ABC pump install, final step?
Thread Starter
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Joined: Dec 2013
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S55 Designo
ABC pump install, final step?
I have successfully installed a new tandem pump (never want to do that again.) I lost pressure in my driver side strut as it is now sunk to the ground. I have someone bringing a DAS tomorrow to run a rodeo and flush the system. But my question is can you even rodeo with the car sunk to the ground?
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Joined: May 2015
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From: Miami, FL
2003 CL 600
Once you install the pump and start the engine, apply light air pressure to the reservoir, it will prime the pump. Once the pump starts to move fluid, the car can be raised. Keep adding fluid as it spreads through the system, don't let the pump pull in air or you will have to prime it again possibly.
You can use DAS to command the car to the normal calibrated level, it will come up to normal. You can also push the button inside to raise the car and it will adjust where it can.
KEEP ADDING FLUID until the level stops dropping. You want the car at proper level, bled, and then do a final level check.
Rodeo works, but for quickest bleeding, just use the pitch actuation (front-rear), it will force the air out faster.
You can use DAS to command the car to the normal calibrated level, it will come up to normal. You can also push the button inside to raise the car and it will adjust where it can.
KEEP ADDING FLUID until the level stops dropping. You want the car at proper level, bled, and then do a final level check.
Rodeo works, but for quickest bleeding, just use the pitch actuation (front-rear), it will force the air out faster.
Thread Starter
Member
Joined: Dec 2013
Posts: 118
Likes: 3
S55 Designo
Once you install the pump and start the engine, apply light air pressure to the reservoir, it will prime the pump. Once the pump starts to move fluid, the car can be raised. Keep adding fluid as it spreads through the system, don't let the pump pull in air or you will have to prime it again possibly.
You can use DAS to command the car to the normal calibrated level, it will come up to normal. You can also push the button inside to raise the car and it will adjust where it can.
KEEP ADDING FLUID until the level stops dropping. You want the car at proper level, bled, and then do a final level check.
Rodeo works, but for quickest bleeding, just use the pitch actuation (front-rear), it will force the air out faster.
You can use DAS to command the car to the normal calibrated level, it will come up to normal. You can also push the button inside to raise the car and it will adjust where it can.
KEEP ADDING FLUID until the level stops dropping. You want the car at proper level, bled, and then do a final level check.
Rodeo works, but for quickest bleeding, just use the pitch actuation (front-rear), it will force the air out faster.
MBWorld Fanatic!
Joined: May 2015
Posts: 4,037
Likes: 1,012
From: Miami, FL
2003 CL 600
The system will bleed during the rodeo. I never had any luck priming the pump manually, air pressure does the trick right away, doesn't take much, I use a rag and a simple air nozzle into the reservoir, you'll hear the pump tone change when the fluid starts flowing. From there just keep adding until the level stabilizes, then start to raise it.
Thread Starter
Member
Joined: Dec 2013
Posts: 118
Likes: 3
S55 Designo
The system will bleed during the rodeo. I never had any luck priming the pump manually, air pressure does the trick right away, doesn't take much, I use a rag and a simple air nozzle into the reservoir, you'll hear the pump tone change when the fluid starts flowing. From there just keep adding until the level stabilizes, then start to raise it.
MBWorld Fanatic!
Joined: May 2015
Posts: 4,037
Likes: 1,012
From: Miami, FL
2003 CL 600
Just a little pressure will do, no reason to go crazy. Thats why I say a rag or your hand an a nozzle, if it doesn't seal that well there's no way to blow anything up.
MB instructions say to use an adaptor for the coolant pressure tester and apply 10-15psi.
MB instructions say to use an adaptor for the coolant pressure tester and apply 10-15psi.
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Thread Starter
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Joined: Dec 2013
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S55 Designo
That worked perfect, pump is primed and ran steady during the rodeo. The issue I'm having now is the power steering resovoir is leaking/bubbling a lot. What could be the cause?
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MBWorld Fanatic!
Joined: May 2015
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From: Miami, FL
2003 CL 600
If you have the front end up, you can turn it back and forth with the engine off and get almost all the air out.
Thread Starter
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S55 Designo
Never had to mess with it, the P/S system should bleed itself. Turn the wheel back and forth a couple times, stop and let the air settle out of the fluid. Repeat until there's no more air.
If you have the front end up, you can turn it back and forth with the engine off and get almost all the air out.
If you have the front end up, you can turn it back and forth with the engine off and get almost all the air out.
MBWorld Fanatic!
Joined: May 2015
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From: Miami, FL
2003 CL 600
If it's getting air in, it's probably leaking on the inlet side. I fought that on an audi I did, put 2 pumps in it, kept getting air, was worse the longer it ran. Finally found a tiny crack in the hose going to the pump, not enough to let fluid out, but it was drawing air in when the pump ran. Replaced that, it bled immediately.
Thread Starter
Member
Joined: Dec 2013
Posts: 118
Likes: 3
S55 Designo
If it's getting air in, it's probably leaking on the inlet side. I fought that on an audi I did, put 2 pumps in it, kept getting air, was worse the longer it ran. Finally found a tiny crack in the hose going to the pump, not enough to let fluid out, but it was drawing air in when the pump ran. Replaced that, it bled immediately.
