Application Guide

Aqueous Parts Washers for Hydraulic Component Cleaning

Hydraulic system failures trace back to contamination in the overwhelming majority of cases. Cleaning hydraulic components — valve bodies, manifolds, cylinders, pump housings, and fittings — is not just about removing visible grease. It is about achieving a level of cleanliness that prevents downstream particulate contamination, valve stiction, and seal degradation. Magido aqueous parts washers are built for exactly this kind of precision cleaning.

Why Hydraulic Cleaning Demands More

Hydraulic components operate under extreme pressure with tight tolerances and small orifices. A single metallic particle or residue film in the wrong place can cause valve stiction, accelerated seal wear, or catastrophic pump failure. Standard cleaning methods — wiping, solvent rinsing, or compressed air — are inadequate. They redistribute contamination rather than removing it.

Effective hydraulic cleaning requires thermal energy to mobilize varnish and oil films, chemical action to break down petroleum residues, and mechanical energy to flush particulate from internal passages and orifices. Magido's aqueous washers deliver all three simultaneously.

Reaching Internal Passages and Blind Bores

The hardest cleaning challenge in hydraulic work is internal geometry: cross-drilled passages, blind bores, spool bores, and manifold galleries where contamination accumulates and spray pressure cannot reach directly.

Magido's Agita immersion series addresses this directly. Parts are fully submerged in heated aqueous solution, and a high-energy turbine system drives vigorous fluid movement through and around every internal passage. Extended soak cycles loosen varnish and lacquer deposits. The result is clean internal surfaces that spray-only methods cannot achieve.

Removing Varnish, Lacquer, and Petroleum Residue

Hydraulic oils degrade under heat and pressure, leaving varnish and lacquer deposits on valve spools, bores, and internal surfaces. These deposits cause valve stiction and erratic system behavior. Aqueous detergents formulated for petroleum removal, heated to 150–167°F and applied with mechanical agitation, effectively dissolve and remove these deposits without damaging metal surfaces or seals.

For heavily varnished components, Magido's immersion washers provide the extended contact time needed to penetrate and lift stubborn deposits that a short spray cycle cannot address.

Cleanliness Standards and Verification

Rebuilt and remanufactured hydraulic assemblies are often required to meet ISO 4406 cleanliness codes or OEM cleanliness specifications. Achieving these standards consistently requires a documented, repeatable cleaning process — not ad hoc methods.

Magido washers provide precisely this: controlled temperature, adjustable cycle time, consistent detergent concentration, and filtered wash solution that does not recontaminate parts. Combined with a final rinse stage and post-wash drying, components emerge ready for reassembly or cleanliness verification.

Key Benefits

✓Removes varnish, lacquer, oil films, and particulate from internal passages
✓Immersion agitation reaches blind bores and complex internal geometry
✓Controlled temperature up to 167°F for effective petroleum deposit removal
✓Filtered wash solution prevents recontamination during cleaning
✓Repeatable process supports ISO 4406 and OEM cleanliness requirements

Clean Hydraulic Components to Spec

Magido's immersion and spray cabinet washers are used in hydraulic rebuild operations across manufacturing, heavy equipment, and fluid power industries. Contact our team to match the right washer to your component types and cleanliness requirements.

Request a Consultation Request an Evaluation Unit View Product Catalog