Improved Low Coolant Level Sensors On Generator Sets {1439, 7470}
- Generator Set:
- 3054 (S/N: CHN1-UP; TCN1-UP)
- 3056 (S/N: SNX1-UP)
- C1.5 (S/N: NCA1-UP; N3B1-UP)
- C2.2 (S/N: NCB1-UP; N4C1-UP; XYE1-UP)
- C2.2 GEN SET (S/N: N4B1-UP)
- C3.3 (S/N: X3B1-UP; NCC1-UP; N3C1-UP; N3X1-UP)
- C4.4 (S/N: XYC1-UP; D4D1-UP; NCD1-UP; N4D1-UP; XYD1-UP; NCE1-UP; N4E1-UP; N4R1-UP; N4X1-UP)
- C6.6 (S/N: SDA1-UP; N6D1-UP)
A new Low Coolant Level Sensor has been incorporated in the Generator Set Packages that are scheduled for new production. Additionally, the new Low Coolant Level Sensor is available as a replacement part for field service.
The new Low Coolant Level Sensor has improved reliability. Cold weather operation has also been improved. With these improvements, false nuisance alarms have been eliminated.
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 | |
| Illustration 1 | g01418851 |
Liquid Level Sensor Assembly | |
The new sensor is a one-piece unit that is a direct replacement for the existing Low Coolant Level Sensors.
Parts List
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| New Part Number | Previous Part Number |
|---|---|
| 308-3673 Liquid Level Sensor Assembly (COOLANT) (1/4-IN NPT) | 264-6370 Sensor Assembly |
| 260-4623 Liquid Level Switch | |
| 308-3674 Liquid Level Sensor Assembly (COOLANT) (1/2-IN NPT) | 260-4607 Coolant Level Sensor |
| 260-4623 Liquid Level Switch |
Wiring Table
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| Wire | Function |
|---|---|
| Black | -VE Battery (0V Supply) |
| Yellow | Output (200mA max - active low) (1) |
| Red | +VE Battery (+V Supply (8V to 30V)) |
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| ( 1 ) | The output is active low when there is a low coolant level. |
Caterpillar Information System:
2007/10/01 The Dipstick for Certain OEM Transmissions Has Been Improved {3005, 3081}
Recommendations for Battery Charging and Temperatures for Machines and Generator Sets{1401, 751B} Recommendations for Battery Charging and Temperatures for Machines and Generator Sets{1401, 751B}
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2007/10/01 Improved Fuel Transfer Pump {1258, 1260}
G3520B Engines Fuel Lines
2007/10/01 Matched Receiver Firmware for AccuGrade Dual GPS Systems {7010, 7620}
2007/09/01 O-ring Aids in Engine Break-in {1251, 1290}
2007/09/24 O-ring Aids in Engine Break-in {1251, 1290}
Installation Guide for the 256-7511 PL1000T Communication ECM{7606, 7610} Installation Guide for the 256-7511 PL1000T Communication ECM{7606, 7610}
TH31 Well Servicing Transmissions Transfer Gears - Assemble
2007/09/24 Improved Software that Helps to Conserve Ether is Available {1901, 1902, 7620}
TH31 Well Servicing Transmissions Transfer Gears - Disassemble
Repair of the Oil Filler Tube {1316} Repair of the Oil Filler Tube {1316}
G3500 Engines Thermostatic Valve
3608 Engine General Information - Reference Material
2007/10/15 Piston and Ring Wear {1225}
G3520B Engine Safety Messages
C15 and C18 Petrolem Generator Set Engines Event Codes
Check for the Correctly Wired 226-3423 Control Panel Gp (Alarm Panel, Key Switch){4490, 7451} Check for the Correctly Wired 226-3423 Control Panel Gp (Alarm Panel, Key Switch){4490, 7451}
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C18 Petroleum Generator Sets Maintenance Interval Schedule - Prime Power
C18 Petroleum Generator Sets Maintenance Interval Schedule - Standby
C9 Petroleum Engines Jacket Water Heater
2007/10/08 Improved Reliability of the Crankshaft Flange {1157}