834B and 836 Landfill Compactor Hydraulic System Oil - Change Caterpillar


Hydraulic System Oil - Change
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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, "AVSpare Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on AVSpare products.

Dispose of all fluids according to local regulations and mandates.


  1. Operate the machine in order to warm the oil.

  1. Park the machine on level ground. Lower the blade to the ground and apply slight downward pressure.

  1. Engage the parking brake and stop the engine.



    Illustration 1g00038385



    Illustration 2g00038444

  1. Open the access door on the right side of the cab platform.



    Illustration 3g00038392

  1. Remove the hydraulic tank filler cap slowly in order to relieve any tank pressure.

  1. Remove the filler strainer from the filler tube.

  1. Wash the filler strainer and the filler cap in a clean, nonflammable solvent.



    Illustration 4g00275422



    Illustration 5g00275432

  1. Remove the drain plug from the bottom of the hydraulic tank on the right side of the machine.

  1. Attach a hose to a 1/2-NPT pipe nipple that is 100 mm (4 inch) long.

  1. Install the pipe nipple into the drain plug opening in order to open the internal drain valve. Allow the oil to drain into a suitable container.

  1. Remove the pipe nipple in order to close the drain valve.

  1. Clean the drain plug and install the drain plug.

  1. Replace the hydraulic oil filters.

    Reference: Refer to Operation and Maintenance Manual, "Hydraulic System Oil Filter - Replace" and Operation and Maintenance Manual, "Hydraulic System Oil Filter (Tank Filter) - Replace" for the correct procedures.

  1. Install the filler strainer.

  1. Fill the hydraulic tank with oil. Make sure that the oil level is at the "FULL" mark on the sight gauge. Install the filler cap.

    Reference: Refer to Operation and Maintenance Manual, "Lubricant Viscosities and Refill Capacities" for the correct type of oil and for the correct amount of oil.

  1. Start the engine and run the engine for at least ten seconds. Then, stop the engine and add hydraulic oil to the tank until the oil level is at the "FULL" mark on the sight gauge. Install the filler cap.

  1. Start the engine and run the engine at low idle. Cycle the implements so that all hydraulic systems are filled with oil.

    Note: Never allow the oil level to be below the suction ports in the hydraulic tank while the engine is running.

  1. Stop the engine. Top off the hydraulic tank so that the oil level is at the "FULL" mark on the sight gauge.

    Note: The oil must be free of air bubbles. If air bubbles are present in the hydraulic oil, air is entering the hydraulic system. Inspect the hydraulic suction line and the hose clamps.

  1. Inspect the filler cap gasket. Replace the gasket if damage or wear is visible. Install the filler cap.

  1. If necessary, tighten any loose clamps or any loose connections. Replace any damaged hoses.

  1. Close the access door.

Information System:

834B and 836 Landfill Compactor Steering Cylinder Bearings - Lubricate
834B and 836 Landfill Compactor Fuses - Replace
834B and 836 Landfill Compactor Fuel Tank Cap and Strainer - Clean
834B and 836 Landfill Compactor Fuel System Secondary Filter - Replace
834B and 836 Landfill Compactor Fuel System - Prime
834B and 836 Landfill Compactor Engine Oil (High Speed) and Oil Filter - Change - If Equipped
834B and 836 Landfill Compactor Ether Starting Aid Cylinder - Replace
834B and 836 Landfill Compactor Differential and Final Drive Oil - Change
834B and 836 Landfill Compactor Cab Air Filter - Clean/Replace
834B and 836 Landfill Compactor Coolant Conditioner Element - Replace
834B and 836 Landfill Compactor Circuit Breakers - Reset
834B and 836 Landfill Compactor V-Belts - Inspect/Adjust/Replace
834B and 836 Landfill Compactor Hydraulic System Oil Level - Check
834B and 836 Landfill Compactor Transmission Oil - Change
834B and 836 Landfill Compactor Rollover Protective Structure (ROPS) - Inspect
834B and 836 Landfill Compactor Transmission Oil Filter - Replace
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834B and 836 Landfill Compactor After Starting Engine
D6R Track-Type Tractor Operation
D9R Track-Type Tractor Standard Torque for Worm Drive Band Hose Clamps
844 Wheel Dozer Tree or Brush Removal
834B and 836 Landfill Compactor Starting with Auxiliary Start Receptacle
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