Why is My Bobcat Skid Steer Losing Hydraulic Power? Causes and Fixes

A Bobcat skid steer relies on hydraulic pressure to operate its lift arms, bucket, and attachments. If your machine is losing hydraulic power, you may notice slow or weak lift functions, jerky movements, or complete failure of hydraulic operations. This issue is often caused by low hydraulic fluid, clogged filters, air in the system, pump failure, or control valve malfunctions. Below, we’ll explore the most common reasons why your Bobcat skid steer is losing hydraulic power and how to fix it.

Common Causes of Hydraulic Power Loss in Bobcat Skid Steers

1. Low Hydraulic Fluid Level

Low hydraulic fluid can reduce system pressure, leading to weak performance.

Solution:

  • Check the hydraulic fluid reservoir and refill if low.

  • Use the recommended Bobcat hydraulic oil specified in your Bobcat skid steer service manual.

  • Inspect for hydraulic leaks in hoses, fittings, or cylinders.

2. Clogged Hydraulic Filter

A clogged hydraulic filter restricts fluid flow, leading to sluggish operations.

Solution:

  • Replace the hydraulic filter at recommended intervals.

  • Use an OEM or high-quality Bobcat-approved filter.

  • If metal debris is found in the filter, inspect for internal pump or motor damage.

3. Air in the Hydraulic System

Air pockets in the hydraulic system cause spongy, erratic movement and reduced power.

Solution:

  • Bleed the hydraulic system by cycling the controls multiple times.

  • Ensure all fittings are tight to prevent air leaks.

  • Follow air removal procedures in the Bobcat skid steer repair manual.

4. Worn or Failing Hydraulic Pump

A weak hydraulic pump reduces system pressure, leading to poor performance.

Solution:

  • Test hydraulic pressure using a gauge.

  • If pressure is low, inspect the hydraulic pump for internal wear.

  • Replace a failing pump with guidance from the Bobcat skid steer service manual.

5. Faulty Control Valve or Sticking Spool Valve

A malfunctioning control valve or spool valve can restrict fluid flow to the hydraulic system.

Solution:

  • Inspect the control valve for contamination or stuck components.

  • If valves are dirty, clean or replace them.

  • Check solenoid coils and wiring for damage.

  • Follow troubleshooting steps in the Bobcat skid steer hydraulic system guide.

Preventive Maintenance for Bobcat Skid Steers

To prevent hydraulic power loss:

  • Regularly check hydraulic fluid levels and refill as needed.

  • Change the hydraulic filter and fluid at recommended intervals.

  • Inspect hoses, valves, and pumps for leaks or wear.

  • Follow maintenance steps in the Bobcat skid steer service manual.

Get the Right Manual for Your Bobcat Skid Steer

A Bobcat service manual is essential for diagnosing and fixing hydraulic failures, pump issues, filter clogs, and control valve problems. At PDFManualsShop.com, we provide Bobcat skid steer repair manuals with detailed hydraulic system diagrams, troubleshooting steps, and maintenance guides.

We also offer manuals for Case, John Deere, Kubota, and Volvo.

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