Back
General • Inspections

Komatsu Backhoe-Loader WB91-93/S/webm000404/wb91/93r-2: Every 500 Hours of Operation Maintenance

Use this maintenance checklist and follow the schedule interval for the proactive and preventive maintenance of your backhoe loader. This has been proven to lower costs by catching small service issues before they blossom into giant repair headaches.
MaintainX
11/04/2022

Komatsu Backhoe-Loader WB91-93/S/webm000404/wb91/93r-2: Every 500 Hours of Operation Maintenance

Use this maintenance checklist and follow the schedule interval for the proactive and preventive maintenance of your backhoe loader. This has been proven to lower costs by catching small service issues before they blossom into giant repair headaches.

    Carry out these operations together with those to be performed every 50 HOURS and every 250 HOURS.

    CHANGING THE ENGINE OIL

    DANGER!

    When changing the engine oil, change also the filter.

    Proceed as follows:

    CHANGING THE ENGINE OIL FILTER

    This operation must be carried out at every oil change. Proceed as follows:

    Start the engine, make sure that there are no leakages and that the oil pressure warning light goes out.

    IMPORTANT

    Do not use the spanner to lock the filter, since it may be damaged and cause oil leakages.

    CHANGING THE HYDRAULIC SYSTEM OIL FILTER

    DANGER!

    The filter is positioned on the hydraulic system drain outlet and blocks the metal particles that come off the various components due to their wear.

    The filter can be reached after removing the upper platform (1) with the relevant fastening screws (2).

    Use a 17 mm hexagon spanner.

    CHANGING THE FUEL FILTER

    DANGER!

    The fuel filter and the fuel pump can be reached after opening the engine hood (See “3.5.1 ENGINE HOOD”).

    FUEL FILTER

    BLEEDING THE FUEL CIRCUIT

    After filling the tank, turn the ignition key to position « » and wait approx. 15-20 seconds, in such a way as to bleed the fuel circuit.

    IMPORTANT

    DRAINING THE FUEL TANK

    DANGER!

    This operation serves to let all the impurities and the condensate flow out of the tank; remove the lower plug (1) and wait until clean fuel flows out.

    • Screenshot2021-07-22at11.53.14PM.png

    IMPORTANT

    DRAINING THE HYDRAULIC OIL TANK (Only for machines in which the synthet- ic biodegradable oil type HEES is used).

    This operation serves to let the condensate accumulated on the tank bottom flow out of the tank itself; for this purpose, carry out the following operations in the given sequence:

    CLEANING THE OUTSIDE OF THE RADIATORS

    DANGER

    If compressed air, steam or water are directed against a person, they may cause injuries. Always wear an eye shield and safety shoes.

    CLEANING THE OUTSIDE OF THE A/C CONDENSER (Only for machines with air conditioner)

    DANGER!

    If compressed air, steam or water are directed against a person, they may cause injuries. Always wear an eye shield and safety shoes.

    IMPORTANT

Source: MaintainX (Community Member)

Please note that any procedure, checklist, or other document available in the MaintainX Procedure Hub is provided for general education and information only and does not constitute legal, medical, or financial advice. MaintainX makes the materials available AS IS and AS PROVIDED, without warranties of any kind. By downloading or using any such materials, you assume the risk that they may not be appropriate for your specific situation and agree that you are solely responsible for any such use, including compliance with applicable law and with meeting any conditions of product warranties.