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Topic: VDO Air Gauge Reading High (Read 415 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

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?
 

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.