Detroit Diesel — Change Hydraulic Fluid
Maintenance · Hydraulic reservoir
From a Detroit Diesel service manual — check it applies to your exact model before use.
Procedure
- Drain the fluid reservoir completely, flush clean and refill with fresh fluid at least once a year.
- When empty, clean the fill screen and the large 100 mesh suction strainer attached to the cover.
- Back-flush the strainer by forcing cleaning solvent through the suction pipe in the cover.
- Rinse all components with clean hydraulic fluid after cleaning with solvent.
Source: Detroit Diesel service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.