Series 111 Accumulators
Maintenance
11
Maintenance
This section describes how to maintain the charge in the accumulator.
Contents
Checking the Accumulator Precharge 13
Changing the Precharge Pressure 15
Purging Fluid from the Gas Chamber 17
Replacing the Accumulator Seal 19
Maintenance
guidelines
Maintaining the proper pressure level for your accumulators is essential for
optimum system performance and component life. Review the following
figure to familiarize yourself with the accumulator components and their
locations. Also review the guidelines on the following page before
performing any procedure.
Accumulator Components
Use the following guidelines to determine when maintenance is required.
•
Check the precharge pressure at periodic intervals. The length of time
between checks depends on how the system is used. Some factors to
consider when establishing this time interval are operating frequency,
displacement, and duration. Start with one month intervals until you
determine another interval is more appropriate. See
on page 13 for more information.
•
Maintain a log book on the condition of the precharge at each check.
Use this data to determine if the time between checks should be
increased or decreased and if maintenance is required.
Screws
Hydraulic Fluid
End Cap
Hydraulic
Fluid Port
Locking Pin
Accumulator
Valve Assembly
Accumulator Valve
Protective Cover
Valve
Stem Cap
Locknut
End Cap
Chamfer
Piston
