Oil filter must not find a tool to screw, either directly by hand, or with professional tools. However, in reality, the small trade union first tightened with hands, and then used tools to death. When he saw his trembling arms and inclined body, he knew that he had really tried his best! In this way, it was all wrong! Delphi Express repair chain professional repairman said: screw type filter (Management iron shell) must not be screwed with tools at will, let alone screwed to death!

The reasons are as follows.

1、 It can't be too tight

The sealing ring is easy to fold because the filter is installed too tightly. There will be a gap between the sealing ring and the engine base at the folded place, and oil leakage will occur.

2、 Don't use tools casually

In the process of installation, the tool metal should be prevented from squeezing into the iron shell of the machine filter, and the iron sheet is easy to thin. After the iron sheet thinned, it is easy to burst in the operation of high temperature and high pressure oil, which is very dangerous.

Note: it is not uncommon for filter of various famous brands to burst, leak oil and leak oil under wrong installation.

Different times, efficiency is the king and safety is the key. Even if it is a small machine filter, professional tools are indispensable, and the standard action of car repair can not be out of shape.

3、 There are two ways to screw the filter: 1. Direct use of hands; 2. Professional set of tools

In practice, there are not many vehicles that can be installed by hand, most of them use suits.

4、 The standard installation action is also used:

1. Check whether the filter is bumped.

2. Oil flushed on the sealing ring.

3. Rotate the filter by hand until the seal ring of the filter is in contact with the base (that is, when it is tightened to make it strong at the beginning).

4. 3 / 4 turn more (mark with a scribe).