Hydraulic Maintenance - Husqvarna PP 418 Manual De Instrucciones

HYDRAULIC SYSTEM SPECIFICATIONS
Oil Tank volume:
Oil Type:
Hydraulic Filter (large): 510 02 33-01 25 Micron fi lter
Hydraulic Filter (small): 542 16 64-49 25 Micron fi lter
NOTICE: Never use automotive type oil fi lters. They do
not have the required fl ow capacity and can burst during
operation.
Replacement Frequency:
Both Filters - After 1st 50 hours, then every 100 hours
Hydraulic Oil - Every 100 hours or once a year
SYSTEM MAINTENANCE
Daily
• Check hydraulic oil level. Make sure that the oil level
on the sight glass is above the lower limit indicated.
Add oil as needed.
• Check for any leaks or kinks on the hydraulic hoses
or any other leaks at couplers and fi ttings.
• Check oil cooler for any debris and dirt buildup.
Remove debris with air pressure or spraying with
a garden hose. Do not use a high pressure washer
directly on the cooler.
REPLACING OIL AND FILTER
Remove the 4 screws as indicated below. This will ena-
ble full access to the large oil fi lter.

HYDRAULIC MAINTENANCE

10 liter (2.6 gal)
ISO 46 (see page 8)
WATER CONTAMINATION
In humid climates the hydraulic system can collect large
amounts of water condensation in the oil tank. This hap-
pens due to the humid air in the tank changing from getting
hot and cold. Small amounts of water condensation will not
be noticeable. If large amounts of water are present, the
oil will "foam" or turn "white". The power pack and other
hydraulic tools should not be operated with water contami-
nated oil.
If water contamination occurs you should replace the oil
and fi lters. In some cases it is feasible to remove the water
contamination out of the oil. The hydraulic hoses should
also be emptied.
Procedure for removing the water:
• Install the hoses and connect the ends together.
• Start the engine and turn on the fl ow selector to the 40
liters (10 gal)
• Let the engine operate for 5 minutes at this fl ow setting.
• Turn of the engine and drain the oil tank in an appro-
priate container. Preferably – remove the quick couplers
on the hoses and drain oil into a container.
• The water in the contaminated oil will settle at the bot-
tom of the container in approximately 24 hours. The oil
will now appear "normal".
• Carefully pour the clean oil back into the tank – leaving
the water in the container.
• REPLACE the oil fi lters.
TROUBLESHOOTING THE HYDRAULIC SYSTEM
To adequately diagnose and troubleshoot any problems
related to the hydraulic system it is necessary to have a
hydraulic tester consisting of a fl ow meter and pressure
gauge. Never readjust the pressure relief valve without the
proper hydraulic diagnostic tool.
CONTACT a local Husqvarna dealer or Husqvarna Con-
struction Products for diagnostic help.
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