Replacement of the 124-4672 Pressure Sensor for the Payload Control System {1439, 7494} Caterpillar


Replacement of the 124-4672 Pressure Sensor for the Payload Control System {1439, 7494}

Usage:

938F 1KM


Wheel Loader:
928G (S/N: 6XR1-UP)
938F (S/N: 1KM1-UP)
938G (S/N: 4YS1-UP)
938G Series II (S/N: CRD1-UP)
950F Series II (S/N: 5SK1-UP)
950G (S/N: 4BS1-UP; 3JW1-UP)
950G Series II (S/N: AXR1-UP; AXX1-UP)
962G (S/N: 5AS1-UP; 4PW1-UP)
962G Series II (S/N: AXS1-UP; AXY1-UP)
966F (S/N: 4YG1-UP)
966F Series II (S/N: 1SL818-UP)
966G (S/N: 3ZS1-UP; 3SW1-UP)
966G Series II (S/N: ANT1-UP; ANZ1-UP)
966H (S/N: A6D1-UP)
970F (S/N: 7SK1-UP)
972G (S/N: 7LS1-UP; 4WW1-UP)
972G Series II (S/N: AWP1-UP; ANY1-UP)
972H (S/N: A7D1-UP)
980F (S/N: 8CJ681-UP)
980F Series II (S/N: 8JN1-UP)
980G (S/N: 2KR1-UP)
980G Series II (S/N: AWH1-UP)
980H (S/N: JMS1-UP)
988F (S/N: 8YG1-UP)
988F Series II (S/N: 2ZR1-UP)
988G (S/N: BNH1-UP; 2TW1-UP)
988H (S/N: BXY1-UP)
990 (S/N: 7HK1-UP)
990 Series II (S/N: 4FR1-UP; BCR1-UP)

Introduction

Information that is contained in this publication is for the service replacement of the pressure sensor for the payload control systems:

This supplemental product support literature should be used with the appropriate Service Manual that is available for the standard machine.

Do not perform any procedure and do not order parts that are outlined in this publication until you understand the information that is contained in this document.

ReferenceSYSTEMS OPERATION, TROUBLESHOOTING, TESTING AND ADJUSTING, SENR6614, "PAYLOAD CONTROL SYSTEM (PCS)"

ReferenceCD, SERV7019, "OPERATION AND SERVICE - MULTIMEDIA TRAINING PROGRAM"

The 302-5668 Pressure Sensor (Kit)




Illustration 1g01374688

302-5668 Pressure Sensor Group

Replacement of the Pressure Sensor for the Payload Control System




    Illustration 2g01374790

    View of connectors

    (A) Connector

  1. Remove the male connector (A) from the 221-3416 Pressure Sensor Gp . Use the wiring table and install the following parts:

    Table 1
    WIRING TABLE    
    SOCKET     CIRCUIT     WIRE COLOR    
    A     VS     GN    
    B     GROUND     BR    
    C     SIGNAL     WH    




    Illustration 3g01356679

    View of the 928G with old sensor and with new sensor




    Illustration 4g01356346

    View of the 938F, the 938G and the 938G Series II with old sensor and with new sensor




    Illustration 5g01356323

    View of the 950F through the 970F with old sensor and with new sensor




    Illustration 6g01356357

    View of the 950G, 950G Series II, 962G and the 962G Series II with old sensor and with new sensor




    Illustration 7g01341799

    View of the 966G, 966G Series II, 972G and the 972G Series II with old sensor and with new sensor




    Illustration 8g01377658

    View of the 966H and the 972H with old sensor and with new sensor




    Illustration 9g01379586

    View of the 980F and the 980F Series II with old sensor and with new sensor




    Illustration 10g01356426

    View of the 980G, and the 980GII with old sensor and with new sensor




    Illustration 11g01376017

    View of the 988F and the 988F Series II with old sensor and with new sensor




    Illustration 12g01380750

    View of the 988G with old sensor and with new sensor




    Illustration 13g01376019

    View of the 988H with old sensor and with new sensor




    Illustration 14g01376020

    View of the 990 and the 990 Series II with old sensor and with new sensor

  1. Check Illustration 3 through Illustration 14 for your machine model.

  1. Remove the Old pressure sensor.

  1. Use the following hardware and mount the 265-2834 Block (3) onto the original bracket:

    Note: Mount the sensor in a vertical position ± 90 degrees. Mount the sensor with the port facing downward.

  1. Use the 3J-1907 O-Ring Seal (1) and install the 221-3416 Pressure Sensor Gp (2) .

  1. Connect the power lead for the 221-3416 Pressure Sensor Gp (2) onto the original plug.

  1. Reconnect the original hoses and fittings.

  1. Purge the air from the circuit when installation is complete.

Recalibrate the Payload Control System

  1. Refer to SYSTEMS OPERATION, TROUBLESHOOTING, TESTING AND ADJUSTING, SENR6614, "PAYLOAD CONTROL SYSTEM (PCS)" for the calibration procedure.

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