How to adjust a rear derailleur. Adjusting a rear derailleur

Hello everyone!
How to fix a bike derailleur hange.
Happens often, what we do is drop the bike, lean it against the curb and scratch the rear derailleur, bend the bike hook and because of this, our switch can break. It flies between the spokes and the big star cassettes. The chain jams and the shifter breaks. The bike shifts poorly. Wrap the film so as not to dirty the sprockets. How to untangle a bicycle chain. The first thing we need to do is make sure the wheel is properly seated in the dropouts. I noticed that the eccentric was installed incorrectly. Fix it. The clamp must be in the side of the brake disk. Center the wheel and tighten the eccentric by hand as much as possible. The wheel should not wobble. Check that the hook cover is tightened. How to remove the rear derailleur for MTB. Oops) This often happens. Chik! Our rear derailleur adapter is bent! It is called a bicycle hook. First try to center it with a hammer. From the front, we centered it. Next, use a special hook centering tool. This will show us how bent the hook is. Fixing a bent hanger. It happens that the bend is very strong and the hanger bursts. When it bursts, it needs to be replaced. In this case, we are lucky that the hanger gives way and does not burst. I have to tinker.
There is still a bit left. Boring for a long time, but this is a detailed instruction on how to center the hook of the rear derailleur of the bike. To order. Install rear derailleur for mtb Screwing the switch is also difficult. not always turns out quickly and do it. The hexagon keeps jumping. Be sure to check the pulleys. They have to be tight. Let's start with the rear derailleur. Adjust a rear derailleur. We have adjusting screws to the switch did not go further than the cassette on the spokes of the wheel limit on the large star and on the small star of the cassette Check everything step by step. Limit the small star so that the chain does not fly to the frame. Now adjust the cable tension. You can do it like oursiffer switch, which is located on the handlebars of a bicycle, and you can do it on the rear derailleur, and here and there we have a lamb for cable tension. Now change the switch tension. is the location between the big star and the top roller of the switch. Because the rear derailleur is a budget Shimano Tourney, the springs of this switch are weak. Little life hacks how to help switch spring to work properly when casing help. fasten the cable cover to the frame and it allows the spring to work more efficiently. Do such a life hack with a housing and your switch will work much better! Gears jump perfectly. Check. Rear derailleur backlash is bad! We can not fix this, but we try to set it up as is. The next time I turn this fatbike on, it will be different. A few gears jumping back and forth need attention? The cassette should also be of good quality. If a cheap San Race brand cassette is installed, it will work poorly. It is better to choose Shimano or Sram. It doesn't get any better!
Cycling enthusiasts will find this video fascinating.

00:00 How to fix a bike derailleur hanger.
00:10 Bike shifts badly.
00:20 How to untangle a bike chain.
01:07 The quick release is not installed correctly, fix it.
01:37 It is important to tighten the quick release tightly so that there is no play in the wheel.
01:53 How to remove rear derrailleur for mtb bike.
02:03 Oops)).
02:24 The rear derailleur holder is crooked.
02:40 Aligning derailleur hangers.
03:04 Fix a bent derailleur hanger.
03:20 Use a tool to see how bent the rear derailleur holder is.
05:00 Check the straightness of the bike derailleur hook.
05:43 Install rear derailleur for mtb bike.
06:50 Tighten the rollers of the rear derailleur.
07:03 Adjusting a rear derailleur.
07:55 Set the derailleur roller in line with the small star of the cassette with the h screw.
08:11 Adjust the cable tension of the rear bike derailleur.
08:38 Adjusting the position of the derailleur rollers relative to the large sprockets of the cassette bicycle.
09:00 Fixing the shifting housing with a cable tie so that it springs the rear derailleur of the bicycle.
09:23 Small adjustments and now everything works.