Operation - wsm M7060 Workshop Manual

M6060, M7060, WSM

(2) Operation

Tractor Brake Released
The tractor service brake line X is pressureless. The
brake line B is relieved to the reservoir through the
control spool (2) and port R.
The delivery flow Qp of the pump flows from port P
past flow control valve (10), the flow Qp - Qx continues
through port N to the tractor hydraulics.
A small control oil flow Qx of approx. 0.6 L/min.
passes from port P to the reservoir through restrictor
(11), throttle (9), bore (8), control spool (2), and port R.
Thus the pressure drop at throttle (9) holds the flow
control valve (10) in the open flow position a. The flow
control valve (10) has no regulating function.
(1) Piston Surface
(2) Control Spool
(3) Pressure Relief Element
(4) Spring
(5) Bleed Valve
(6) Control Head
(7) Piston
(8) Bore
(9) Throttle
(10) Flow Control Valve
(11) Restrictor
(12) Bore
(13) Check Valve
4-M5
BRAKES
P: Port for 3P Hydraulic Pump
N: Port for 3P Control Valve
B: Port for Trailer Brake
R: Port for Reservoir
(Transmission Case)
X: Port for Tractor Service
Brake
Qp: Delivery Flow
Qx: Control Flow
9Y1210828BRM0005US0
KiSC issued 08, 2013 A