Louis
29-02-2008, 05:57 PM
Without using MUT11.
Changed all the rear diff fluids last week (and atf gearbox, (all amsoil), and plugs, denso ik22)
Just to say it was much easier bleeding the ayc this time.
I had the diff out as I was checking something else out, so we filled with Amsoil synthetic hypoid gear oil. And filled the clutch packs with amsoil synthetic trans fluid before putting the diff back up. (easier than doing with diff in place, but it’s still straight forward to do with the diff in place))
The AYC bleeding procedure went.
As follows:
You need two people.
Car up on 4 axle stands, all 4 wheels off the ground handbrake off.
Open the bleed nipples on the diff under the car.
Open the ayc reservoir and let the fluid drain out.
Once empty go back under to the bleed nipples and close them, but not tight.
Then pour in new AYC or Amsoil ATF into the reservoir. Open the bleed nipples and the fluid start working its way down.
Then:
One person sits in car.
Start the engine, put car in drive, (DON’T TOUCH ACCELERATOR PEDAL).
Your dash lights, ayc asc and abs will all light up as the system is confused, that’s cool.
All 4 wheels will turn slowly, if you are concerned they are picking up speed brake lightly but keep the wheels turning.
Turn steering wheel to full left lock.
Other person under car opens left bleed nipple, (take foot off brake if you had it on)
Hold steering at full left lock, and other person opens left bleed nipple. You should hear the ayc pump activate.
If it does not activate go into trip mode and go into 2nd gear, or if car is a manual use clutch and go into second gear, turn steering full right sand then full left,(YOU STILL DON’T NEED TO ACCERERATE).
You will hear the pump activate and the ayc fluid will start to pump out.
When fluid is coming out of left nipple close the nipple.
Turn steering wheel full right, and open right nipple, fluid will come out of the nipple, when this happens, close the nipple. Repeat this a couple of times.
REMEMBER TO KEEP TOPPING UP THE RESEVOIR IN BETWEEN BLEEDS.
Tighten both nipples, and top up the reservoir.
Switch off the engine and get the car on the ground. When you start the car the dash lights will still be mental and lit up. Go for a short drive, and the light s will go out on there own as the car realises all is well.
That is it done!.
The last time I did this I had to go through the gears turning the steering wheel from lock to lock to activate the ayc pump, but this time the pump activated as soon as the steering wheel went full lock, and the fluid came through fast. The only thing I did different this time was not to drag the brake as the wheels were turning. Last time I did this I was a bit chicken!.
This is the second time I have used this method to change the ayc in the rear diff (first time 9000 miles ago), and both times no problems.
After the first time I did it, I drove to mitsy with the ayc relay unplugged and got them to check it and they said it was fine, and I had no issues at all.
It is important to turn the steering to the left when bleeding the left side, and to the right (full lock) when bleeding the right side, as this will activate the proprtioning and directional control valves.
I have added this diagram for clarity.
It is also important not to drag the brakes when doing this, as this will affect thhe operation of the pump and valves etc, (the ayc won't fight the brakes, so it won't activate if the brakes are on)
If you click on the diagram it opens in another window and you can magnify in to the details.
Changed all the rear diff fluids last week (and atf gearbox, (all amsoil), and plugs, denso ik22)
Just to say it was much easier bleeding the ayc this time.
I had the diff out as I was checking something else out, so we filled with Amsoil synthetic hypoid gear oil. And filled the clutch packs with amsoil synthetic trans fluid before putting the diff back up. (easier than doing with diff in place, but it’s still straight forward to do with the diff in place))
The AYC bleeding procedure went.
As follows:
You need two people.
Car up on 4 axle stands, all 4 wheels off the ground handbrake off.
Open the bleed nipples on the diff under the car.
Open the ayc reservoir and let the fluid drain out.
Once empty go back under to the bleed nipples and close them, but not tight.
Then pour in new AYC or Amsoil ATF into the reservoir. Open the bleed nipples and the fluid start working its way down.
Then:
One person sits in car.
Start the engine, put car in drive, (DON’T TOUCH ACCELERATOR PEDAL).
Your dash lights, ayc asc and abs will all light up as the system is confused, that’s cool.
All 4 wheels will turn slowly, if you are concerned they are picking up speed brake lightly but keep the wheels turning.
Turn steering wheel to full left lock.
Other person under car opens left bleed nipple, (take foot off brake if you had it on)
Hold steering at full left lock, and other person opens left bleed nipple. You should hear the ayc pump activate.
If it does not activate go into trip mode and go into 2nd gear, or if car is a manual use clutch and go into second gear, turn steering full right sand then full left,(YOU STILL DON’T NEED TO ACCERERATE).
You will hear the pump activate and the ayc fluid will start to pump out.
When fluid is coming out of left nipple close the nipple.
Turn steering wheel full right, and open right nipple, fluid will come out of the nipple, when this happens, close the nipple. Repeat this a couple of times.
REMEMBER TO KEEP TOPPING UP THE RESEVOIR IN BETWEEN BLEEDS.
Tighten both nipples, and top up the reservoir.
Switch off the engine and get the car on the ground. When you start the car the dash lights will still be mental and lit up. Go for a short drive, and the light s will go out on there own as the car realises all is well.
That is it done!.
The last time I did this I had to go through the gears turning the steering wheel from lock to lock to activate the ayc pump, but this time the pump activated as soon as the steering wheel went full lock, and the fluid came through fast. The only thing I did different this time was not to drag the brake as the wheels were turning. Last time I did this I was a bit chicken!.
This is the second time I have used this method to change the ayc in the rear diff (first time 9000 miles ago), and both times no problems.
After the first time I did it, I drove to mitsy with the ayc relay unplugged and got them to check it and they said it was fine, and I had no issues at all.
It is important to turn the steering to the left when bleeding the left side, and to the right (full lock) when bleeding the right side, as this will activate the proprtioning and directional control valves.
I have added this diagram for clarity.
It is also important not to drag the brakes when doing this, as this will affect thhe operation of the pump and valves etc, (the ayc won't fight the brakes, so it won't activate if the brakes are on)
If you click on the diagram it opens in another window and you can magnify in to the details.