1994/07/11 Caterpillar


New Hose Assemblies Used In Turbocharger Oil Lines Groups{1307}

Usage:


D11N (4HK, 74Z),
776B (6JC),
776C (2TK) Tractors;
777B (4YC),
777C (4XJ),
785 (8GB),
785B (6HK),
789 (9ZC),
789B (7EK) Trucks

SUPPLEMENT: 01/29/96

Service Magazine; July 11, 1994; Page 10; "New Hose Assemblies Used In Turbocharger Oil Lines Groups"

Disregard this article. See article with the same title in this issue.

--------------- END SUPPLEMENT ---------------

SUPPLEMENT: 09/05/94

Service Magazine; July 11, 1994; Page 10; "New Hose Assemblies Used In Turbocharger Oil Lines Groups".

The article does not mention 784B (5RK) Tractors. But, any of the information in the article that applies to 785B (6HK) Trucks also applies to the 784B (5RK) Tractors.

--------------- END SUPPLEMENT ---------------

Description of Change: New hose assemblies and associated components replace some former tube assemblies in the turbocharger oil lines groups on these machines. The new hose assemblies are less susceptible to damage caused by vibration. The turbocharger spray shields are not required when the new hose assemblies are used.

Adaptable To: For D11N (4HK) Tractors, the new 109-8082 Turbocharger Oil Lines Group replaces the former 4P-2477 Turbocharger Oil Lines Group. Chart A and Illustration 1 identify the changes required to install the new hose assemblies on the former group. For D11N (74Z) Tractors, Chart B and Illustration 2 identify the changes to the 1W-0718 Turbocharger Oil Lines Group.

For 776C (2TK) Tractors, 777C (4XJ) and 785B (6HK) Trucks, the new 109-8081 Turbocharger Oil Lines Group replaces the former 7E-5541 Turbocharger Oil Lines Group. Chart C and Illustration 3 identify the changes required to install the new hose assemblies on the former group. For 776B (6JC) Tractors, 777B (4YC) and 785 (8GB) Trucks, Chart D and Illustration 4 identify the changes to the 2W-0218 Turbocharger Oil Lines Group.

For 789B (7EK) Trucks, Chart D and Illustrations 5 and 6 identify the changed to the 7E-5337 Turbocharger Oil Lines Group. For 789 (9ZC) Trucks, Chart E and Illustrations 7 and 8 identify the changes to the 2W-0218 Turbocharger Oil Lines Group.


Illustration 1. Location of new turbocharger oil line group components for D11N (4HK) Tractors.


Illustration 2. Location of new turbocharger oil line group components for D11N (74Z) Tractors.


Illustration 3. Location of new turbocharger oil line group components for 776C (2TK) Tractors, 777C (4XJ) and 785B (6HK) Trucks.


Illustration 4. Location of new turbocharger oil line group components for 776B (6JC) Tractors, 777B (4YC) and 785 (8GB) Trucks.


Illustration 5. (Front View) Location of new turbocharger oil line group components for 789B (7EK) Trucks.


Illustration 6. (Rear View) Location of new turbocharger oil line group components for 789B (7EK) Trucks.


Illustration 7. (Front View) Location of new turbocharger oil line group components for 789 (9ZC) Trucks.


Illustration 8. (Rear View) Location of new turbocharger oil line group components for 789 (9ZC) Trucks.

Caterpillar Information System:

1994/07/11 New Vibratory Pump Components Improve Service Life{5070}
1994/07/11 Throttle Cable Improved{1265}
1994/07/11 New Vibratory Drive Shaft Improves Service Life{6645}
1994/07/11 Cover Required To Adapt New Windshield Washer Motor{7306}
1994/07/11 New Pilot Operated Relief Valve Group Improved To Prevent Relief Spool Sticking{5072}
1994/07/11 New Gasket Used On Separate Circuit Aftercooler (SCAC) Radiator Inlet Elbow{1353,1380}
1994/07/11 Serviceable Steering Motor Plug Seal{4307}
1994/07/11 Accumulator Charge Valve Filters{4263}
1994/07/04 New Cylinder Head Gasket, Spacer Plate And Head Bolts Used; New Cylinder Liner Projection Measurement Method; New Cylinder Head Torque Sequence; Improved Coolant Flow (Cylinder Heads) {1124,1221,1216,1101}
1994/07/04 Backup Alarm Switch May Stick Closed {1400,7406}
1994/07/04 New Seals In Rod End Cap Improves Service Life {5107}
1994/07/04 New Diaphragm Available For Use In Park Brake Valve Group {4265}
1994/07/11 Bulk Hose Material Is Available For Air Conditioners With R-134a Refrigerant{1808}
1994/07/11 Different Fuel Filter Available To Prevent Premature Wear On Fuel Injection Pump Plungers And Barrels{1261,1251}
1994/07/11 Intake And Exhaust Valve Lash Increased{1105}
1994/07/18 Air Ride Seat Suspension Retrofit{7307}
1994/07/18 New Cam Adjustable Link Now Used With Motor Grader Rippers{6166}
1994/07/18 Improved Back-up Rings Prevent Pressure Build-up In Off-highway Truck Hoist Cylinder Groups{5102}
1994/07/18 New Instrument Panel Groups With Improved Light Bulb Retention Can Be Installed{7451}
1994/07/18 Diameter Of Spherical Bearings In Steering Cylinders Increased{7072,4303}
1994/07/18 Rubber Drive Belt Field Repair Kit{4213}
1994/07/25 Lubrication Oil Recommendations Have Been Changed For Caterpillar OFF-Highway Trucks And Tractors{0374,0375}
1994/07/25 Correct Position Of Clamp Assembly Is Required To Prevent Tie Rod Damage{4318,4329}
1994/07/25 Maintenance Interval For Steering Components, Hoist Cylinder Bearings And Rear Axle Housing "A" Frame Bearings Has Changed{7521,7551}
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