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Hydraulic System
Maintenance
Servicing the Hydraulic
System
Checking the Hydraulic Fluid
Service Interval: After the first 8 hours
Every 50 hours
Fluid Type: Mobil 1 15W-50 synthetic motor oil or
equivalent synthetic oil.
Important: Use oil specified or equivalent. Other
fluids could cause system damage.
Note: There are two ways of checking the hydraulic
oil; when the oil is warm or when the oil is cold. The
tank has two levels depending if the oil is warm or cold
(Figure 50).
1. Position the machine on a level surface and set the
parking brake.
2. Clean the area around the hydraulic tank (Figure 50).
3. If the machine has not been started and is cold,
ensure the fluid is up to the cold line on the side of
the hydraulic tank.
4. If the machine has been run and is up to normal
operating temperature, ensure the fluid is up to the
hot line on the side of the hydraulic tank.
5. If fluid is needed, remove the cap from the filler
neck (Figure 50).
6. Add fluid to the reservoir until it reaches the cold or
hot line of the tank depending on the temperature
of the fluid.
7. Install the cap on filler neck.
1. Cap
2. Baffle
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury.
• If hydraulic fluid is injected into the skin
it must be surgically removed within a few
hours by a doctor familiar with this type of
injury. Gangrene may result if this is not
done.
• Keep body and hands away from pin hole
leaks or nozzles that eject high pressure
hydraulic fluid.
• Use cardboard or paper to find hydraulic
leaks.
• Safely relieve all pressure in the hydraulic
system before performing any work on the
hydraulic system.
• Make sure all hydraulic fluid hoses and
lines are in good condition and all hydraulic
connections and fittings are tight before
applying pressure to hydraulic system.
Replacing the Hydraulic Filters and Oil
Service Interval: After the first 250 hours
Yearly—Change the hydraulic filters
and oil.
39
Figure 50
3. Cold fluid level-full
4. Hot fluid level-full
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