How To Repair Log Splitter With Hydraulic Problems

About this repair:
  • Rated as REALLY EASY
  • 4 step by step videos

Pump or Lines

The hydraulic system that controls the cylinder relies on the pump and lines being filled with hydraulic fluid in order to work properly. Force is created by hydraulic fluid being pumped through the lines to move the hydraulic arm with enough force to split a piece of wood. If the pump and lines do not have sufficient fluid in them, the arm will not be able to move with as much force as necessary to split logs efficiently. Ideally, the hydraulic system should be topped up on a regular basis. Refer to your user manual for specific information on the type of hydraulic fluid your machine requires, and the suggested schedule for performing this type of maintenance.

Hydraulic Pump

The hydraulic pump controls the flow of fluid within the pump system. Most log splitter hydraulic pumps will be two-stage pumps, meaning that they can force the liquid within them to move in two different directions, which allows for the hydraulic arm to be pushed forward to split wood, and also retracted so the machine can be reloaded with a new log. The seals on these pumps wear over time and eventually can cause hydraulic fluid to leak out of the system. If fluid is leaking from your pump, disassemble it and replace all seals. When repairing a damaged pump it is important to carefully analyze and address the rest of the hydraulic system. When the pump fails it will often send metal debris throughout the hydraulic system. At a minimum it will be necessary to thoroughly flush the hydraulic fluid and replace the filter. Debris left in the system can quickly ruin a new pump.

Hydraulic Valve

The hydraulic valve directs the flow of hydraulic fluid to the cylinder to extend and retract the arm. This valve has a number of seals that can wear over time. If hydraulic fluid is leaking from the valve or its housing, it is likely that the valve will need to be replaced. A damaged valve will limit the users control over the hydraulic system and will often stop the system from operating completely.

Hydraulic Filter

All hydraulic systems have a filter installed to filter out any solid debris present in the hydraulic fluid. Dirt, or other solid material can clog the lines, pump and filter, and can also cause significant damage to the pump cylinder if the machine is run for a long period of time with contaminated fluid. The hydraulic filter will need to be cleaned and replaced on a semi regular basis to ensure that fluid is able to move freely throughout the system. A plugged filter can slow the displacement of hydraulic fluid and affect the motion and power of the arm. If dirt is found to be in your hydraulic system, it should be flushed out and filled with new fluid before any serious damage occurs to the pump or other components of the hydraulic system.

More Repair Parts

Still not sure which part is broken? We can offer you custom troubleshooting help if you search with your model number.