![Replacing the chamber block of Hiblow GJ-H Series 1 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-1-1.png)
Step 1Â
Remove the knob bolt.
![Replacing the chamber block of Hiblow GJ-H Series 2 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-2-1.png)
Step 2
Remove the filter cover.
![Replacing the chamber block of Hiblow GJ-H Series 3 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-3-1.png)
Step 3
Remove the filter.
![Replacing the chamber block of Hiblow GJ-H Series 4 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-4-1.png)
Step 4
Turn the pump up side down. Remove the bolts from the four corners. Use 8mm each side wrench.
![Replacing the chamber block of Hiblow GJ-H Series 5 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-5-1.png)
Step 5
Use a screwdriver to pry open upper and lower housings as shown in photo.
![Replacing the chamber block of Hiblow GJ-H Series 6 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-6-1.png)
Step 6
Remove the sound absorber.
![Replacing the chamber block of Hiblow GJ-H Series 7 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-7-1.png)
Step 7
Remove the screws hold the chamber block. (4screws on each side.)
![Replacing the chamber block of Hiblow GJ-H Series 8 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-8-1.png)
Step 8
Remove the L-tube from the casing nozzle.
![Replacing the chamber block of Hiblow GJ-H Series 9 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-9.png)
Step 9
Remove the U-lock nut securing diaphragm from only one side. 150/200GJL : 7mm each side wrench. Use the box driver to tighten (or loosen) the U-lock nut.
![Replacing the chamber block of Hiblow GJ-H Series 10 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-10.png)
Step 10
Remove one of the diaphragm mounting block from the rod, and pull out the other diaphragm mounting block from the pump body with the rod. Remove the other diaphragm mounting block from the rod. This completes the chamber block removal procedure.
Step 1
Install a new diaphragm mounting block on the actuating rod. Set the actuating rod in line with groove and tighten the U-lock nut(s).
• Use new U-lock nut and washer only that come as replacement parts to prevent loosening and causing failure of the pump
![Replacing the chamber block of Hiblow GJ-H Series 11 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-step-1-1.png)
![Replacing the chamber block of Hiblow GJ-H Series 12 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-step-1.1.png)
Step 2
Insert the actuating rod in accordance with the gap of the frame.
![Replacing the chamber block of Hiblow GJ-H Series 13 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-step-2-1.png)
Step 3
Secure the diaphragm mounting block on other side and tighten with washer and U-lock nut using the box driver. Make sure the gaps between the actuating rod and the electromagnet are even.
![Replacing the chamber block of Hiblow GJ-H Series 14 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-step-3-1.png)
Step 4
Connect L-tube to the casing block and secure the casing with the screws. (4screws on each side.) Install the other casing block at the same way.
![Replacing the chamber block of Hiblow GJ-H Series 15 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-step-4-1.png)
Step 5
Insertion of SM Bar
![Replacing the chamber block of Hiblow GJ-H Series 16 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-step-5-1.png)
Step 6
Insertion completes.
![Replacing the chamber block of Hiblow GJ-H Series 17 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-step-6-1.png)
Step 7
Install the sound absorber.
![Replacing the chamber block of Hiblow GJ-H Series 18 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-step-7-1.png)
Step 8
Place the upper housing back on body. (Be extremely careful about the cord bushing.) If the pump makes an abnormal noise, this may be sign of improper positioning of the cord bushing.
![Replacing the chamber block of Hiblow GJ-H Series 19 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-step-8-1.png)
Step 9
Turn the pump body upside down and tighten bolts.
![Replacing the chamber block of Hiblow GJ-H Series 20 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-step-9.png)
Step 10
Replace the filter pad. • Remove all dust that collected on pad. • If it heavily soiled, use a neutral detergent to wash it, rinse it with water, and dry it well out of direct sunlight before reinstalling.
![Replacing the chamber block of Hiblow GJ-H Series 21 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-step-10.png)
Step 11
Place the filter cover back on properly. Secure it with the Knob bolt. Please check whether the pump sounds unusual and the amount of discharged air is greatly reduced.
![Replacing the chamber block of Hiblow GJ-H Series 22 Replacing the chamber block of Hiblow GJ-H Series](https://www.pumpular.com/wp-content/uploads/2022/10/Replacing-the-chamber-block-step-11.png)