COVER 7T4200 - Caterpillar

5L7446 Gauge; Use with 5L7443 Sending Unit
Rating ... 12 VTemperature range ... 100 to 240° F(38 to 116° C)Calibration test at 14 V (30° mounting):1. Connect in series with a source of 14 Volts and 84 Ohms resistance for 5 minutes.2. With 348.7 Ohms, pointer must read 100° F (37° C).3. With 84 Ohms, pointer must read 170° F (77° C).4. With 30.2 Ohms, pointer must read 240° F (116° C).5L7444 Gauge; Use with 5L7442 Sending Unit
Rating ... 24 VTemperature range ... 100 to 240° F(38 to 116° C)Calibration test at 28.5 V (30° mounting):1. Connect in series with a source of 28.5 Volts and 1050 Ohms for 5 minutes.2. With 3388 Ohms, pointer must read 100° F (37° C).3. With 1050 Ohms, pointer must read 170° F (77° C).4. With 460 Ohms, pointer must read 240° F (116° C).8D1255 Gauge (AC No. 6490028)
Use with 2P1270 Sending Unit.Rating ... 24 VTemperature range ... 123° to 227° F(51 to 108° C)Calibration procedure:1. Connect in series with a source of 28.5 .3 V and 520 Ohms resistance for 5 minutes.2. Put gauge so that part No. is horizontal and the face is back 60° from vertical.3. With 1950 Ohms, pointer must be within calibration bracket at (A).4. With 520 Ohms, pointer must be within calibration bracket at (B).(A) ... 123° F(51° C)(B) ... 227° F(108° C)