Instruction Manual

Sample the Hydraulic Fluid

Model 505G2.07/.11 SilentFlo™ HPU

Sample the Hydraulic Fluid

This section describes how to check the quality of the hydraulic fluid. Review the

following hints before obtaining your sample:

• Avoid contamination.

– Keep the sample bottle in the storage box of the hydraulic fluid

sampling kit until it is needed.

– Do not remove the cap from the bottle until immediately before taking

the sample.

– Do not set the cap down on a dirty surface or in an area where airborne

dust can settle.

• For additional information on hydraulic fluid care, see the Hydraulic Fluid

Care Guide (part number 050-000-536) found in the documentation package

inside the electrical control box.

• Hold the hose valve assembly still when taking a sample.

• Do not let the hose sample assembly line touch the mouth of the bottle or go

into the bottle.

Prerequisite You will need a hydraulic fluid sampling kit (part number 055-589-601).

Procedure Take a fluid sample from the reservoir to get a visual indication of the fluid level

and relative contamination. Clean hydraulic fluid is clear and has an amber color.

If the composition of the fluid appears to have changed, obtain a sample of the

hydraulic fluid from the sample port and check the fluid qualities.

Control Manifold

Bypass Valve

Hose Valve Assembly

Needle Valve

Sample Port