Hydraulic Leveling Systems
ML37940 - Series/Parallel electrical operation of solenoid valves on 625 and 625 single step leveling systems.
Air Leveling Systems
ML20635 - Air Leveling Textbook
Room Extension Systems
ML37939 - Regenerative Cylinders. The discussion of how a regenerative hydraulic circuit works.
ML37955 - Synchronizing Cylinders. The discussion of how a synchronizing cylinder works.
ML39247 - Synchronizing procedures for the set up or repair of room extensions with sync cylinders.
HH95308 - Power point presentation of fluid flow through an HWH dual cylinder room extension mechanism with a synchronizing cylinder.
Non-Specific Hydraulic Information
ML37965 - Hydraulic fluid flow and pressure theory.
Non-Specific Electrical Information
ML40838 - The effects of corrosion and wire lengths on electrical circuits.
System Schematics
ULO - Universal Level Out Room Extensions
MP90007A-G - Electrical Schematics - 4 rooms
MP69966 - Hydraulic Connection Diagram - 3 rooms
MP69886 - Hydraulic Connection Diagram - 4 rooms
AP38264 - Sync Cylinder 2.121 x 0.880
AP37881 - Sync Cylinder 2.121 x 10.540
AP38066 - Locking End Cap Assy
AP38945 - 2 Cylinder Diagram - ULO
