Harper 301012, Руководство оператора

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HK4400
Maintenance
Hydraulic System
• The hydraulic system of the HK 4400
is filled at the factory with Crown AW
46 hydraulic oil that has an ISO of 46.
• The HK 4400 has a 3 micron, beta
rated hydraulic oil filter designed for
long life.
• Hydraulic reservoir capacity - 2 gal
(7.6 L).
The following list of hydraulic fluids are com-
patible and can be mixed with Crown hydrau-
lic fluid. MIXING OTHER OILS THAT ARE
NOT INCLUDED ON THIS LIST COULD
CAUSE GELLING AND DAMAGE TO THE
HYDRAULIC COMPONENTS. If another
type of oil is desired, then the system must
be completely drained and flushed first.
Appropriate replacements:
ISO 46: Recommend for running in ambient
air temperatures of 32°F-110°F, and it con-
tains a kinematic viscosity rating around 46
cSt at 40°C. (1cSt = 1mm²/s)
• Mobil DTE 25
• Mobil DTE 15M
• Amoco Rykon Premium Oil ISO 46
• Chevron Rykon Premium Oil ISO 46
• Conoco Hydroclear AW MV 46
• Exxon Univis N 46
• Pennzoil AWX MV 46
• Shell Tellus T 46
• Texaco Rando HDZ 46
• Monitor the needle in the filter indicator
when the oil is at normal operating
temperature every 100 hours.
• The filter (part no. 822044) does
not need replaced until the needle is in
the red portion of the gauge.
• To replace filter, twist the filter
counter-clockwise. Replace with new
filter by turning it clockwise until tight.
• The hydraulic oil level should be moni-
tored daily with the hydraulic tank’s
sight glass on the right hand side of
the hydraulic tank.
• Keep the hydraulic oil near the top of
the sight glass at all times.
• Fill reservoir through the fill location on
top of the reservoir.
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