You have to remove the cover from the instrument panel there are three screws up by the windshield you will need a short screwdriver for two screws below the gauges and two screws under each control panel after the cover is removed you need to losen the instrument cluster it will only come forward a few inches after that you need to reach behind and twist the bulb socket clockwise half a turn and out it will come replace the bulb and try and get the socket back in the hole and put everything back together. BE PREPARED TO SPEND TWO TO THREE HOURS ON THIS!
I may be mistaken, but I don't think you can change the gauges. I think I recall seeing here, that you must replace the entire instrument cluster.
The instruments to measure air pressure in the ambient surroundings include:a mercury barometerananeroid barometera weather glassAir pressure can also be measured in containers (auto tyres and tanks). These measurements utilize:Bourdon gaugesDiaphragm gaugesSpring gauges (Like tyre pressure gauges)Piezoelectric gauges
Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges.
You can't and will have to buy new ones or replace the instrument panel with a used one.
A variety of instruments are used to measure vacuum. For rough vacumms, simple pressure gauges are used. For high vacuums, some very high-tech methods are used, including ion gauges, hot and cold Pirani gauges, capacitance gauges, and others.
A Barometer is one, a manometer another. In aircraft, a Pitot Tube is used to infer velocity. Otherwise, tyre gauges and other pressure gauges are appropriate in their sphere. A Bourdon Tube gauge is a common configuration.
We have full instruction on cluster removal and how to replace the stepper motors for the gauges. Use the search button "how to replace your stepper motors" www.trailvoy.com
To properly recharge it you have to have a refrigerant recovery system and gauges.
The gauges on the dash is the instrument cluster.
A pressure gauge is an instrument that measures the pressure in a vessel, a line, or whatever the pressure gauge is connected to. Pressure gauges come in at least two different types: differential pressure gauges, and absolute pressure gauges. Differential pressure gauges measure - surprise - DIFFERENCES in pressure. Pressure gauges that read "zero" when not attached to anything would actually be differential gauges that measure the difference between atmospheric pressure and the pressure of whatever they are attached to. Vacuum gauges are differential gauges that measure how far BELOW atmospheric pressure the pressure is in a vessel or pipe. Gauges that measure "gauge pressure" are just differential gauges that are calibrated to measure zero at atmospheric pressure. Absolute pressure gauges would only read "zero" if they were attached to an absolute vacuum. A common type of absolute pressure gauge is a barometer. Strictly speaking, a mercury barometer is really a differential gauge that measures the difference between the vapor pressure of the mercury and the surrounding atmosphere, but the vapor pressure of the mercury is so low that the error in treating it as an absolute pressure gauge is generally negligible. There are many different kinds of gauges used to measure pressure including: Instruments hydrostatic - These measure pressure according the height of a liquid in a column. The height of the liquid is proportional to the pressure. Common types of hydrostatic gauges include: manometers, McLeod gauges, and piston gauges. aneroid - The pressure sensing element may be a Bourdon, a diaphragm, a capsule, or a set of bellows, which will change shape with changes in the pressure of whatever the gauge is attached to. The deflection of the pressure sensing element is read by a linkage connected to a needle or by a secondary transducer. The most common secondary transducers in modern vacuum gauges measure a change in capacitance due to the mechanical deflection. Gauges that rely on a change in capacitance are often referred to as Baratron gauges. Electronic sensors thermal conductivity - including two wire and one wire gauges that measure pressure via changes in the thermal conductivity of the wires as they are placed under strain. Something like this is used in a lot of electronic bathroom scales. ionization gauges - These are primarily used for measurements of low-pressure gasses. They sense pressure indirectly by measuring the electrical ions produced when the gas is bombarded with electrons. Fewer ions will be produced by lower density gases. they have to be calibrated against another type of pressure gauge and depend on the gas being measured.
derived from the motor vehicle instrument sector, which produced speedometers, tachometers, odometers, fuel level gauges, water temperature gauges, ammeters, oil pressure gauges,