Vacuum Pump For Heating System - BMW 745i Repair Instructions
Test and repair instructions for supercharged engine
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Also See for 745i:
- Owner's manual (229 pages) ,
- Owner's manual (232 pages) ,
- Owner's manual (208 pages)
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VACUUM PUMP FOR HEATING SyS-
TEM
An additional vacuum pump is employed to guaran-
tee vacuum supply to the heating system in all driv-
ing conditions. The vacuum pump is connected to
the vacuum line for the heating system via a T-adap-
ter.
Voltage is supplied via term
_
15, so that the vacuum
pump runs when the ignition is on.
This pump will switch off automatically, when there
is sufficient vacuum_
101
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