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Topic: VDO Air Gauge Reading High (Read 396 times) previous topic - next topic

VDO Air Gauge Reading High

One of the VDO air gauges reads about 30 lbs with no pressure in the tanks and 30lbs higher that the other gauge when operating.

Is there a way to re-zero/repair the gauge or do I just replace it?

Based on prior posts looks like the part number is VDO 150-112 and costs around $50
40ft 1997 U320

Re: VDO Air Gauge Reading High

Reply #1 –
Quote from: DayDreamer –
One of the VDO air gauges reads about 30 lbs with no pressure in the tanks and 30lbs higher that the other gauge when operating.

Is there a way to re-zero/repair the gauge or do I just replace it?

Based on prior posts looks like the part number is VDO 150-112 and costs around $50

Swap the wires on the back and see if it follows.. if it does then the sending unit?

Re: VDO Air Gauge Reading High

Reply #2 –
David,
I believe the coach in question has mechanical VDO air pressure gauges and the only wires are for instrument lighting. If so however, swapping the air lines would in effect do the same test...
Don
Quote from: DavidS –
Swap the wires on the back and see if it follows.. if it does then the sending unit?
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Don & Tys
1999 U270 3602 WTFE #5402
Xtreme Stage 1 w/Headlight, Step Conversion, etc.
2009 Honda Fit Sport with Navi
Freedom is NOT "just another word for nothing left to lose"... with apologies to Kris Kristofferson

Re: VDO Air Gauge Reading High

Reply #3 –
You can open this instrument up, reset the needle, apply a drop of crazy glue.  Done. Ask me how I know this.
1997 U270 34FT Build 5140 Cummins 8.3 Allison 3060R
Solar 1920Watts, 14KWH lithium. Orion BMS.