Rotator Maintenance
Section 6 Page 9
MSD SABER SERIES SHEARS
FIGURE 6-5
INTERNAL ROTATION CONTROL SYSTEM
if equipped
The optional Internal Rotation Control System is designed to provide a medium pressure, low-fl ow hydraulic
power source for rotating the shear. The system is factory installed inside the rotating head of the shear and
consists of the following major components: Accumulator, accumulator control valve assembly, and foot switch.
The circuit taps into the shear’s hydraulic supply manifolds to draw only enough fl uid to charge the accumula-
tor. This fl uid is held in reserve until the control valve is actuated, which sends the fl uid to the rotation motor
to drive the rotator. The diagram below,
Figure 6-5
, represents a typical Internal Rotation Control System. The
layout of the system that has been installed in your shear may vary slightly, but the main components among
shear models are generally the same.
RETURN
LINE
HYDRAULIC
MANIFOLD
(2 PLACES)
ACCUMULATOR
SUPPLY LINES
CASE
DRAIN
ELECTRICAL PLUG
ELECTRICAL CORD
ELECTRICAL SUPPLY
RETURN LINE
FOOT SWITCH
TO ROTATION MOTOR
ACCUMULATOR LINE
ACCUMULATOR
CONTROL VALVE
ASSEMBLY
