1997/03/03 Caterpillar


New Harness Assembly For 3500 Electronic Unit Injector (EUI) Engines And 3500B Engines {1408}

Usage:


D11N (4HK, 74Z) Track-Type Tractors;
776B (6JC),
776C (2TK),
776D (5ER),
777B (4YC, 3NF),
777C (4XJ),
777D (3PR),
784B (5RK),
785 (8GB),
785B (6HK),
789 (9ZC),
789B (7EK),
793 (3SJ),
793B (1HL),
793C (4AR) Off-Highway Trucks;
5130 (7TJ, 5ZL),
5230 (7LL) Excavators;
3508 (5TL),
3512 (6FL),
3516 (7CL) Remanufactured Machine Engines

Description of Change: A new harness assembly has replaced the former harness assembly in the above machines powered by 3500 EUI Engines or 3500B Engines. The improvements to the new harness are listed below.

Adaptable To: The new 132-6469 Wiring Harness Assembly is a direct replacement to the former 7E-5342 Wiring Harness Assembly. The former wiring harness assembly has been canceled. Within the 132-6469 Wiring Harness Assembly, the yellow 8T-5347 Wire has replaced the former brown 3E-9472 Wire. This change is adaptable to first production and up.

132-6469 Wiring Harness Improvements:

* The 8T-5347 Wire has a temperature rating of -54°C (-65°F) to 66°C (150°F). The former 3E-9472 Wire had a temperature rating of -40°C (-40°F) to 57°C (135°F).
* The 8T-5347 Wire has a smaller diameter than the former 3E-9472 Wire for a better fit into the 121-2024 Base Assembly (3500 EUI) groove or the 120-7412 (3500B) groove.

Caterpillar Information System:

1997/03/03 Improved Bushing O-Ring Seal Available For Injection Pump Groups {1251}
1997/03/03 New Circuit Breaker Panel Base Improves Reliability {1417}
1997/02/24 Information Needed For VIMS Support {7601}
1997/02/24 Resetting Event Recorder And Service Lamp For VIMS {7601}
1997/02/24 Lubrication Pump Group Container Assembly Now Available As A Serviceable Part {7540,7510}
1997/02/24 Tooling Available To Tighten Cab Mounting Bolts {7301,0602,0765}
1997/02/24 New Larger Steel Retainers Used In Return Line Manifold Increase Service Life {5057}
1997/02/24 Some Service Parts Available For Engine Fuel Injection Pump {1251}
1997/02/17 VIMS-PC Version 2.1 Now Available {7601}
1997/02/17 New Motor Rotating Group Used And New Swing Motor Group Used To Improve Handling {5058}
1997/02/10 Updates To Hydraulic Excavator Engine Due To Underspeed Electronics {1408,1920}
1997/02/10 New Hose Used In Hydraulic Front Lines For Combining Stick Flow Between Control Valves Provides Longer Service Life {5057}
1997/03/03 Installation Of Piston Pin Retainer {1215}
1997/03/10 Technical Information "Bargain List" {0374,0375}
1997/03/10 Correct Identification Of Flexible Coupling Group {3252}
1997/03/10 Identifiers Detect Contaminated Air Conditioning Refrigerant {1800,1802,7320}
1997/03/10 Proper Tensioning Of V-Belt Improves Air-Conditioning Compressor Service Life {1807,7320,1800}
1997/03/17 New Washers Used In Oil To Air Cooler Group To Improve Service Life{1374}
1997/03/17 New Bolts And Washers Used To Retain Track Tensioner Cylinder Rod Seal{4197,4157}
1997/03/17 The Addition Of Washers To The Boom Valve In The Main Hydraulic Control Improves Controllability{5051,5461}
1997/03/17 Bottom Dump Cylinder Has Stronger Cylinder Cap{5457}
1997/03/17 Swing Pump Braking Torque Response May Be Adjusted{5473,5467}
1997/03/17 Procedure To Increase Swing Frame Service Life{6506}
1997/03/17 Special Instruction SEHS9824-01 Available For Cab Window Service Procedure; Provides New Adhesive Information For Improved Bonding Capabilities Under Cold Weather Conditions{7310}
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