Montana 59404 (406) 452-1246 About About Since 1885, Swains Spring Service has provided leaf spring repairs from horse buggies to trucks and trailers of all kinds. Bearing packs, axle alignment & U-bolts. Specialty fabrication work.