One factor that can affect the overall performance of a locomotive and is DIRT. What do you use to clean a train or locomotive? You can use a pipe cleaner or just a cotton swab. Dip it in rubbing alcohol and clean the wheel with a scrubbing motion. Apart from cleaning the wheels, you should also check the universal joints and worm gears. You can also hire dependable railway contractors in the USA via TRAC.
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Locomotives must be dismantled one by one; this will be difficult, or at least annoying, the first few times, and there is the potential for permanent damage.
If you have a steam engine, look for screws under the dome, chimney. You also need to pay attention to the tabs and slots. The disassembly of multiple locomotive parts should be done with care and never use force as you would wish you hadn't.
Diesel engines are much easier to open because there are usually no screws, just pins, and slots. To carefully remove the fence, you will need a screwdriver.
Purchase a lubricant and apply it to a train or locomotive. You can apply the lubricant with a wire or toothpick. Don't use too much lubricant as it will only create more dirt and dust – which is bad news for all model trains.