oil filter lock is a tool to remove spin-on type oil filters. This filter is a smooth cylindrical tube with knurling at the bottom that is difficult to grasp, especially when it is oily.
One common type of wrench is shown on the right. The chain circle is placed around the filter, and the bar turns counter-clockwise by hand until the chain wraps itself tightly around the filter. The socket lock or adjustable wrench is then used to turn the hexagonal bar further in the same direction. This increases the strain on the chain, which bites the soft metal casing on the oil filter that helps prevent slippage.
Another type uses metal bands that are attached at both ends to the handle. The looped band is placed around the filter and the handle is turned counter-clockwise, which puts the tension on the tape, causing it to clasp the filter.
The third type of common key is using a metal or plastic cup shaped like a socket. The cup is placed at the end of the filter, which involves knurling. A socket or wrench is then used to loosen the filter. Volkswagen Group and BMW cars need a type of wrench to remove their filters (or cover from the filter house, where non-cartridge filters are used).
Finally, the type of "claw" key, manufactured by Sykes-Pickavant and others, has three metal forks that are driven and accommodates the ratchet driver (usually) 3/8 ".When the driver rotates counter-clockwise, the gear makes the dop clutch Harder body filters This type is very effective on tight filters and can be used in more limited spaces than ropes or chains.
C & amp; N has designed their oil filter so that the removal and installation can be done with 3/4 "or 19mm socket or wrench.
Source of the article : Wikipedia
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