3304B & 3306B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Caterpillar


Sender Group

Usage:

Water Temperature Sender

5L7442 Sending Unit

Resistance at:

93°C (200°F) ... 800 to 900 ohms

5L7443 Sending Unit

Resistance at:

38°C (100°F) ... 403 to 493 ohms

71°C (160°F) ... 118 to 138 ohms

104°C (220°F) ... 44 to 49 ohms

6N5926 (24V)

Inspection procedure: The resistance of sender must fall within the limits shown in chart at indicated bath temperature with sender in a continuous flow bath with series resistance and applied voltage specified in chart. Bath medium shall be U con oil spec. 50-HB-280X with flow controlled to 228.6 to 254.0 mm per second. Power shall be applied for a minimum of seven minutes before inspection.

Oil Pressure Sender

NOTE: Tap sender when checking calibration. Readings should be taken on decreasing pressure.


Typical Illustration

5L7450 Sending Unit

Resistance at:

0 kPa (0 psi) ... 0 ohms

140 kPa (20 psi) ... 13.5 ohms

550 kPa (80 psi) ... 30 ohms

5L7449 Sending Unit

Resistance at:

0 kPa (0 psi) ... 0 to 1 ohm

415 kPa (60 psi) ... 4.5 to 6.5 ohms

2050 kPa (300 psi) ... 28 to 31 ohms

302010 Sending Unit

Resistance at:

0 kPa (0 psi) ... 0 to 3.0 ohms

70 kPa (10 psi) ... 5 to 16 ohms

550 kPa (80 psi) ... 90 ohms

7W2118 Sending Unit

Resistance at:

0 kPa (0 psi) ... 0 to 4.0 ohms

276 kPa (40 psi) ... 7 to 11 ohms

2068 kPa (328 psi) ... 69.5 to 75.5 ohms.

9X1124 Sending Unit

Resistance at:

0 kPa (0 psi) ... 227 to 257 ohms

138 kPa (20 psi) ... 142.0 to 162.5 ohms

552 kPa (80 psi) ... 21.5 to 49.5 ohms

Caterpillar Information System:

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3304B & 3306B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Fan Drive Belt Tightener
3304B & 3306B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Fan Drive
3304B & 3306B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Exhaust Line
3304B & 3306B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Exhaust Fitting
3304B & 3306B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Overspeed Contactor Group
3304B & 3306B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Tachometer (Digital)
3304B & 3306B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Indicators
3304B & 3306B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Gear Oil Pressure
3304B & 3306B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Temperature
3304B & 3306B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Thermostatic Pilot Valve
3304B & 3306B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Time Delay Relay
3304B & 3306B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Magnetic Starter Switch
3304B & 3306B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Start Switch
3304B & 3306B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Systems Operation
3304B & 3306B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Testing & Adjusting
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