Control valve devices for automatic transmissions

An automatic transmission, comprising:

• a casing, said casing having an outer peripheral face and being formed with a recess, said recess having a fixing face;
• a valve assembly, said valve assembly including a body arranged in said recess of said casing and on said fixing face of said recess, said valve assembly producing a control pressure for automatic shifting, wherein when said body of said valve assembly is arranged in said recess of said casing, a space between an outer periphery of said body of said valve assembly and an inner periphery of said recess of said casing is too narrow to allow finger insertion;
• and
• protrusions arranged at said outer periphery of said body of said valve assembly, said protrusions being located outside with respect to said outer peripheral face of said casing, said protrusions being parallel to said fixing face of said recess of said casing, said protrusions being manually engageable to hold said valve assembly, wherein when said body of said valve assembly is disposed on said fixing face of said recess of said casing, a space allowing finger insertion is defined between the outer most surface of said outer peripheral face of said casing adjacent to the recess and each of said protrusions, and wherein when said valve assembly is arranged in said recess of said casing it is held in position by fasteners which do not engage said protrusions.