NorAM 65E Turbo, Руководство по обслуживанию

Страница: 524 / 613

65E Turbo Motor Grader
Service Manual
Service 1.00_2006.03
Section 7
Hydraulics
7-43
Back Pressure Valve
When the optional float valve is installed, a back pressure
valve, 1, is mounted at the outlet of the control valve. The
check valve maintains a minimum of 207 kPa (30 psi) of
back pressure through the control valve.
A gauge port allows testing of the minimum pressure.
The cartridge, 1, can be removed and cleaned if neces-
sary. If problems occur, replace the valve.
Hoses And Fittings
Hoses from the control valve are routed through a bulk-
head (left or right) and single clamp (center) to a front tri-
ple clamp. From the clamp the hoses are routed through
the front frame until an access hole or selector valve is
reached. Fittings allow the disconnection and removal of
any damaged hose sections with a minimal the front of
the frame.
Hoses connecting to drawbar-mounted functions, such as
the circle turn motor, 1, and moldboard side shift cylin-
ders, 2, are routed to the front of the frame before being
routed back along the drawbar. Bulkhead fittings secure
the hoses at the front of the frame.
1