Mesh Mini

Mesh Mini

Safeco Onyx Mini Organizer w/3 Compartments, Steel Mesh, Black, 5 x 6 x 5 1/2 $28.00

RUBBERMAID/NEWELL WOOD&Wire Mesh MINI Desktop Sorter $5.99

Lorell Organizer, Desktop, Mini, 4-3/4″ x 5-1/8″ x 5-1/4″, Mesh/Black $13.25

Rolodex Ribbon Mesh Mini Sorter, Five Sections, 3 1/4 x 5 4/5 x 5 1/5, Black $10.92

RUBBERMAID/NEWELL WOOD&Wire Mesh Mini Desktop Set/HOLDR $5.99

Rotary Mini Digger Trouble-Free Solution

Mini digger breakdown of: We have found no rotary movement, while other movements were normal.

When the operating handle placed in rotary position to control the oil reach the control valve, rotary valve stem to promote the work after high-pressure pump provides the oil into the rotary motor; the same time, control the oil tank of the oil line was cut back, so that brake release valve increased pressure to make another way to promote their stem-assisted pressure oil into the brake piston, open the rotary braking device, so that rotary motor movements; rotary motor through the transmission output power of small gears, small gears meshing with the rotary ring gear resulting from rotary motion.

1. Failure Analysis and Inspection:

Rotary bodies from the principle of knowledge, resulting in failure because there are three areas, namely, the main oil line of work, mechanical drive and control the asphalt part.

(1) examination of the main oil line of work

If you turn the main oil line pressure to the lower, it will not produce rotary motion. Measurement of the main work of hydraulic system pressure, the pressure in the pump work after the exit there is a Hexagon oil block, removed after the installation of pressure gauges, rotary operating handle, the engine speed by measuring the pressure up to 23.5MPa, the normal work of the system pressure, indicating the main oil line of work of all hydraulic components were normal.

(2) mechanical transmission part of the inspection

Rotary motor will power through the transmission output of the small gears, small gears rotate around the rotary ring gear, in the power output of the process, if the gear meshing with each other by the card, will produce no rotation movement.

General gear mesh properly, there will be no abnormal sound generated is now in operation the driver did not hear the turn there is abnormal sound, so mechanical drive failure can be for the time being excluded.

(3) to control oil line inspection

As the excavator other actions are normal, indicating the auxiliary hydraulic pump provides control is working correctly. Controlling the motion of a rotary oil line 3, that control the rotary valve stem, brake release valve and into the asphalt parking brake piston. Specific analysis is as follows.

Rotary operating handle, the touch-pressure tubing rotary motor oil when a strong flu, indicating the main work pressure the oil has reached the rotary motor, the rotary control valve stem open normally, the control asphalt is working correctly. Measurement to the parking brake hydraulic piston. Open the oil line to the rotary motor fittings, fitted with three joints and pressure gauge by measuring the pressure up to 4MPa, stating that the oil line pressure to normal.

Measurements to the brake oil pressure release valve. Open the oil line to the rotary motor fittings, fitted with three joints and pressure gauge by measuring pressure 0.4-0.6MPa, obviously the pressure is too low (normal working pressure should be 4MPa), can not open the brake loose open valve, another way to control flow of the oil also can not brake piston, but not Open Rotary brake, so it has not been turning movements. The low pressure oil line for two reasons, first, control valve leaks generated so that the valve into the hydraulic brake release goes low (the pressure gauge connected to the brake release valve from the control valve to control oil pipeline The pipe joints, the measured oil pressure is only 0.4-0.6MPa, shows control valve has been leaking judicious); second brake release valve to meet the gap due to wear and tear resulting leakage of larger (after the dissolution of inspection, the stem and the valve hole with the good, nor stuck phenomenon).

2. Troubleshooting options:

From the failure analysis and inspection to know the reasons for the failure is mainly due to control valve leakage generated. As the repair more difficult, so the replacement of control valves, repaired, turning movement back to normal.

more mini digger chonstruction machinery information,please visit: http://www.minidigger.org

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