1995/07/03 Caterpillar

Interface Seal Available For 70 Pin Connector Between Electronic Unit Injector (EUI) Wiring Harness And Electronic Control Module (ECM) {1408}

Usage:

D11N (4HK, 74Z) Track-Type Tractors;
776B (6JC),
776C (2TK),
784B (5RK) Tractors;
777B (4YC),
777C (4XJ),
785 (8GB),
785B (6HK),
789 (9ZC),
789B (7EK),
793 (3SJ),
793B (1HL) Trucks Equipped With EUI

Description of Change: Each of the engines in these machines requires two interface seals for the 70 pin connector plug assembly between the EUI wiring harness and the ECM. These seals are available for parts service.

Illustration 1. Location of the 9X-5615 Connector Interface Seals in a 70 pin plug assembly.

Illustration 2. 9X-5615 Connector Interface Seal.

Adaptable To: The 9X-5615 Connector Interface Seal is available to service the 3E-6448 Plug Assembly (70 pin), and the 9X-4391 Plug Assembly (70 pin) on the EUI wiring harness in the above machines. Two 9X-5615 Connector Interface Seals are required for each plug assembly.

Caterpillar Information System:

1995/07/03 New Liner Seat Inserts Allow Engine Cylinder Blocks with Deeper Liner Seat Cracks To Be Salvaged {1201,1217}

1995/07/03 New Idler Gear Assembly Used In Rear Gear Groups {1206}

1995/07/03 New Front Gear Group Used To Improve Load Carrying Capability {1206}

1995/07/03 New Pump Drive Seal Resists Cracking {3108}

1995/07/03 Improved Suspension Cylinder Spherical Ball Joint Bearing Gives Longer Service Life {7201}

1995/07/03 New Hitch Pins And Retaining Hardware Improve Lubrication Of The Oscillating Hitch Pins {7057,7113}

1995/07/03 Procedure To Inspect Disc Lining Assemblies For Wear {4273,4251}

1995/07/03 Water Lines Groups Changed To Eliminate Fan Guard Interference And Unneeded Lines {1380}

1995/07/03 New Pinion And Seal Assembly Replaces The Former Carbon Seal {3280,3254,3250}

1995/07/03 New Oil Cooler Assembly Used In Filter Base And Engine Oil Cooler Group {1378,1306}

1995/07/03 New Construction Prevents Cable Emergence {4198}

1995/06/26 New Lower Front Suspension Cylinder Retaining Pin Gives Longer Service Life{7201}

1995/07/03 New Exhaust Manifold Has Higher Temperature Capability {1059}

1995/07/03 New Bolts With "Lock-Patch" Used In Front Timing Gear Groups {1206}

1995/07/03 New Electronic Sensor Group (Speed/Timing Sensor) Used {1912}

1995/07/03 Flexible Braided Steel Hose Maintenance {1307,1380,1803}

1995/07/10 Longer Bolts And Spacers Used To Retain The Bearing Cage In The Transfer Gear Group{3159}

1995/07/10 Bonded And Riveted Brake Shoes And Lining Kits Are Available For Servicing 120-4931 And 120-4932 Service Brake Groups{4253,5251}

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

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

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

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

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

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