Any driver knows that the braking system is a guarantee of safety and it is foolish to neglect it when it needs urgent repairs. In this article we will look at such an important event as replacing the piston of the front and rear brake calipers, we will analyze the peculiarities of their operation, their design, the main malfunctions and their symptoms.
Express caliper repair
To resolve this issue, you need to follow the steps below.
- To begin the main work, you need to unscrew the caliper by turning it clockwise. If the part does not turn, you can try turning it in the other direction - in some cars the caliper is unscrewed counterclockwise;
- The next step is to unscrew the piston. To do this we use a key. After the part is unscrewed, it can be removed from the cylinder;
- When all the necessary elements are unscrewed, they must be checked for corrosion. Areas where there is rust should be thoroughly cleaned. It is better to sand difficult areas;
- After fighting rust, you need to drain the fluid from the caliper. We hope there is no need to explain how to do this;
- As soon as the liquid is drained, remove the O-ring and thoroughly clean it. We also clean the place where the ring is attached. Finally, dry each part thoroughly. To do this, you can use a hairdryer or resort to natural drying. The latter is possible if you have a lot of extra time.
If all the above steps have been carried out, then all that remains is to grind the inner surface of the cylinder itself. Here we do everything without fanaticism
, the main thing is to remove dirt and rust.
Once grinding is complete, you can add brake fluid and return the rubber ring to its place.
Now the clean piston is inserted back. It is inserted under pressure, as it needs to go through the O-ring. During this procedure, special care must be taken with the boot - the main thing is not to damage it.
As mentioned above, the piston can be unscrewed both clockwise and counterclockwise. Therefore, this fact must be taken into account when screwing it in.
To keep the internal thread as close to the piston as possible, you just need to squeeze the handbrake flag.
Thanks to all the manipulations described above, you can successfully repair the caliper and get rid of its jamming.
Set for pressing/screwing in caliper pistons
- Price: $44.37
- Go to the store
In today’s review, I want to share with you my impressions of a tool for servicing car brakes, or, to be more precise, for pressing/screwing in pistons when replacing brake pads.
It just so happens that I have to periodically participate in such procedures. And over time, using improvised means such as a pry bar (for pressing) or a grinder key (for screwing in) became boring. Firstly, although the result is the same, it is inconvenient. Secondly, if you are tinkering with the brakes alone, then pressing the piston with a pry bar is quite problematic. In general, something had to be done about it. Therefore, I decided to acquire the appropriate tool. Aliexpress is full of different sets, differing primarily in the number of tools included in them. I decided not to waste time on trifles and purchase a full version that allows me to service calipers with two pistons.
It took the seller about a week to send the order after payment. The parcel was sent with a full track; anyone can view information about its journey from China to Belarus here.
At the post office they gave me a decent-looking box with a plastic suitcase inside. Exactly as you can see in the pictures in the ad. I would like to say that since the moment I received it, the set has already been tested several times, so this review is written with an eye to the experience of use. Because of this, the instrument does not look like new.
