How to flush ahc fluid DIY
09-14-22, 07:51 PM
#1
How to flush ahc fluid DIY
These are the steps to flush the ahc fluid.
1. Park on level surface mark 'N' fluid level
2. Put vehicle suspension in 'L' mode mark fluid level
3. Turn off vehicle
4. Extract all old fluid from reservoir
5. Fill reservoir to the top with new AHC fluid
6. Remove all 4 rubber caps at each bleeder screw
7. Bleed driver side front actuator by loosening bleeder, when suspension bottoms out, immediately tighten bleeder screw.
8. Start vehicle and wait for the suspension to automatically level itself, then turn off vehicle.
9. Check fluid level
10. Repeat Step 7 and 9 for the passenger side front actuator.
11. Repeat Step 7 and 9 for the driver side rear actuator.
12. Repeat Step 7 and 9 for the passenger side rear actuator.
Always check the fluid level in the reservoir, don't let it get too low. Go through steps 7-12 till the fluid looks clean flowing through clear. If you get air in the system very good chance the truck will be stuck in low mode until you bleed the air out. You will notice the smoothness in the ride quality and raising and lowering the ahc.
When the suspension bottoms out after cracking the bleeder it will be as low as it is in low mode, that is how you know to tighten the bleeder. Also I believe there is a 5th bleeder by the glodes I do not know if this needs to be bled maybe another more experienced member can chime in.
Added by hankinid 9/17/22
The 5th bleeder is normally on the manifold where fluid comes from the pump and then goes 5 ways. I work in order starting with the shortest tube. I'd suggest tightening the bleeder when you see no bubbles in the clear tubing. Did I mention that a good pump in invaluable? $20 and up... I'd also write that you'll find a ton of AHC knowledge on MUD.
1. Park on level surface mark 'N' fluid level
2. Put vehicle suspension in 'L' mode mark fluid level
3. Turn off vehicle
4. Extract all old fluid from reservoir
5. Fill reservoir to the top with new AHC fluid
6. Remove all 4 rubber caps at each bleeder screw
7. Bleed driver side front actuator by loosening bleeder, when suspension bottoms out, immediately tighten bleeder screw.
8. Start vehicle and wait for the suspension to automatically level itself, then turn off vehicle.
9. Check fluid level
10. Repeat Step 7 and 9 for the passenger side front actuator.
11. Repeat Step 7 and 9 for the driver side rear actuator.
12. Repeat Step 7 and 9 for the passenger side rear actuator.
Always check the fluid level in the reservoir, don't let it get too low. Go through steps 7-12 till the fluid looks clean flowing through clear. If you get air in the system very good chance the truck will be stuck in low mode until you bleed the air out. You will notice the smoothness in the ride quality and raising and lowering the ahc.
When the suspension bottoms out after cracking the bleeder it will be as low as it is in low mode, that is how you know to tighten the bleeder. Also I believe there is a 5th bleeder by the glodes I do not know if this needs to be bled maybe another more experienced member can chime in.
Added by hankinid 9/17/22
The 5th bleeder is normally on the manifold where fluid comes from the pump and then goes 5 ways. I work in order starting with the shortest tube. I'd suggest tightening the bleeder when you see no bubbles in the clear tubing. Did I mention that a good pump in invaluable? $20 and up... I'd also write that you'll find a ton of AHC knowledge on MUD.
Last edited by 05ls430518; 09-17-22 at 02:30 AM.
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hankinid (09-16-22)
09-16-22, 10:58 PM
#2
Pole Position
Italics are mine...
These are the steps to flush the ahc fluid.
1. Park on level surface mark 'N' fluid level
2. Put vehicle suspension in 'L' mode mark fluid level
3. Turn off vehicle
4. Extract all old fluid from reservoir
A vacuum pump with with a jar to suck in old fluid and some plastic tube give you a good visual and gives you plenty of warning when the actuator is purged.
5. Fill reservoir to the top with new AHC fluid
6. Remove all 4 rubber caps at each bleeder screw
7. Bleed driver side front actuator by loosening bleeder, when suspension bottoms out, immediately tighten bleeder screw.
Use a piece of clear tubing 3-4 inches long and you can see when the bubbles stop.
8. Start vehicle and wait for the suspension to automatically level itself, then turn off vehicle.
9. Check fluid level
10. Repeat Step 7 and 9 for the passenger side front actuator.
11. Repeat Step 7 and 9 for the driver side rear actuator.
12. Repeat Step 7 and 9 for the passenger side rear actuator.
Always check the fluid level in the reservoir, don't let it get too low. Go through steps 7-12 till the fluid looks clean flowing through clear. If you get air in the system very good chance the truck will be stuck in low mode until you bleed the air out. You will notice the smoothness in the ride quality and raising and lowering the ahc.
When the suspension bottoms out after cracking the bleeder it will be as low as it is in low mode, that is how you know to tighten the bleeder. Also I believe there is a 5th bleeder by the glodes I do not know if this needs to be bled maybe another more experienced member can chime in.
1. Park on level surface mark 'N' fluid level
2. Put vehicle suspension in 'L' mode mark fluid level
3. Turn off vehicle
4. Extract all old fluid from reservoir
A vacuum pump with with a jar to suck in old fluid and some plastic tube give you a good visual and gives you plenty of warning when the actuator is purged.
5. Fill reservoir to the top with new AHC fluid
6. Remove all 4 rubber caps at each bleeder screw
7. Bleed driver side front actuator by loosening bleeder, when suspension bottoms out, immediately tighten bleeder screw.
Use a piece of clear tubing 3-4 inches long and you can see when the bubbles stop.
8. Start vehicle and wait for the suspension to automatically level itself, then turn off vehicle.
9. Check fluid level
10. Repeat Step 7 and 9 for the passenger side front actuator.
11. Repeat Step 7 and 9 for the driver side rear actuator.
12. Repeat Step 7 and 9 for the passenger side rear actuator.
Always check the fluid level in the reservoir, don't let it get too low. Go through steps 7-12 till the fluid looks clean flowing through clear. If you get air in the system very good chance the truck will be stuck in low mode until you bleed the air out. You will notice the smoothness in the ride quality and raising and lowering the ahc.
When the suspension bottoms out after cracking the bleeder it will be as low as it is in low mode, that is how you know to tighten the bleeder. Also I believe there is a 5th bleeder by the glodes I do not know if this needs to be bled maybe another more experienced member can chime in.
I'd suggest tightening the bleeder when you see no bubbles in the clear tubing.
Did I mention that a good pump in invaluable? $20 and up...
I'd also write that you'll find a ton of AHC knowledge on MUD.
09-17-22, 02:28 AM
#3
The 5th bleeder is normally on the manifold where fluid comes from the pump and then goes 5 ways. I work in order starting with the shortest tube.
I'd suggest tightening the bleeder when you see no bubbles in the clear tubing.
Did I mention that a good pump in invaluable? $20 and up...
I'd also write that you'll find a ton of AHC knowledge on MUD.
I'd suggest tightening the bleeder when you see no bubbles in the clear tubing.
Did I mention that a good pump in invaluable? $20 and up...
I'd also write that you'll find a ton of AHC knowledge on MUD.
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