Irest SL A28-1 Massage Chair Jerking Bump Fix

ID: 147321

Description: This guide is about how to fix the jerking...

Steps:

  1. The chair is one like this.
    2. Step image
  2. Fold backrest forward by pressing the release tab in and under the chair (Arrowed) and push the backrest forward.
  3. On the two last pictures you can see the release lock and tap after the backrest is folded forward
    4. Step image Step image Step image
  4. Remove the screw for the cord inlet (Marked as 1) and remove the cord cover
  5. Remove the 5 screws (marked 2) for the back cover - Please note they are NOT all the same size, so pay attention to the positions
    6. Step image Step image
  6. With the cord cover (#1 in previous step) removed, remove the two connectors
  7. The connectors on my model was protected with plastic strips to prevent me from releasing the lock tap - didn't work - I took the picture AFTER I had removed the cover so it was easier to see what the connectors looked like
  8. Remove the strips or pull them towards the wires (Upwards) and use a flathead screwdriver to prise the lock open and remove the connector
  9. Remove the back cover
    10. Step image
  10. In my case I looked at the mechanism and saw no immediate failures
  11. I then noticed that a black strap (Arrowed) was showing signs of being curled/crumbled
  12. Further examination shows that the strap, which goes from top to bottom, was not aligned 100 % centered between the massage wheels (I try to show that with the red line) and the strap had become a little loose
  13. The result was the that the right wheel was sort of "picking up" the strap, so both wheels was on the same side of the strap
  14. At some point the right massage wheel had to cross back again over the strap hereby crumbling it and giving this jerky bump.
    15. Step image
  15. The fix is to tighten the strap - there are two ways
  16. 1 - Remove the frame with wheels and rollers and re-align + tighten the strap
  17. 2 - Tighten and partly re-align the strap
  18. I opted for solution 2
  19. I tightened the strap at the botton of the frame, because this is where I had space to manouvre
  20. I positioned the strap more to the left so it got centered
  21. I used a 1.5 mm drill to prepare a whole in the frame so the plate screw (See picture 2) does not rapture the woodden frame
  22. I used a plate screw to secure the strap in the new position
    23. Step image Step image
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