Troubleshooting Cat 248 Skid Hydraulics Issue

Top Replies

Inspecting your fuses for electrical issues

13-09-2024
seville009

A user named Brianr3989 reported having a 248 skid loader with a parking brake light issue. After replacing a faulty switch, all lights turned off but the skid loader would not move. Despite confirming proper power to the switch and coils, there seems to be a lack of hydraulic functionality. Could the issue possibly be related to the parking brake solenoid? Any assistance would be greatly appreciated.

13-09-2024
01Time

After performing a test on the solenoid and confirming its functionality, I also examined the work tool piston pump, but I noticed a lack of pressure. Can anyone provide information on the optimal pressure for the work tool piston pump?

14-09-2024
Brianr3989

Have you checked for a potential failure in the flexible coupling between the engine and hydraulic pump if there is no pressure in the system? This could be why the pump is not functioning.

15-09-2024
Nige

Is the radiator fan test a reliable way to check if the pump coupler is functioning properly?

16-09-2024
Tyler d4c

More Replies →

Nige pointed out the importance of checking the flexible coupling between the engine and hydraulic pump if there is no pressure in the hydraulic system. This could indicate a potential failure in the coupling, preventing the pump from turning properly. While the work tool piston pump is not generating pressure, the pump located in front of it is showing a pressure of 300 psi. It is crucial to address any issues with the flexible coupling to ensure proper functioning of the hydraulic system.

16-09-2024
Brianr3989

Tyler asked if the radiator fan running is a reliable way to test if the pump coupler is functioning properly. This simple test can help determine if the fan is engaging and the system is working as it should.

16-09-2024
Brianr3989

Brianr3989 mentioned that they are experiencing low pressure at the piston pump, but are getting 300 psi at the pump located in front of it. This issue indicates that the problem lies somewhere other than the engine/pump coupler.

17-09-2024
Nige

Are you aware of the optimal pressure required for the work tool pump?

17-09-2024
Brianr3989

I am currently troubleshooting an issue with my machine and unsure if purchasing a new pump will solve the problem. The machine in question has a pump connected to the motor that powers the fan. It is important to ensure that the pump is the root cause of the issue before investing in a replacement.

17-09-2024
Brianr3989

Brianr3989 mentioned that they are still troubleshooting an issue and are hesitant to purchase a new pump if it is not the root cause. There is a pump on the motor that connects to the fan motor in the machine. I recommend revisiting the suggestion I made a month ago - double check your fuses. It is possible that a fault in the brake switch could have led to a blown fuse, potentially the safety fuse.

17-09-2024
seville009

To ensure optimal performance, it is recommended that the standby pressure of the implement pump should be a minimum of 350 psi. In the case of a failed drive pump coupler, it could still be the culprit. The 248's design is distinctive, with the fan pump positioned on the back of the engine front cover. This fan pump also serves as the charge pump for the hydrostatic drive pump, allowing pressure to be maintained at the hydro pump even if it is not in rotation.

17-09-2024
Dbrg68

I identified the issue: it was the coupler connecting the engine to the pump. The fan functioned properly, powered by a separate pump.

17-09-2024
Brianr3989

According to Dbrg68, it is crucial for the implement pump standby pressure to meet a minimum of 350 psi to ensure proper functioning. In the case of a failed drive pump coupler, it could still be causing issues. The 248 model stands out due to its distinctive design, where the fan pump is powered by the engine front cover. This same fan pump also serves as the charge pump for the hydrostatic drive pump, allowing for pressure to be maintained even if the pump is not actively rotating. This new information has expanded my knowledge on the subject.

17-09-2024
Tyler d4c

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Frequently Asked Questions (FAQ)

FAQ: 1. How can I troubleshoot hydraulic issues on my Cat 248 skid steer?

Answer: Answer: To troubleshoot hydraulic issues on your Cat 248 skid steer, you can start by checking the hydraulic fluid level, inspecting for leaks in the hydraulic system, ensuring the hydraulic pump is functioning correctly, and examining the hydraulic hoses and connections for any damage.

FAQ: 2. What could be causing my Cat 248 skid steer not to move even after resolving a parking brake light issue?

Answer: Answer: If your Cat 248 skid steer is not moving after addressing a parking brake light problem, the issue could be related to the hydraulic system. It is essential to check for any hydraulic leaks, inspect the hydraulic pump, and verify that all components related to the hydraulics are working correctly.

FAQ: 3. How do I confirm if the hydraulics are the root cause of my Cat 248 skid steer not moving?

Answer: Answer: To determine if the hydraulics are causing the issue with your Cat 248 skid steer not moving, you can conduct a thorough inspection of the hydraulic system, including checking for leaks, examining the hydraulic pump, and ensuring proper functioning of all hydraulic components such as valves and cylinders.