MAINTENANCE 8
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8.10 HYDRAULIC HOSES _______________________________________________________
1.
Always lower implements to ground, disengage all
drives, engage parking brake, stop engine, and remove
key before inspecting or disconnecting hydraulic lines or
hoses.
2.
Check visible hoses and tubes daily. Look for wet
hoses or oil spots. Replace worn or damaged hoses
and tubes before operating the machine.
3.
The replacement tube or hoses must be routed in the
same path as the existing hose. Do not move clamps,
brackets, or ties to a new location.
4.
Thoroughly inspect all tubes, hoses, and connections
every 250 hours.
IMPORTANT:
The hydraulic system can be
permanently damaged if the oil becomes
contaminated.
Before disconnecting any hydraulic
component, clean the area around the fittings and the
hose ends to keep impurities out of the system.
a.
Before disconnecting any hydraulic component, tag
or mark the location of each hose and then clean
the area around the fittings.
b.
As you disconnect the component, be prepared to
assemble plugs or caps to the hose ends and open
ports. This will keep impurities out of the hydraulic
system and also prevent oil spills.
c.
Make sure O-rings are clean and hose fittings are
properly seated before tightening.
d.
Keep the hoses from twisting. Twisted hoses can
cause couplers to loosen as the hose flexes during
operation resulting in oil leaks.
e.
Kinked or twisted hoses can restrict the oil flow
causing the system to malfunction and the oil to
overheat and also lead to hose failure.
8.11 HYDRAULIC FLUID ________________________________________________________
Refer to
for specific maintenance intervals.
The hydraulic reservoir is filled with Jacobsen GreensCare
46 Biodegradable fluid.
Drain and replace the hydraulic fluid after a major
component failure, if you notice the presence of water or
foam in the fluid, or a rancid odor (indicating excessive
heat).
Always replace the hydraulic filter when changing fluid.
To change hydraulic fluid:
1.
Clean the area around the oil cap to prevent impurities
from entering and contaminating the system.
a.
Fluid temperature should be at 60° to 90°F (16° -
32°C). Do not check oil level when fluid is hot.
b.
The main hydraulic fluid tank should always be at
the Full mark on the dipstick.
2.
Drain and replace the hydraulic fluid every 250 hours,
yearly, after a major component failure, or if you notice
the presence of water, foam, or a rancid odor.
3.
Remove drain plug from bottom of main tank and
loosen or remove breather cap. Check and clean the
breather cap, replace as necessary.
4.
After fluid has drained, install drain plug and fill with
Jacobsen GreensCare 46 fluid.
5.
Purge air from system.
a.
Operate all mower functions for about 5 minutes to
purge air out of the system and stabilize the fluid
level.
b.
Once the level has stabilized and the air is purged,
fill the tank to Full mark on dipstick.
WARNING
To prevent serious injury from hot, high pressure oil,
never use your hands. To check for oil leaks, use paper or
cardboard.
Hydraulic fluid escaping under pressure can have
sufficient force to penetrate skin. If fluid is injected into
the skin it must be surgically removed within a few hours
by a doctor familiar with this form of injury or gangrene
may result.
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