80-4
®
VACUUM PUMP
CAUTION
!
NOTICE
The Vacuum Pump if equipped (Fig-1) puts a vacuum on the hydraulic circuit (case drains and tank
return circuits).
This is used when servicing or replacing hydraulic components. It’s purpose is to minimize
the hydraulic oil loss. The VAC PUMP button
(Fig-2)
on the side console key pad operates the Vacuum
Pump.
VACUUM
PUMP
Fig-1
Fig-2
Avoid running the vacuum pump for long periods of time.
Ÿ
If used for extended periods of time the oil level drops in the filter
housing and is replaced by air.
If the machine is started and brought up to
working rpm’s right away, after work is complete, the air in the filter housing
will be pressed out through the filter at high speed. The air bubbles within
the hydraulic oil that then form will be the same size as the filters filtration
rating.
Ÿ
If the service work requires that the vacuum pump to be run for a long
period of time, once the work is complete, the machine must be run at
a idle for several minutes with out any functions being used.
After being
run at an idle, run each machine function slowly to help purge any remaining
air out of the hydraulic system.
When finished making the repairs, turn off the vacuum pump.
Wait 30 seconds
before starting machine. This gives the time needed for the vacuum to be released
from the hydraulic system.
06/03/2019
Updated
OPERATOR’S
Содержание HARVESTER 240B
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