Case 580SR Service Manual page 747

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Shake out the two springs and two valve balls into
your hand. The valve seats are bonded into the
housing and cannot be removed.
The shock valves (23) are now dismantled.
CLEANING
Clean all parts carefully.
INSPECTION AND REPLACEMENT
Check for signs of wear in the following areas:
Z Rotor and stator of metering unit move freely.
Z Check the drive pin is not cracked or bent.
Z Check the rollers in thrust bearing are free to ro-
tate.
Z Ensure thrust washers are not warped or cracked.
Z Ensure check valve ball is free to move.
Z Check control valve, spool and sleeve for wear or
scoring.
Z Replace all seals and O-ring.
LUBRICATION
Before assembly, lubricate all parts with hydraulic
oil.
SECTION 41 - STEERING SYSTEM
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