On Thu, 24 Sep 2009 08:15:36 -0400, Van Chocstraw
wrote:

wrote:

A Case 222 is NOT HYDROSTATIC. It's full hydraulic. There is no wet
clutch in a Case.

Huh? It is a close loop hydraulic system. That is what defines
a hydrostatic circuit.

It doesn't need a clutch. It's hydrostatic!

The closed loop system needs to be controlled and reversed by an
external mechanical system.

By simply rotating the swash plate shaft like all hydrostatic drives.


Often, a hydrostatic transmission is combined with a planetary gearset
and clutches to create a hybrid system known as a hydromechanical
transmission. Hydromechanical transmissions transfer power from the
engine to the wheels in three different modes. At a low speed, power is
transmitted hydraulically, and at a high speed, power is transmitted
mechanically. Between these extremes, the transmission uses both
hydraulic and mechanical means to transfer power. Hydromechanical
transmissions are ideal for heavy-duty applications, which is why they
are common in agricultural tractors and all-terrain vehicles.

This is NOT how a Case works.

The Case 222 is a hydrostatic drive with a sizable charge pump to
run accessories.