Gauge Testing: Notes
Compare resistance values of malfunctioning gauge to specifications. See the following list for proper specification:
- OIL PRESSURE GAUGE RESISTANCE
- FUEL GAUGE RESISTANCE
- TACHOMETER CALIBRATION
- TEMPERATURE GAUGE RESISTANCE
- VOLTMETER CALIBRATION
OIL PRESSURE GAUGE RESISTANCE
| Oil Pressure (psi) | Ohms |
|---|---|
| 0 | 1 |
| 40 | 47 |
| 80 | 89 |
FUEL GAUGE RESISTANCE
| Application | Ohms |
|---|---|
| Empty | 1 |
| 1/2 Full | 44 |
| Full | 88 |
TACHOMETER CALIBRATION
| Application | Frequency | RPM |
|---|---|---|
| All Engines | 66.7 HZ | 1860-2140 |
| 166.7 HZ | 4860-5140 | |
TEMPERATURE GAUGE RESISTANCE
| Application & Test Temperature | Ohms |
|---|---|
| 100°F (82°) | 1365.0 |
| 210°F (99°C) | 115.0 |
| 240°F (116°C) | 55.1 |
VOLTMETER CALIBRATION
| Voltage Input | Pointer Position |
|---|---|
| 12V | On 12V Mark +/-6° |
| 16V | On 16V Mark +/-3° |