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Old 08-28-2016, 05:23 PM   #1
Senior Member
Join Date: Nov 2015
Location: Oregon
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Rear air bags deflate

My rear air bags deflate after turning off motor I recently replaced both due to one leaking now after I turn off motor the back two deflate I should be able to unplug the two deflaters and see if that's the problem ??? also on the front fire wall it shows that the front air bag deflater is there and some other unit
that has a vacuum line attached what would that be plastic box with two wires vac. hose air red air line.

Thanks loads any help is appreciated.
Monaco Knight 30 pbd 5.9 Allison 3000 (now 275 70 22.5)

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Old 08-28-2016, 05:31 PM   #2
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Join Date: Jan 2012
Location: Cincinnati
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The deflating air springs could be a loose connection, a bad leveling valve, or a leaking line. If you have clearance underneath, you could paint all suspected areas with soapy water and look for leaks.

The device under the hood could be a solenoid valve for air horns, or, with the vacuum line, it might be an air powered vacuum pump. A diesel doesn't produce vacuum, so to power the vents in the dash HVAC system you must have either an electric or air powered vacuum pump.

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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