Skid steer hydraulics slow when hot: filter, fluid and cooler

Applies to: Bobcat, Gehl and other skid steer loaders

Symptoms

  • Lift and tilt slow down after an hour of work
  • Drive feels weak when hot
  • Hydraulic temperature light comes on

Why it happens

A clogged oil cooler or radiator, a dirty hydraulic filter, or low or worn-out fluid lets the oil overheat and thin out.

How to fix it

  1. Blow out the oil cooler and radiator from the inside out.
  2. Check hydraulic fluid level and condition.
  3. Replace the hydraulic filter and change fluid per the manual interval.
  4. Check charge pressure and relief pressure if it's still slow.

Tools and parts

  • Hydraulic filter
  • Hydraulic fluid per manual
  • Pressure gauge

What the factory service manual covers

Hydraulics and hydrostatics: fluid spec, filter service, pressure tests. The full procedure, specs and wiring diagrams are in the factory service manual for your machine.

Get the factory service manual

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