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AP-1055B and BG-2455C Asphalt Pavers Caterpillar


Hydraulic System Oil - Change

Usage:

BG-2455C 6TN
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  • Open the access covers for the hydraulic tank.
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  • Remove the filler cap breather (1).
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  • Remove the plug (2) from the drain hose.

  • Open the drain valve and drain the oil into a suitable container.

  • Close the drain valve.

  • Install the plug (2) for the drain hose.

  • Return drain hose to the original position.
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  • Remove the tank cover (3) and remove the return filter element (4).

  • Inspect the inside of the tank for contamination. If contamination is found, remove the tank from the machine and clean the tank.

  • Clean the tank cover (3). Install a new gasket. Install the tank cover (3).

    Note: See Operation and Maintenance Manual, "Hydraulic System Oil Filter - Change" for information on changing the filter element.

  • Replace the hydraulic system filter element (4) in the return line. Replace all other hydraulic system filter elements.
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  • There are two return filter elements (5) and (6). Place a suitable container under the filter elements in order to catch any spilled oil.

  • Remove the small filter (6). Discard the element in a proper manner. Remove the large canister (5). Remove the element from the canister. Discard the element in a proper manner.

  • Clean the filter base. All of the old seal must be removed.

  • Apply a thin coating of oil to the seal of the new filters.

  • Install the new filter by hand. When the gasket contacts the filter base, turn the filter by 270 degrees more. This will tighten the filter sufficiently.

    Note: Every new oil filter has rotation index marks that are spaced at 90 degree increments. Use the rotation index marks as a guide for tightening the oil filter.

  • Refill the hydraulic tank. See the Operation and Maintenance Manual, "Capacities (Refill)" for the correct amount of oil.

  • Discard the spilled oil in a proper manner. Discard the old elements in a proper manner.

  • Replace the filler cap breather.

  • Install the filler cap breather.

  • Start the engine. Run the engine for a few minutes. Check the hydraulic system for leaks.

  • Stop the engine.

  • Repair the leaks that were found.
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  • Maintain the oil in the middle of the sight gauge (7).

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