TM 5-3805-262-34
TRANSMISSION THEORY OF OPERATION (CONT)
Oil Flow with Shifting Spool in Low and Clutch Cutout Actuated. Shifting spool is
pulled out of body of transmission control valve. Left brake pedal is applied which
actuates clutch cutout.
When left brake pedal is applied, clutch cutout cylinder pushes in spool in clutch
cutout valve. Spool closes main pressure passage and oil stops flowing in main pres-
sure circuit. Other end of spool stops flow of oil in trimmer circuit. Oil at right
side of trimmer plug is held in place by spool. Bottom part of trimmer circuit is
opened to oil sump. Oil can then flow from low clutch through bottom part of trimmer
circuit to oil sump. When oil is drained from low clutch, low clutch releases.
Remainder of components in transmission operate same as described above in Oil Flow
in Neutral.
4-92
