Threshold Spring; Multifunction Block - Danfoss 51 Series Service Manual

Bent axis motors two position controls

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Service Manual

Operation

Series 51 Two Position Controls Service Manual

Threshold Spring

A threshold spring acts on the opposite end of the 4-way valve. Adjusting the threshold screw changes

the pressure required to move the 4-way valve and start the change in displacement.

Optional orifices may be installed at several locations to regulate shift speed. Refer to the model code for

your motor for details.

Threshold and ramp springs

Threshold

adjusting

screw

Threshold spring

Some controls are used in conjunction with a multifunction block. The purpose of the multifunction

block is to route high loop (system) pressure from port A or B to the 4-way valve for servo supply

pressure, and to direct low loop pressure from port A or B to the control for pilot pressure. The spool that

11009442 • Rev CA • January 2015

Lock nut

For T* controls

PCOR

adjusting

screw

4-way

valve

P107 856E

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