5I7578 SENDER-TEMPERATURE Caterpillar parts
311, 311B, 311C, 312, 312B, 315, 315B, 315C, 317B LN, 318B, 318C, 320 L, 320B, 320B L, 320C, 320C FM, 320N, 321B
Rating:
Alternative (cross code) number:
CA5I7578
5I-7578
5I7578
CA5I7578
5I-7578
5I7578
Weight: 0.05 pounds 0 kg.
EXCAVATOR,
You can buy:
US$16.00
29 Sep 2025
FridayParts
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Water Temperature Sensor, Compatible with Caterpillar 311C 315C 318B 320B 320C 323D, 5I7578, Replacement Part
Generic Water Temperature Sensor, Compatible with Caterpillar 311C 315C 318B 320B 320C 323D, 5I7578, Replacement Part
Generic Water Temperature Sensor, Compatible with Caterpillar 311C 315C 318B 320B 320C 323D, 5I7578, Replacement Part
Water Temperature Sensor Durable High Performance Excavator Accessories for CAT E320B 320C Model with OEM Numbers 252390179016 2979314 5I7578 3934000800
plplaaoo [PREMIUM CONSTRUCTION] Crafted from high-grade steel, this water temperature sensor features an ultra-durable shell designed to withstand extreme weather conditions and rough job site environments. The robust construction ensures long-lasting performance even under heavy use in demanding construction applications. || [ COMPATIBILITY] Designed specifically for CAT E320B and 320C excavator , this sensor comes with multiple OEM numbers including 2523-9017/9016, 2979314, 5I-7578, and 39340-00800 for easy identification. It serves as an exact replacement part that integrates seamlessly with your existing system. || [EASY INSTALLATION] This compact and lightweight sensor requires no special tools or expertise for installation. The straightforward replacement process means minimal downtime for your equipment. Its user-friendly design allows quick swap-out of old or malfunctioning sensors. || [PRECISE PERFORMANCE] Engineered for accuracy, this sensor delivers reliable temperature readings with excellent sensitivity. The advanced detection technology provides consistent performance to help prevent engine overheating and optimize your excavator's operation. || [VERSATILE SOLUTION] Whether for maintenance, repairs, or upgrades, this water temperature sensor offers a cost-effective solution. It's an essential component for keeping your CAT excavator running smoothly while avoiding expensive dealership parts.
plplaaoo [PREMIUM CONSTRUCTION] Crafted from high-grade steel, this water temperature sensor features an ultra-durable shell designed to withstand extreme weather conditions and rough job site environments. The robust construction ensures long-lasting performance even under heavy use in demanding construction applications. || [ COMPATIBILITY] Designed specifically for CAT E320B and 320C excavator , this sensor comes with multiple OEM numbers including 2523-9017/9016, 2979314, 5I-7578, and 39340-00800 for easy identification. It serves as an exact replacement part that integrates seamlessly with your existing system. || [EASY INSTALLATION] This compact and lightweight sensor requires no special tools or expertise for installation. The straightforward replacement process means minimal downtime for your equipment. Its user-friendly design allows quick swap-out of old or malfunctioning sensors. || [PRECISE PERFORMANCE] Engineered for accuracy, this sensor delivers reliable temperature readings with excellent sensitivity. The advanced detection technology provides consistent performance to help prevent engine overheating and optimize your excavator's operation. || [VERSATILE SOLUTION] Whether for maintenance, repairs, or upgrades, this water temperature sensor offers a cost-effective solution. It's an essential component for keeping your CAT excavator running smoothly while avoiding expensive dealership parts.
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Compatible equipment models: 5I7578:
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The field winding uses DC voltage to create a magnetic field. The magnetic field magnetizes the rotor. The rotor rotates the magnetic field on the inside of the stator. The stator generates AC voltage. The rectifier changes the AC voltage into DC voltage. Part of the DC voltage returns to the field winding in order to maintain the magnetic field. The remainder of the DC voltage is supplied to the battery and to the electrical systems through battery terminals.Alternator Operation Schematics
Illustration 1 g00825115
Electrical Schematic of the M1 Series Alternator (35 amp)
Illustration 2 g00825116
Electrical Schematic of the M1 Series Alternator (50 amp)
Illustration 3 g00829818
Electrical Schematic of the HDB Series Alternators The illustrations above show the electrical schematics for the alternators.The alternator has two circuits: the charging circuit and the excitation circuit. The charging circuit functions during normal operation. The excitation circuit functions during normal operation and during start-up. An independent circuit exists for each phase of the stator. The phases are noted as "u", "v", and "w". All alternator schematics are similar except for the 35 amp alternator. The 50 amp alternators, the 65 amp alternator, the 80 amp alternator, and the 95 amp alternator have two extra diodes. The diodes are connected to the neutral point of the stator. The diodes add extra current to the output. The 35 amp alternator lacks the extra diodes. The descriptions that follow show the 35 amp alternator.Charging Circuit
The charging circuit supplies current to the battery and to the electrical systems. The stator windings generate three-phase AC voltage. The positive diodes and the negative diodes change the AC voltage into DC voltage. The DC voltage allows current to flow to the battery terminals.
Illustration 4 g00825118
Charging circuit with phase angle of 120°The flow of current at a 120° phase angle is shown in Illustration 4. The voltage is positive at the output of winding "u". The voltage is zero at winding "v". The voltage is negative at winding "w". The current path is described below:Winding "u", positive diode "u", the "B+" terminal, the "B-" terminal, negative diode "w", winding "w" and the neutral point.
Illustration 5 g00825120
Charging circuit with phase angle of 150°The flow of current at a 150° phase angle is shown in Illustration 5. Voltage is positive at the output of winding "u", positive at winding "v" and negative at winding "w". The current path is described below:Winding "u" and winding "v", positive diode "u" and positive diode "v", the "B+" terminal, the "B-" terminal, negative diode "w", winding "w" and the neutral point.Excitation Circuit (Normal)
The excitation circuit supplies current to the field winding (exciter) during normal operation. The alternator is self-excited. The rotor contains an iron core that acts as a rotating magnet. The rotating magnetic field induces voltages in the stator windings. The stator windings generate three-phase AC voltage. The exciter diodes and the negative diodes change the AC voltage into DC voltage. The DC voltage allows current to flow in the field winding. The current induces a stationary magnetic field in the field winding.
Illustration 1 g00825115
Electrical Schematic of the M1 Series Alternator (35 amp)
Illustration 2 g00825116
Electrical Schematic of the M1 Series Alternator (50 amp)
Illustration 3 g00829818
Electrical Schematic of the HDB Series Alternators The illustrations above show the electrical schematics for the alternators.The alternator has two circuits: the charging circuit and the excitation circuit. The charging circuit functions during normal operation. The excitation circuit functions during normal operation and during start-up. An independent circuit exists for each phase of the stator. The phases are noted as "u", "v", and "w". All alternator schematics are similar except for the 35 amp alternator. The 50 amp alternators, the 65 amp alternator, the 80 amp alternator, and the 95 amp alternator have two extra diodes. The diodes are connected to the neutral point of the stator. The diodes add extra current to the output. The 35 amp alternator lacks the extra diodes. The descriptions that follow show the 35 amp alternator.Charging Circuit
The charging circuit supplies current to the battery and to the electrical systems. The stator windings generate three-phase AC voltage. The positive diodes and the negative diodes change the AC voltage into DC voltage. The DC voltage allows current to flow to the battery terminals.
Illustration 4 g00825118
Charging circuit with phase angle of 120°The flow of current at a 120° phase angle is shown in Illustration 4. The voltage is positive at the output of winding "u". The voltage is zero at winding "v". The voltage is negative at winding "w". The current path is described below:Winding "u", positive diode "u", the "B+" terminal, the "B-" terminal, negative diode "w", winding "w" and the neutral point.
Illustration 5 g00825120
Charging circuit with phase angle of 150°The flow of current at a 150° phase angle is shown in Illustration 5. Voltage is positive at the output of winding "u", positive at winding "v" and negative at winding "w". The current path is described below:Winding "u" and winding "v", positive diode "u" and positive diode "v", the "B+" terminal, the "B-" terminal, negative diode "w", winding "w" and the neutral point.Excitation Circuit (Normal)
The excitation circuit supplies current to the field winding (exciter) during normal operation. The alternator is self-excited. The rotor contains an iron core that acts as a rotating magnet. The rotating magnetic field induces voltages in the stator windings. The stator windings generate three-phase AC voltage. The exciter diodes and the negative diodes change the AC voltage into DC voltage. The DC voltage allows current to flow in the field winding. The current induces a stationary magnetic field in the field winding.
Caterpillar parts catalog:
Parts sender Caterpillar catalog:
311, 3116, 311B, 311C, 311D LRR, 312, 312B, 312B L, 312C, 312C L, 314C, 315, 315B, 315B L, 315C, 317, 317B LN, 318B, 318C, 319C, 320 L, 320B, 320B U, 320C, 320C FM, 320C L, 320D, 320N, 321B, 321C, 322...
311C, 312C, 312C L, 318B, 318C, 319C, 320C, 320C FM, 320C L, 320D, 320D LRR, 321C, 323D L, 323D LN
2384C, 2484C, 306, 306E, 307C, 307D, 320B, 320C, 320D FM RR, 320D LRR, 320D RR, 322B L, 330B L, 345B II, 345B II MH, 559C, 579C, W330B, W345B II
2290, 2390, 2391, 2491, 2590, 312C, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313D, 313D2, 313D2 LGP, 315D L, 316E L, 318D L, 318D2 L, 318E L, 319D L, 319D LN, 320C FM, 320D, 320D FM, 320D...
0964643
SENDER-TEMPERATURE
307, 307B, 308C, 313B, 314C, E110B, E120B, E140, E200B, E240C, E300B, E70B, EL240B
307, 307B, 308C, 313B, 314C, E110B, E120B, E140, E200B, E240C, E300B, E70B, EL240B
1193401
SENDER-TEMPERATURE
M312, M315
M312, M315
1127178
SENDER-FUEL LEVEL
M312, M315, M318, M320
M312, M315, M318, M320
205B, 206B, 211B, 212B, 213B, 214B, 224B, M312, M315, M318, M320
205B, 206B, 211B, 212B, 213B, 214B, 224B, M318, M320
1568819
SENDER AS
302.5
302.5
0953757
SENDER-TEMPERATURE
307, 307B, 308C, 313B, E110, E120, E140, E450, E70, E70B
307, 307B, 308C, 313B, E110, E120, E140, E450, E70, E70B
1686625
SENDER
M312, M315, PS-500
M312, M315, PS-500
1200667
SENDER-TEMPERATURE
301.5, 302.5, 303.5, 304.5
301.5, 302.5, 303.5, 304.5
2059093
SENDER AS
301.5
301.5
1553139
SENDER AS
301.5
301.5