There are two end play specifications on the 400. The rear section which includes both planetary units and the sprag and roller clutches is positioned by the intermediate clutch hardware, which is locked into the case by the snap ring I was referring to earlier in this post. That end play is adjusted with a selective-thickness snap ring, which should cure any apparent slop in the output shaft. Once the front and rear clutch assemblies are installed, a thrust washer incorporated into the pump assembly sets end play for the front section.

This differs from the Turbo 200, which adjusts end play with a single thrust washer. The 400 was designed and built long before the baby chick engineering folks got involved in transmission design ("CHEEP- - - -CHEEP- - - - -CHEEP!")
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!