how my auto teacher explained it, its like the old slave times, hence the name. the master is the controling cylinder, forcing fluid out to move the slave cylinder, doin the work. another example is the brakes, except the brakes have four slave cylinders.

formerly 277000_yota
Old enough to know better, but still to damn arrogant to care...
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'90 'Yota 4X4 (10/31/05-09/10/08 R.I.P)
'98 'Yota t-100. 3.4, 5 sp. 4x4, 2 in. Toytec with BFG A/T 265/70R16s