You will need
- - Phillips screwdriver;
- - Phillips screwdriver;
- - hexagons;
- - a hammer.
Spider chair can be made of metal or plastic. Diameter can be: 580, 600, 680 mm. the chair, intended for children, are set to cross smaller diameter, and large – on the office chair. If the plastic cross-piece is able to withstand loads up to 100 kg metal 20 kg more. When this plastic breaks more often, so it is best to replace the spider of steel.
Replacement of the cross begins with the dismantling of the old. To remove it will need so that not to damage the housing of the gas lift, which is installed in the middle of the cross. In this case you cannot use all his power, otherwise, it will damage not only the gas lift, but the whole mechanism of lifting and lowering the computer chair.
Remove old cross-piece rollers and remove topgan, which is attached to the seat by means of four bolts. Topgan remove gaslift few mild hammer blows on the perimeter. In addition, the broken d-pad, you can cut it with a regular hacksaw. Gas lift can remove in two ways: from the housing or from the cross.
In the center repaired the d-pad is a ring with five lugs used for fixing the plastic casing. Using a flat screwdriver pry the ring and fold the edge of one of them. Then gently slide the cover, to make it easier to remove the edge of the ledge. This procedure should be repeated for all five plastic covers.
Now with steel case remove the stoppers, then insert your new. On the rays new crosses put one casing and secure them in dedicated tabs of the retaining ring. In the new plugs, install the wheels and sit on the recliner to check its serviceability.
Making repairs chairs, remember that you are dealing with plastic parts that are easily damaged. So take the time to not have to buy a new chair.
Advice 2: How to replace gimbal crossbar
Usually a replacement universal joint crosses transmission is carried out after the occurrence of the metallic "clicks" when starting the vehicle, also in case of detection of its backlash. To replace it should be from two crosses, even if the second does not need to be replaced. This operation is simple and conduct it independently.
You will need
- - mandrel for fitting and wheel covers needle bearings of the cross;
- - hammer;
- brush on metal;
- - screwdriver;
- - pliers;
- - "blue" grease.
Install the vehicle on a pit or hoist. Remove the driveshaft and clean it thoroughly from dirt and oil parts u-joints. Take a screwdriver and mark the position of the forks of the cardan joint. This is required, since the propeller shafts are balanced during Assembly at the factory. During subsequent assemblies need to maintain the relative positions of the parts, otherwise the vehicle will occur vibration.
Take a hammer and lightly tap sort plugs inside the needle bearing cups to be able to get the retaining rings. The pliers squeeze the ends of the retaining ring. Helping a screwdriver, remove it from the universal joint. In the same way, remove the remaining retaining rings.
Put under the eyelet yoke hinge hollow point-blank range. Install a glass bearing frame. Take a hammer and lightly tap on it mypressure bearing. Rotate the driveshaft 180 degrees and mypressure next Cup needle bearing, applying light blows to the axle crosses through the mandrel.
Remove the plug flange. Remove the mechanical seal of the bearing. Mypressure the remaining bearings and remove the spider joint of the propeller shaft. In the same way disassemble the second hinge.
Install the new d-pad in the reverse order, aligning the marks that were made prior to disassembly with the "blue" grease the needle bearings. The d-pad and the fork joints put in such a way to grease the d-pad and moving the plugs were located on one side of the shaft and in the same plane. Oiler crosses from the other end of the shaft must be shifted 90 degrees to the left during the movement of the car. Check ease of movement of the forks after Assembly, u-joints, they should not have jamming and backlash.