TM 55-1905-217-34
Figure 4-34. Steering system double over center value, cross-section view.
e. Steering Unit Valves, Disassembly and Repair-Hulls 8520-8560 and 8580-8619.
Refer to figures 4-35, 4-36, and 4-37 for disassembly and repair of the valves on these vessels.
4-51