TM 5-3805-262-343-22. CONTROL VALVE ASSEMBLY MAINTENANCE (CONT)THEORY OF OPERATION (CONT)Oil Flow with Lift Spool in Float.In this example, lift spool is moved all the wayinto control valve assembly. Lift spool connects A port and B port through hollowcenter of lift spool. When loader bucket is on the ground, bucket will follow groundshape and oil will move between ends of lift cylinders as needed.Lift spool in float has no effect on oil flow through control valve assembly.3-644
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