Re-assembling airbag (Key Box)
After the activation, the key ball is separated from the key box.
To reuse the vest, the key ball and a new CO2 cartridge need to be reinstalled to the key box as following steps.
1
![](https://www.hit-air.com/archives/006/201808/625eda5187b1a7f4b55f96f0788a2330.jpg)
Prepare a set of the hexagon wrench and setting bolt. (The hexagon wrench and screw bolt are provided with a vest)
2
![](https://www.hit-air.com/archives/005/202103/c0fe165e736c27e0f944f28dfbc8801b.jpg)
Insert the setting bolt to the bottom of the key box.
3
![](https://www.hit-air.com/archives/005/202103/e880c9f8e56190ee7c69e7741c9d3171.jpg)
Screw the setting bolt by the hexagon wrench. The metal hole of the key box comes down accordingly.
4
![](https://www.hit-air.com/archives/005/202103/bfed8f237ff591ca1a2e2993b913f58a.jpg)
Put the key ball and its metal ring to the metal hole
5
![](https://www.hit-air.com/archives/005/202103/a310e4143a5d927fb97163082757ed2e.jpg)
Lower the red guard to check if the key ball is installed correctly. In case the red guard doesn’t come down fully, the key ball is not installed correctly.
6
![](https://www.hit-air.com/archives/005/202103/3e616f010729358f1ae400545884ff34.jpg)
Unscrew the setting bolt and take it away from the bottom of the key box.
7
![](https://www.hit-air.com/archives/006/201808/1e03d81afc144a7b8010d25720ba79ea.jpg)
Lift the red guard to the upper position.
8
![](https://www.hit-air.com/archives/005/202104/c2b904d07ce586ecce06fae38962643f.jpg)
Unscrew used CO2 cartridge and take it away from the key box.
![](https://www.hit-air.com/archives/006/201808/c4e8b370f7c93c3673da39982cf3fadc.jpg)
![](https://www.hit-air.com/archives/005/202103/94918d15360dcaa31e1c6bc1ec4e3bfd.jpg)
9
![](https://www.hit-air.com/archives/006/201808/a269337086ee694a488218b3aace63fc.jpg)
Remove air from the vest.
10
![](https://www.hit-air.com/archives/006/201808/63883b986d2d1627d65eae0d6a69ec55.jpg)
Re-pack all air cushions and fasten all buttons and Velcro.
11
![](https://www.hit-air.com/archives/006/201808/8c69edf167895210b264d3808f1f007f.jpg)
Screw a new CO2 cartridge. (Please confirm if the seal of the cartridge is not punctured and it's new.)
12
![](https://www.hit-air.com/archives/006/201808/6efaa27d5193684d17792b60bb3d9cbd.jpg)
Take the connector out through the hole of the key box cover.
Close the zipper around the key box.
The end of Re-assembly.