Hydraulic systems are the muscles that make tractor implements work.
Like your muscles, they can get worn and tired. But unlike your muscles,
they can� �� ��and sometimes should� �� ��be replaced.
To get long life from your hydraulic system, check connections to be
sure they are clean and debris-free. Keep caps on them when not in use.
Always check and change filters according to the manufacturer's
specifications.
Hoses may be the weak link in the hydraulic system as they are most
prone to damage and wear. All high-pressure hoses have three layers. The
inner layer is a smooth synthetic rubber that is flexible, heat tolerant
and resistant to oil. The middle layer is a metal mesh of braided wires
to give the hose strength. The outside layer protects the other layers
from the environment. Because hoses move and flex, this outside layer is
susceptible to cuts and abrasions. Acids, toxic chemicals, some
detergents, noncompatible hydraulic fluids and even UV rays from the sun
can eat away the outside layer and expose the inner reinforcement layer,
which is subject to rust. Hose failure� �� ��sometimes in a sudden and costly
way� �� ��could follow.
Replace hydraulic hoses with like hydraulic hoses. The
new hose should be rated to withstand the surges and peaks your system
produces. Some hoses are less flexible than others and will not make the
same bends as the original; this could result in rapid failure. Try to
use couplings and connectors from the same manufacturer. Also consider
upgrading the quality of the hoses you use. Some of today's hoses are
made with new rubber/plastic compounds that can last up to 300 times
longer than older hoses.
Make sure the replacement hose is the right length. If
it is too short, the natural flexing a hose must do under pressure could
pull it out of its crimped connector. If the hose is too long, the extra
length could bend and twist, causing damage.
Route the new hose carefully. If the hose you are
replacing is original, chances are the manufacturer used a correct
routing. But if you bought the tractor secondhand, the previous owner
may have routed a replacement hose incorrectly. Don't make the same
mistake. When routing, consider the "squirming" the hose will experience
due to increases and decreases in pressure, and avoid a configuration
that will cause the hose to rub against metal. Don't bend a hose beyond
its recommended tolerance. And remember that hose-to-hose friction can
be brutal. If they must touch, try to bundle only hoses that flex in the
same direction.
Use clamps, nylon ties, spring guards and sleeves to
keep hoses away from objects that can cut or bruise them.
Repair Tip: If you find a hose is damaged and you plan to replace it yourself, use caution and common sense: When you install connectors on a new hose, always use two wrenches, one to hold the connector and one to prevent the hose from twisting. A twisted hose could fail, even under normal operating circumstances.