AHC, Final bleed 2006 100 series. USA. Questions/Help (1 Viewer)

[Hollywood]

After replacing the Main AHC Accumulator Cylinder and rusted line Located below the driver seat. I filled the reservoir and pulled the pump relay and ran the AHC pump bleeding the line to the pump attenuator then blead the line from the attenuator to the AHC Main Accumulator Cylinder Bleeder below the driver seat, which also bleeds the New AHC Main Accumulator Cylinder. Topped up revisor and ready to bleed the rest of the system at each wheel's spherical accumulator bleeder. I had removed and reinstalled the left front spherical accumulator for access while replacing the old Main Accumulator Cylinder I line so it needs to be blead as well as the rest while I am in bleeding mode.. I was looking at bleeding instructions #3 posted by (Jim-Chow June 2007) and had a few questions. I planned to lower the Cruisers tires on four cinderblocks before bleeding using his #3 instructions. I have jumped the Ts & E1 on the DLC1 box.
I understand I am then to start the Cruiser and then to push the height control Down button 5 times within 5 seconds of starting the Cruiser, verify flashing light off, set Dampening Mode to Comfort, then push the height control button to UP, holding it for 10 seconds... Now the pump runs and pumps up the system so it may be blead...
1s Question: As the Cruiser raises do you bleed the system before turning the engine off making sure the height switch is set to N neutral not HI?
2N Question: Or do you make sure the Cruiser raises and set the height control switch to N neutral so as not to go to HI mode, turn off the engine/ignition, remove jumper from DLC1. Then start the engine make sure height selector is on and in N neutral mode and bleed system/all four corners one at a time of course. Or do you turn the engine on & off each time ( building pressure/ raising Cruser ) as you bleed each of the four corner accumulators? Have not gotten to the final bleed as the weather here has been too cold to be in the garage much less bleed a cold Cruiser.......

 

[modus]

Following this

 

[baltistyle]

Ime you turn off the car so the pump doesn’t try to fill the line at HIGH pressure. IMO it’s all about keeping the air out and keeping the reservoir full. Put car in low and suck out old ahc fluid. Fill reservoir. Crack each corner while in low. Put a tube on it and have it in fluid so no air goes backward into the nipple. Next, raise the vehicle making sure the reservoir does not get low while filling the system. Go into hi on ahc. Make sure reservoir is full. Now while in hi, bleed each corner, making sure reservoir is full. You will have sucked old fluid out of the lines into the extended AHC shock and when bleeding from high, you will get most of the fluid out versus if you went back into low that fluid would push towards the reservoir. Crack the bleeder slowly as there will be more pressure in hi, car off each time of bleeding. Now when you turn car on, it will raise filling the sustem with new fluid again. Do. This a few times logically trying to bleed out the fluid before it goes back to the reservoir. You could empty out the reservoir and flush that along the way because some old fluid will go back into the reservoir during the first few cycles up and down..

Most people don’t really talk about using any tools for this, but I think a vacuum brake bleeder is a good tool as well as a pressure filler. This just helps push fluid through without introducing air and I think would help many people in their maintenance experiences.