Hydraulic Hoses; Hydraulic Oil And Filter - Jacobsen Super LF 1880 Parts & Maintenance Manual

4.10 HYDRAULIC HOSES _______________________________________________________

!
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.
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 and ties to a new location.
4. Thoroughly inspect all tubes, hoses, and connections
every 250 hours.

4.11 HYDRAULIC OIL AND FILTER _______________________________________________

Refer to Section 6.3 for specific maintenance intervals.
Drain and replace the hydraulic oil after a major component
failure, or if you notice the presence of water or foam in the
oil, or a rancid odor (indicating excessive heat).
Always replace the hydraulic filter when changing oil.
To change hydraulic oil:
1. Clean the area around the oil cap to prevent impurities
from entering and contaminating the system.
2. Remove drain plug from bottom of main tank.
3. After oil has drained install drain plug and fill with
Jacobsen Hydraulic oil.
4. Purge air from system.
a. To prevent reels from overheating, disconnect
motors from reels.
b. Operate all mower functions for about 5 minutes to
purge air out of the system and stabilize the oil
level.
c. Once the level has stabilized and the air is purged,
fill tank to full mark on gauge.
MAINTENANCE
IMPORTANT: The
permanently damaged
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 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 hose 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.
The hydraulic system is protected by one 10 micron filter
(A). The filter is located under the frame near the hydraulic
oil tank.
To replace hydraulic oil filter:
1. Remove the old filter.
2. Fill new filter with oil then install new filter. Hand tighten
only.
3. Operate engine at idle speed with hydraulic system in
neutral for five minutes.
4. Check hydraulic oil level and fill to full mark on gauge.
hydraulic system can
if the oil becomes
A
Figure 4B
4
be
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