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AHC pump changing


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I suggest do it after you fit the AHC pump as its better to bleed lines as AHC fluid is subject to lot of moisture and its good if you change the fluid and bleed it once for all.

Here is the procedure to bleed AHC pump

One can of the ahc fluid is usually plenty.

1. Set the vehicle all the way to low (Reservoir full)

2. Remove all of the old fluid from reservoir. Fill with new clean fluid, I usually put the whole can in.

3. Start vehicle and let suspension equalize to "n" position.

4. Turn vehicle off.

5. Start at one of the back accumulators (doesn't matter which one) and using a hose on the bleeder, open very slowly and let weight of vehicle push fluid out. Close bleeder when vehicle is close to bottom.

THIS IS THE STEP YOU COULD GET SQUISHED IF YOU ARE NOT CAREFUL!!!

6. Start vehicle and repeat steps for each corner accumulator.

7. Usually one cycle at each corner is sufficient. If you are going to do it more than once you will need more than one can of fluid.

Cautions - don't crack bleeders while car is running. Vehicle will try to compensate for the leaking corner and you will have a big high pressure mess.

Fluid resembles very slippery brake fluid and is a PITA to clean up - so keep that in mind.

Also this is usually done every 60,000 km.

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