Unimog U500, Инструкция по монтажу

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Body and Implement Mounting Guidelines U500 North America Mechanical drive of implements
Page 168 of 294 August 2005
5 Mechanical drive of implements
Drive facilities
There are various possibilities to drive implements fitted to
Unimog´s.
See Section 3.2 Technical Data of implement drives, page 58, for
details.
The following power take-offs are available:
•
Auxiliary power take-off (Code N05)
•
Power take-off shaft (Code N08)
•
High speed power take off (Code N16)
•
High speed power take-off (Code N19)
The following chapter contains important and detailed information
about the different power take-offs (PTO’s) of the Unimog. A tech-
nical overview of the PTO’s is shown in Table 5.1, page 169.
5.1 Notes on the transmission ratio
General definition of the transmission ratio “
i
”:
( )
( )
Speed Output on Transmissi
Speed Input on Transmissi
i
=
off take power
engine
n
n
i
−
=
Note: Definition of input and output is according to the direc-
tion of power flow!
The speed of the PTO – drive in relation to the power take-off /
auxiliary power take-off speed is derived from the engine speed as
follows:
i
n
n
engine
off take power
=
−
This means: For transmission ratios higher than one (i > 1), the PTO –
speed is lower than the engine speed (step down).
Transmission ratios lower than one (i < 1) cause higher PTO – speed
than engine speed (step up).
5.2 General notes on mechanical implement drives
The following applies to all mechanical implement drives:
In comparison with other power transfer systems, a mechanical power
transfer is the most efficient system!
Important Notes:
•
Either option code N16 or N19 can be installed, not
both.
•
N16 and N19 PTO’s must only be used while stationary
or while driving without shifting gear, as the drag torque
of the attachment connected to the auxiliary power
take-off prevents synchronization of the manual trans-
mission. Therefore shifting must not take place be-
cause the synchronizer rings will get damaged.
•
The current Unimog code list on the Unimog Resource
CD provides information regarding the availability or
possible combinations of the optional equipment.
•
Please contact the Unimog implement manager listed
at the beginning of this guideline in the event of uncer-
tainty regarding the suitability of an auxiliary power
take-off for the planned use.