At operating temperature, the hydraulic tank is hot and under pressure.
Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin.
Remove the filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. Remove the filler cap slowly in order to relieve pressure.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.
Refer to Special Publication, NENG2500, "AVSpare Tools and Shop Products Guide", for tools and supplies suitable to collect and contain fluids in AVSpare machines.
Dispose of all fluids according to local regulations and mandates.
- Slowly remove the hydraulic tank filler cap in order to relieve the system pressure.
- Remove the retaining nut.
- Remove the cover and the filter assembly.
- Remove the filter element. Properly discard the filter element.
Apply a thin coat of oil to the seal on the new filter.
- Install the filter element by hand. When the seal contacts the base, tighten the filter element for an additional 3/4 turn.
- Remove the retainer ring from the oil filler tube.
- Remove the strainer from the oil filler tube.
- Wash the screen in a clean nonflammable solvent.
- Inspect the seal on the filler cap. Replace the seal if the seal is worn or if the seal is damaged.
- Install the strainer, the retainer ring, and the cap.
- Maintain the hydraulic oil to the "FULL" mark in the sight gauge.
Replace The Case Drain Filter
- Open the access door that is located between the hydraulic tank and the operator's compartment.
- Remove the used filter element. Discard the used filter element.
- Install the new filter element. Turn the element until the element contacts the filter base. Then, tighten the element for an additional 3/8 to 1/2 turn.