Track rollers are very important parts of excavators, but they may cause some wear and tear during long-term use and need to be replaced. However, many people do not know how to replace them. So what are the tips for replacing track rollers in excavators?
Tips for replacing track rollers in excavators: When replacing the track rollers of excavators, you need to pay attention to the use of fixing bolts. When disassembling the track rollers, you must first determine whether the bolts can be removed, because you need to determine whether the rust and wear of the track roller bolts are very serious. If disassembly is difficult, it is not recommended to force disassembly, and you can find a welder to heat track rollers. If the wire is broken, it will be more troublesome. During installation, you can prepare a longer fixing bolt, at least twice the original length. First use a long bolt to fix a bolt hole, and then use a crowbar to lift the track roller. This will make installation faster and more convenient, because the track roller is very heavy, and manual lifting is not only laborious, but also inconvenient.
There are several steps to replace the track rollers in an excavator:
1. After cleaning the dirt and debris on the walking frame, park the equipment on a flat area.
2. Use a wrench to loosen the tension cylinder pressure relief plug of the walking frame. Do not loosen it more than one turn to prevent high-pressure grease from spraying out and injuring people.
3. Use the working device (big arm cylinder) to support the body, lift the track plate, and use a pneumatic wrench to loosen the track roller tile cover screws, but do not remove the screws completely.
4. Lift the big arm cylinder, lower the track plate, and the track roller supports the track plate. Loosen the screws and remove the tile cover, support the body again, and lift out the track roller.
5. Install the track roller in the order of disassembly. Apply copper powder to the track roller screws to prevent rust. After tightening it in place with a pneumatic wrench, you can adjust the specified value with a pound meter (torque tool) to add pounds.
6. After injecting high-pressure grease into the telescopic cylinder of the walking frame, measure the standard value when walking forward and backward, and the gap at a is about 10~30mm.
If track rollers has not been replaced, it is very simple if the thread of the screw can still be used. Remove the old one and replace it with a new one, and use new screws and add some screw glue. If the thread of the screw is no longer usable, it will be troublesome. Use a longer screw with a nut than the original screw and fix it with two nuts, but this kind of screw is easy to damage in the future and needs to be welded. When replacing the excavator track roller, you need to pay attention to safety and details to ensure that the installation is firm and normal.
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