How to resolve a lack of hydraulic pressure on the cylinder after an oil change on the AL-KO KHS 5204 log splitter?

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After an oil change on your AL-KO KHS 5204 log splitter, it is possible that the hydraulic pressure does not manifest immediately, especially if the cylinder does not generate pressure despite several piston movements. Here are the steps to follow to resolve this issue:

1. Check the hydraulic oil level

Ensure that the oil reservoir is filled to the recommended level. An insufficient level can prevent the creation of the pressure necessary for the operation of the cylinder.

2. Bleed the air from the hydraulic system

During the oil change, air may have entered the hydraulic circuit, preventing the pressure from rising. To bleed the air:

Make several back-and-forth movements with the piston to expel the air.
Repeat this operation until the movement is smooth and the pressure manifests.

3. Inspect for leaks

Examine all connections, hoses, and seals for any oil leaks that could prevent the pressure from rising.

4. Check filters and components

If your model is equipped with a hydraulic filter, check that it is not clogged, which could limit flow and pressure.

5. If the problem persists

If after these checks the problem persists, it is advisable to consult a qualified professional to diagnose and repair the hydraulic system.

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