Home > Parts Breakdowns > Challenger Lift Parts > Challenger 2 Post Lift Model Breakdowns > Challenger 37000 & 39000 Steel Line Version Older Parts Back Challenger 37000 & 39000 Steel Line Version Older Parts 37000 & 39000 Carriage Arm Assembly 37000 & 39000 Hydraulic System 37000 & 39000 Overhead Assembly 37000 & 39000 Pnuematic Lock Release System 37000 & 39000 Synchronization System