385B Excavator Boom, Stick and Bucket Linkage - Lubricate Caterpillar


Boom, Stick and Bucket Linkage - Lubricate
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Note: AVSpare recommends the use of 5P-0960 Molybdenum Grease for lubricating the boom, the stick, and the bucket control linkage. Refer to Operation and Maintenance Manual, "Lubricating Grease" for more information on molybdenum grease.



Illustration 1g00846102

Wipe all fittings before you apply lubricant.



    Illustration 2g00359772
    Typical example

  1. Apply lubricant through the fitting at the base of each boom cylinder.


    Illustration 3g00565405

  2. The fittings are at the base of the boom. The fittings can be serviced from the platform on the storage box. To lubricate the lower right boom bearing, apply lubricant through fitting (1). To lubricate the lower left boom bearing, apply lubricant through fitting (2). To lubricate the boom cylinder rod, apply lubricant through fittings (3) and (5). To lubricate the stick cylinder head, apply lubricant through fitting (4).

    Note: To ensure proper lubrication of the lower boom bearings and of the boom cylinder rod end bearings, lubricant should be applied through fittings (1), (2), (3), and (5). Apply lubricant first when the boom is raised and any implement is suspended. Then apply lubricant when the boom is lowered and the implement is rested on the ground with a slight downward pressure.



    Illustration 4g00810874

  3. Apply lubricant through fittings (6), (7), (8), (9), and (10). These fittings are on the link.

  4. Apply lubricant through fittings (11) and (12). These fittings are on the bucket.


    Illustration 5g00565406
    These fittings are located on the end of the stick.

  5. Apply lubricant through fitting (13) and fitting (16) in order to lubricate the connection point of the boom and of the stick.

  6. Apply lubricant through fitting (14) in order to lubricate the stick cylinder rod.

  7. Apply lubricant through fitting (15) in order to lubricate the bucket cylinder head end.

    Note: If the machine is equipped with an automatic lubrication system, lubrication of the boom, stick and bucket control linkage does not need to be done manually.

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