773D Off-Highway Truck and 775D Quarry Truck Caterpillar


Engine Oil and Filter - Change

Usage:

773D 7CS
Note: Some commercial oils that meet API specifications may require shorter oil change intervals. The oil change intervals are determined by close monitoring of the oil condition and engine wear metals. Caterpillar prefers the scheduled oil sampling as the proper method of checking engine wear metals.

Consult your Caterpillar dealer for the latest oil recommendations.

The machine must be level and the parking brake must be engaged. The oil must be warm and the engine must be stopped.



Illustration 1g00523863

------ WARNING! ------

Personal injury or death can occur if personnel are trapped between the wheel and the frame.

The steering system is hydraulically controlled and wheels can crush personnel during movement.

Use caution when working between the wheels and the frame. If the wheels must be turned, ensure that all personnel are clear of the machine before any movement.


------ WARNING! ------

Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact the skin.



NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.

Dispose of all fluids according to local regulations and mandates.




    Illustration 2g00523807

  1. Open the drain valve and drain the oil into a suitable container. Close the drain valve.


    Illustration 3g00527578

  2. Remove the used oil filter elements and discard the used oil filter elements.

    Note: The filters are located in the left front wheel well. Oil may be trapped in the filter housing bases. In order to avoid possible burns, remove the filters when the filters are cool enough to touch with your bare hand. Drain the oil into a suitable container.

  3. Clean the filter housing base. Make sure that all of the former gasket is removed.

  4. Apply a thin film of clean engine oil to the new filter element seal.

  5. Install the filter by hand. Tighten the filter element until the sealing surface contacts the base. Tighten the filter element for an additional 3/4 of a turn.

    Note: There are rotation index marks on each filter that are spaced 90° or 1/4 of a turn away from each other. When you tighten the filters for an additional 3/4 of a turn, use the rotation index marks as a guide.



    Illustration 4g00527550

  6. Remove the oil filler cap. Fill the crankcase with oil. Refer to Operation and Maintenance Manual, "Lubricant Viscosities" for the type of oil. Refer to Operation and Maintenance Manual, "Refill Capacities" for the amount of oil.

  7. Start the engine and operate the engine at low idle for five minutes. Inspect the engine oil filter for oil leaks. Make any necessary repairs.


    Illustration 5g00527546

  8. Maintain the oil level between the "ADD" mark and the "FULL" mark. These marks are on the "LOW IDLE" side of the dipstick. Stop the engine.

Caterpillar Information System:

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773D Off-Highway Truck and 775D Quarry Truck Fuel System Secondary Filter - Replace
773D Off-Highway Truck and 775D Quarry Truck Hoist and Brake Tank Oil - Change
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773D Off-Highway Truck and 775D Quarry Truck Fuel System Water Separator - Drain
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69D, 769D, 773D, 773E, 776D and 777D Off-Highway Trucks and 771D, 775D and 775E Quarry Trucks Power Train Electronic Control System Solenoid Valves
773D Off-Highway Truck and 775D Quarry Truck Power Train Differential and Bevel Gear - Adjust
554 Forwarder and 574 Forwarder Fuel System Secondary Filter Number One - Replace
773D Off-Highway Truck and 775D Quarry Truck Steering System Front Wheel - Align
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773D Off-Highway Truck and 775D Quarry Truck Access and Exit Procedures
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