1995/08/07 Caterpillar

Improved Payload Measurement System Pressure Sensors{7494,1901}

Usage:

773B (63W),
77C (4XJ),
785B (6HK),
789B (7EK),
793B (1HL) Off-Highway Trucks;
950F (5SK),
960F (9ZJ),
966F (1SL),
970F (7SK),
980F (8JN),
988F (8YG),
990F (7HK),
992D (7MJ),
994 (9YF) Wheel Loaders

Reference: Service Manuals, Off-Highway Trucks, SENR4733-01, and Wheel Loaders, SENR6756

Description of Change: Improved Payload Measurement System pressure sensors are now available. The new sensors have internal changes which provide higher reliability.

Adaptable To: The new sensors directly replace the former sensors. The new sensors also replace the former sensors on earlier trucks and wheel loaders with the payload measurement system. See Chart A for the correct replacement part number. See Chart B for new sensor effectivity in current production models.

Recalibration of the payload measurement system is required after replacing a sensor.

Special note for wheel loaders: When replacing a pressure sensor on wheel loaders, ensure that a 122-2222 Adapter-Orifice has been installed at the end of the pressure sensor hose AWAY from the sensor.

Caterpillar Information System:

1995/08/07 Description Of Service Code Information{7450,7569}

1995/08/07 Brake Release Pump For Towing Is Available{4354}

1995/08/07 Rear Suspension Ride Height Has Changed{7213,3278}

1995/07/31 New "High Efficiency" Fuel Filters Help Prevent Worn Injectors{1261}

1995/07/31 Carriage Rotate Pivot Pin Now Available From Part Service{6408}

1995/07/31 New Hitch Control Retains Engine Speed And Eliminates Hitch Ratcheting{5100}

1995/07/31 New Fuel Sender Provides Increased Reliability{7481}

1995/07/24 New Exhaust Manifold Shield Adds Uniformity To 3500 Machine Engines{1067}

1995/07/24 Correct Amount Of Oil For Vibratory Bearing Reservoir{6645}

1995/07/24 New Propel Pump Manifold Gasket Improves Service Life{5070,4350}

1995/07/10 Caterpillar Long Life Coolant/Antifreeze Identification{1395}

1995/07/10 Electrical System Updated, New Component List Available{1400,1406,1450}

1995/08/07 Selecting The Correct Turbocharger And Wastegate Orifice For 3500 Engines Used In 793 Trucks{1052,1057}

1995/08/07 Selecting The Correct Turbocharger, Wastegate Orifice, And Personality Module For 3500 Engines Used In 793B Trucks{1052,1057,1902}

1995/08/07 Improved 1U-7430 Front Crankshaft Seal Installer Available{1160}

1995/08/07 Injector Solenoids on Engines Equipped with EUI Are Not Polarity Sensitive{1259}

1995/08/14 Reattaching Grommets To 3E-9167 And 3E-9170 Machine Performance Panels{7490}

1995/08/14 New Axle Sustains Higher Dynamic Loads{3282}

1995/08/14 Hood Grill Improved With Enlarged Inserts{7251}

1995/08/14 New Components In Water Lines Groups And Aftercooler Group Allow Field Installation Of Variable Speed Fan Clutch Vital Information Management System (VIMS){1380,1063,1359}

1995/08/14 Parts Service Information For Articulated Trucks Equipped With Wide Gears In The Final Drive And A Spacer Between The Wheel Assembly And Planetary Carrier{4055,4051}

1995/08/14 New Indicator For Hydraulic Charge Filter Prevents Leakage{5068}

1995/08/14 New Exhaust Manifold Group Helps Prevent Exhaust Manifold Cracking{1059}

1995/08/14 Wear Sleeve Removal Tooling May "Mark" The Crankshaft{1202,1161}