Overview
Operation Manual -
All SP Rock Valve Models38
revDate
Phase B
The differential cylinders have reached the end of their
stroke position*. Switching valve (5) is sending a high
pressure signal to the left hand end cap of S3 valve (3).
Oil from the right hand end cap of the S3 valve (3) is
relieved via check valve (15), the S2 valve (2), S1 valve
(1), filter (7) and back to the hydraulic tank.
NOTE!
If the left hand differential has not fully
extended at this point due to not enough
loop oil, high pressure oil will continue to
flow through check valve (17) on the right
hand differential until the left hand
differential is fully extended.
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