Inspections - Bosch Rexroth Hagglunds CA Series Installation & Maintenance Manual

64/76 Hägglunds CA Radial piston hydraulic motor | Maintenance and repair
Bosch Rexroth AB, Version 11.2019, RE 15305-WA
10.2

INSPECTIONS

Pressurized machine/system
Danger to life or risk of injury, serious injuries when working on energized
machines/systems. Damage to equipment.
▶ Check and be aware of the pressure you may have on the connection before
you connect your equipment.
▶ Do not disconnect any line connections, ports and components when the
machine/system is pressurized.
▶ Be careful when connecting the mini-mess hose because the oil stream can
be dangerous and should never point against any person or other sensitive
object.
Contact with hydraulic fluid
Hazard to health e.g. eye injuries, skin damage, toxication during inhalation.
▶ Avoid contact with hydraulic fluids.
▶ When working with hydraulic fluids, strictly observe the safety instructions
provided by the lubricant manufacturer.
▶ Use your personal protective equipment (e.g. safety glasses, safety gloves,
suitable working clothes, safety shoes).
▶ If hydraulic fluid inadvertently comes into contact with your eyes or
bloodstream or is swallowed, consult a doctor immediately.
10.2.1 Oil inspection
Purpose of taking oil sample
The purpose of oil sampling is to check the condition of the hydraulic fluid. With
scheduled oil analysis, wear products can be identified and corrective action
can be taken before failure occurs. Oil analysis can indicate when an oil change
is required, point out shortcomings in maintenance and keep repair cost to a
minimum. Using oil analysis can create a "window of opportunity", allowing
the user to schedule overhauls, maintenance or repairs, thus saving money on
equipment repairs and unplanned downtime.
The most used method is to take samples in a clean sample bottle and send it to a
fluid laboratory for an analysis. The laboratory should deliver a report following a
specific international standard.
The analysis should at a minimum cover viscosity, oxidation, water content and
particle counting (possibly including element analysis of particles). Another
method is to install an inline particle counter direct in your hydraulic system
which provides the contamination level according to international standards. The
disadvantage with this method is that you only get the contamination level in the oil.
DANGER
CAUTION