About Used Power Steering Reservoirs
The reservoir holds the power steering fluid and often contains a filter screen, and cracked tanks, clogged screens, and broken mounts are the usual failures. A used reservoir is a cheap, simple fix.
What a Power Steering Reservoir Does
The power steering reservoir stores the system's fluid supply, feeds the pump, and receives the return flow. It may bolt to the pump or mount remotely with hoses, and many contain a filter screen that catches debris, which can clog and starve the pump.
Signs Your Power Steering Reservoir Is Failing
- A cracked or leaking reservoir tank
- A clogged internal screen causing pump whine and starvation
- Broken mounting tabs
- Dark, sludgy fluid and a dirty tank
What to Check When Buying a Used Power Steering Reservoir
- Check the tank for cracks, especially at mounts and hose necks
- Look through the filler at the internal screen for sludge
- Confirm pump-mounted versus remote to match yours
- Match the exact reservoir for your vehicle
Common Applications
Hydraulic power steering vehicles all have a reservoir, and brittle plastic tanks crack while internal screens silt up with age. A clean used reservoir, with fresh fluid, cures whine and leaks cheaply.
Related Parts
Frequently Asked Questions
Can a reservoir cause power steering whine?
Yes. Many reservoirs have an internal screen, and when it silts up with debris, it starves the pump, which whines and aerates the fluid. A clogged screen mimics a bad pump, so check the reservoir before condemning the pump.
How do I check the reservoir screen?
Empty the tank and look through the filler and outlet with a light: the screen should be visible and clean. A gray, sludge-caked screen means the reservoir should be replaced or thoroughly cleaned.
Is the reservoir on the pump or separate?
Both designs exist. Some pumps carry the reservoir on their back, others use a remote tank connected by hoses. Match the style your vehicle uses.
Should I replace the fluid with the reservoir?
Yes. The debris that clogged the old screen is in the fluid, so a flush with the correct fresh fluid protects the pump and the clean reservoir.
