What are the reasons for the excavator's rapid fuel consumption and large fuel consumption?

Make an example of Volvo 360b excavator. Total oil in the hydraulic system of 500 l, and only 220 l hydraulic oil in the hydraulic oil tank, if we can only replace the hydraulic oil in the hydraulic tank, just change the system total less than 1/2 of the hydraulic oil. Introduce methods of hydraulic oil can replace 95% in this system are as follows:

(1) the machine parked on a flat on the ground, remove the bucket, shut down the engine, remove the bucket cylinder tubing connector at the end of the movable arm, and install the plug. Start the engine, slowly lift starting arm, make the bucket cylinder piston rod under the action of gravity slowly reached out to the end of the bucket cylinder stroke. Bucket after inferior vena of hydraulic oil from the cylinder, the mining mechanical arm and bucket rod back to its original position.

(2) remove the bucket rod cylinder front pin, the bucket rod cylinder engine to stroke and closed at the end. Remove the bucket rod cylinder on the tubing connector at the end of the movable arm (open tubing before the bucket rod cylinder piston, so as to avoid the arm cylinder under the action of gravity suddenly stretched out, and cause injury accident), under the weight of the arm cylinder slowly reached until the end, the bucket rod cylinder hydraulic oil from the inferior vena.

(3) remove the movable arm, movable arm cylinder slowly put to horizontal position. Pull back and forth to cram the movable arm cylinder rod 2 trip to the end, will move the arm on the cylinder, the hydraulic oil discharge after all installation of inferior vena movable arm cylinder.

(4) to the hydraulic oil in the hydraulic tank, remove the hydraulic tank and pump the oil drain plug, after put the hydraulic oil that remains on internal oil plug is installed.

(5) clean the hydraulic oil tank, replace the oil return, oil absorption, the forerunner and drainage filter, the respirator on the replacement of hydraulic oil, add a new hydraulic oil, hydraulic oil level rises to the top tank from 200 mm to stop for gas.

Unscrew hydraulic pump (6) above 2 deflated screw, when the hydraulic oil flow from two relief port and there is no air bubbles will vent screw. Start the engine, to observe the movable arm and arm cylinder tubing, when clean the hydraulic oil flow from the bucket rod and the movable arm tubing, install the tubing back (if not clean the hydraulic oil flow out, can open the separation of the handle, manipulate the movement slowly until there are clean the hydraulic oil flow out).

(7) remove the bucket on the road in the earthen pipe plug, start the engine, to observe the bucket oil earthen pipe, shut down the engine when a clean hydraulic flow, bucket cylinder tubing installation (if not clean the hydraulic oil flow out, can open the separate handle, manipulate dipper handle to two side slowly tubing has clean the hydraulic oil flow out so far).

(8) walking down on both sides of motor cover plate, the two main tubing and return pipe joint removed, start the engine, observation 2 oil mouth and return pipe, when clean the hydraulic oil flow out to install the tubing in place.

(9) remove the rotary motor 2 main tubing connector, start the engine, when the rotation of the motor side 2 oil hole shut down the engine when clean the hydraulic oil, and install plug in rotary motor 2 oil mouth. Again to start the engine, open the separation of the handle slowly rotating manipulation control handle to 2 all tubing out clean the hydraulic oil.

(10) disconnect the rotary plug and install on the motor oil. Check the hydraulic oil check feet, if the liquid level below the line, add the hydraulic oil tank liquid level from the top 200 mm. Start the engine, open the separation of the handle. Manipulation of the movable arm slowly, bucket, the bucket rod on both sides to end. Manipulation of walking slowly, rotating control handle, each direction has action. Will excavator parked in the oil level check, check the hydraulic oil, add the hydraulic oil to the line.

Other brand excavators to replace hydraulic oil method is basically the same. Replacing the former ready bucket tubing plug on movable arm (end) 2, rotary motor main oil mouth plug 2 and 1 5 t lifting equipment.