08 June, 2010-
The use of hydraulic systems has become very common in many of today's machines and equipments. Certain factors are needed to be considered while installing and operating any hydraulic component to a system. One common problem which many faces at some point while dealing with hydraulic system is to deal with a broken
hydraulic hose. It is very much easy to get the hose removed from the machine and replace it rather than to transport the machine with a leaking hydraulic hose. The best solution is to keep a constant watch on the hose for any kind of leaks and distortion. Preventative maintenance is the best option. It is better to keep a constant monitoring of the hose condition instead of waiting for the hose to become completely a leaked hose and changing at the last moment and this can save you from a major problem later on.
How to remove a leaked hydraulic hose and install a new one?
Hydraulic Hose Fitting
»»When the time comes to replace a hydraulic hose, relieve all hydraulic pressure in the system. This is done by moving the control levers through their full range with the motor off. In some machines, to allow any pressure to be released, there is the need to on the ignition key or move the lock out lever to the unlocked position
»»The next step is to place a drain pan under the hose fitting that needs to be loosen first. Check the ends of the hydraulic hoses to see if only one end has a swivel fitting. This is the point from where you should start. If both ends have swivel fittings start at the lowest end of the hose.
»»Place an open end wrench on each side of the hose fitting. To loosen the fitting , hold one wrench and turn the other wrench counterclockwise. It is to be noted that the wrench that you turn is the one on the swivel fitting. If there is no swivel end, then turn the wrench on hose end.
»»The fourth step is to check for the presence of an o-ring on the hose fitting. If you find the o-ring, replace it with a new o-ring. This should be done before installing the hose. The important point here is that your replacement hose should be of the same type as the previous one in terms of end type, length, size and of course same, or higher, pressure rating as the original hose.
»»Always be sure that before replacing the new hose, the fitting is clean, both inside and out, and start the threads together. Once you are sure that the fitting is going on straight, the fitting can be tightened securely.
»»Now the last step is to check the level of the hydraulic fluid in the tank or reservoir. When the system is filled to the appropriate level, you can start the engine and check for leaks.