Muffler And Exhaust; Hydraulic Hoses; Hydraulic Oil - Jacobsen LF 550 Serie Manual De Instrucciones

7 MAINTENANCE

7.10 MUFFLER AND EXHAUST __________________________________________________

!
WARNING
Exhaust fumes contain carbon monoxide that is toxic and
can be fatal when inhaled.
NEVER operate an engine without proper ventilation.

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

7.12 HYDRAULIC OIL __________________________________________________________

Refer to Section 6.2 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 both hydraulic filters when oil filter light stays
on or 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 tank.
38
To protect from carbon monoxide poisoning, inspect the
complete exhaust system regularly, and always replace a
defective muffler.
If you notice a change in the color or sound of the exhaust,
stop the engine immediately. Identify the problem and have
the system repaired.
Torque all exhaust manifold hardware evenly. Tighten or
replace exhaust clamps.
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.
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. During this time, the oil level alarm may
sound.
c. Once the level has stabilized and the air is purged,
fill the tank to the full mark on dipstick. Start engine
and check that oil alarm remains off.
hydraulic system can
if the oil becomes
be