345C Excavator Automatic Lubrication System Caterpillar


Automatic Lubrication System

Usage:

345C BWY

Problem 1: The Pump Motor Does Not Run

Cause: The Voltage supply is interrupted

Solution:

  1. Check the voltage supply or the fuses.

  1. Check the line that is leading from the fuses to the pump plug and to the timer.

Cause: The circuit board is faulty

Solution:

  1. Replace the printed circuit board.

Cause: The electric motor is faulty

Solution:

  1. Check the voltage supply to the motor. Replace the motor, if necessary.

Problem 2: The Pump Does Not Deliver Lubricant

Cause: The reservoir is empty

Solution:

  1. Refill the reservoir with clean lubricant.

Cause: There is an air pocket in the lubricant

Solution:

  1. Bleed the air at the outlet fitting that is on the pump element.

Cause: The pump suction port is clogged

Solution:

  1. Remove the pump element and check the suction port for foreign matter.

Cause: The pump piston is worn

Solution:

  1. Replace the pump element.

Cause: The check valve in the pump element is faulty or clogged

Solution:

  1. Replace the pump element.

Problem 3: There is a Blockage Downstream of the System

Cause: A bearing, line or metering device is clogged (lubricant leaking from the relief valve)

Solution:

  1. Clean the component or replace the component, if necessary.

    Note: When you disassemble a metering device for cleaning purposes, do not interchange the piston when you reassemble the metering device.




Illustration 1g01177486

Typical Outlet Numbering Pattern for a Metering Device

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