Transmission clutch push rod length (4 speed)

Common clutch push rod

The length of the clutch push rod used on 4 speed transmissions is (MG# 12085701) is 228 mm.

Clutch push rod (Original)

There was also a very early clutch push rod that utilized a single ball as the bearing between the end of the clutch push rod and the inner body (MG# 12085700).

Thanks to Piotr Sawiak for providing the following information on this very early clutch push rod.

The length of this clutch push rod is 223 mm. The ball I had was 4.7 mm diameter, but it should be 5 mm I think.

Sidenote: While this variation of the clutch push rod assembly is shown in the very earliest spare parts catalog, Charlie Mullendore is doubtful that it ever saw production. Instead Charlie suspects that examples through the years may have been modified by previous owners.

Clutch push rod (Revision 1)

Thanks to Charlie Mullendore of Antietam Classic Cycle for sending me this information and photos.

Very early. 20 mm bore. Five balls in a brass/bronze retainer. Pushrod is 228 mm, a reduced diameter for half of its length.

Clutch push rod (Revision 2)

Thanks to Charlie Mullendore of Antietam Classic Cycle for sending me this information and photos.

20 mm bore. Six balls in stamped steel cage. Pushrod is still 228 mm, same diameter for the entire length.

Clutch push rod (Revision 3)

Thanks to Charlie Mullendore of Antietam Classic Cycle for sending me this information and photos.

22 mm bore. Needle roller thrust bearing. Pushrod is still 228 mm, same diameter for the entire length.