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7.6
Oil leaks from the plunger
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7.7
The plunger does not return, or returns more slowly than usual
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8
Maintenance
8.1
General
For standard installation instructions, refer to the Service & Support section of the Holmatro website.
Proper preventive maintenance of the equipment preserves the operational safety and extends the life
of the equipment.
8.1.1
Dangerous substances
8.2
Maintenance materials
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Possible cause
Solution
One or more of the seals inside the cylinder is
worn or damaged.
Have the cylinder repaired by a Holmatro
Certified Technician.
The cylinder is damaged internally.
Possible cause
Solution
The pressure relief valve on the pump is in the
"operation" position.
Set the pressure relief valve on the pump in the
"neutral" position.
The couplings are not connected correctly.
Correctly connect the couplings.
Too much oil is returned to the pump.
Use a pump with a bigger oil capacity.
An undersize hose restricts the oil flow.
Use a hose of the correct size.
The return spring is weak or broken.
Have the cylinder repaired by a Holmatro
Certified Technician.
The cylinder is damaged internally.
WARNING
When performing maintenance activities, always comply with the relevant safety regulations.
Wear the prescribed personal protection equipment.
WARNING
Used or leaked fluids, and any other products consumed during the activities, must be
collected and disposed of in an environmentally responsible way.
Application
Type of maintenance material
Amount
Steel parts
WD-40 preservative oil
As required
Tectyl ML from Valvoline (long term preservation)
As required
Hydraulic couplers
WD-40 preservative oil
As required
