General Maintenance Procedures
Page 11
SP000016
Oil Leakage Precautions
Oil that is visibly seeping from joints or seals should always
serve as a "red flag" alarm.
Leaks must alert the machine operator and maintenance crew
that air, water and dirt have an open, free passageway through
which to enter the circuit. Harsh, corrosive salt air, freezing and
thawing condensation cycles and working environments that are
full of fine dust are especially hazardous. Clogging of valve
spools or external piping (especially pilot circuit piping) can
gradually diminish or very suddenly put a complete stop to
normal hydraulic function. You can prevent having to make these
types of repairs by following recommended assembly
procedures:
1. Use new O-rings and oil seals whenever hydraulic
assemblies are rebuilt.
2. Prepare joint surfaces before assembly by checking
alignment and flatness. Clean and repair corrosion or
any other damage.
3. Follow bolt torque recommendations and all other
assembly requirements.
NOTE: Grease lip seals before assembly.
Figure 1
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