User's Manual

10 307623H
Maintenance
Hydraulic leaking at the reciprocator fittings. All of
the fittings (7, 8 and 10) going into the upper and lower
cylinder caps are self–sealing and have replaceable
o–rings (24, 25). See Parts, page 13. If you experi-
ence any leaking at these fittings, tighten them. If the
leaking persists, remove the fitting and replace the
worn o–ring.
Check the tightness of the packing nut weekly.
Always follow the Pressure Relief Procedure on page
8 before adjusting it. The packing nut should be tight
enough to stop leakage, but no tighter. Overtightening
will compress and damage the packings and result in
pump leaking.
Carefully monitor the fluid supply. If the pump
empties the supply container, air is sucked into the
pump, causing it to run too fast and to be damaged. If
the pump runs too fast, shut it off immediately. Fill the
supply container and prime the pump and hose to
remove all air, or flush the pump and hose with a
compatible solvent and leave it filled with an oil-base
solvent to protect pump parts from corrosion.
CAUTION
Never leave water-based fluid or air in the pump
when it is not in use. Flush the pump and fill it with
mineral spirits or other oil-based solvent to prevent
pump corrosion or fluid hardening in it.