Pneumatic Consumers; General Notes To Pneumatic Consumers; Technical Data Of The Compressed Air System - Unimog U500 Mounting Manuallines

Body and Implement Mounting Guidelines U500 North America

8 Pneumatic Consumers

8.1 General notes to pneumatic consumers

The Unimog is serially equipped with an air brake system. When
attaching pneumatic consumers on the Unimog the following
items must be considered:
•
Only small air extraction values are permitted, for exam-
ple implement actuations
•
Pneumatic consumers with high air consumption must
not be attached to the Unimog air system
•
Continuous consumers with constant air flow must not be
attached to the Unimog air system
The implement/body can be equipped with an additional air tank.
In this case the time limit for filling the air tanks to reach the nec-
essary brake pressure must be considered (FMVSS 121 /
CMVSS 121).
Applications, which require a high airflow, must be equipped with
an external mechanically, hydraulically or electrically driven air
compressor. For additional or larger air compressors engine
mounting is not possible.
To protect the air brake system, the air may only be tapped be-
hind a pressure protection valve.
The air extraction interfaces are different for vehicles with CTIS
(central tire inflating system, code A30) and vehicles without
CTIS. Pneumatic consumers may only be connected to the fol-
lowing described interfaces.
Page 242 of 294

8.2 Technical data of the compressed air system

Operating pressure
Delivery at rated engine
speed
Compressed air connection
Reservoir, brake system
Table 8.1: Technical data of the compressed air system
Figure 8.1: Location of the compressed air system
Pneumatic Consumers
117.5 psi / 8.1 bar
79.25 gal / min / 300 l / min
at 117.5 psi / 8.1 bar
Tire inflating valve at test con-
nection of reservoir
2 x 7.53 gal / 2 x 28.5 l
August 2005