Unimog U500, Инструкция по монтажу

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Body and Implement Mounting Guidelines U500 North America Hydraulic system
August 2005 Page 201 of
294
6.2.1.4 Lowering function of circuit 1
Warning: Risk of injury and vehicle/implement damages!
Hydraulic circuit 1, in conjunction with codes
H02/H06/H08 has no braking or proportioning
(code H08) function on the lowering function.
So, implements with a high self-weight could
fall without restriction to the ground by actuat-
ing of the float position.
Implements, which require a braked lowering function, must be
equipped with a flow restrictor. These flow restrictors should be
coordinated with implement weight.
Power-operated lifting equipment must be set up in such a way
that the implements cannot be lowered in free fall. This is ful-
filled, for example, if the flow cross-section of the hydraulic sys-
tems is designed accordingly (flow restrictor, aperture).
Adjustable flow restrictors are available in combination with code
H08.
Figure 6.1 and Figure 6.2 are showing two possibilities for braking
the lowering function.
Figure 6.1: Braked lowering function with a metered orifice
Figure 6.2: Braked lowering with a flow restrictor
implement
Adjustable flow restrictor with
non-return valve (bypass)
implement
metered
orifice