Case 580SR Service Manual page 139

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SECTION 21 - TRANSMISSION 73
DIRECTION CONTROL VALVE DISASSEMBLY
AND ASSEMBLY
Disassembly of the control valve is not generally rec-
ommended as, with the exception of the solenoids,
individual parts are non serviceable. It may however
be dismantled for cleaning and examination.
The valve fitted may be either the modulated type or
the non-modulated type.
The retaining nut, coil and washer removed.
The modulation components removed.
There are 4 O-rings fitted to the underside of the
valve which may be renewed if necessary.