How to replace the SBC pump on a w211
#26
MBWorld Fanatic!
Join Date: Jan 2016
Location: In the Shadow of the Tetons
Posts: 2,423
Received 692 Likes
on
504 Posts
2013 ML350 Bluetec
The 59 million is the total amount of times the pump has been used such as accuations. It took 11 years to to hit 11 million. So I could say that, yes that if you hit the 59 miliion you might get a red light however the SBC would be so old almost positive it would fail before that. The second number 18100 is the pedal count. I just didn't take a photo before I swapped out the pump to see my old pedal count.
(11 years, 11,000,000 "uses")
Is that revolutions of the pump motor? I'm trying to understand the significance of these numbers...
#28
http://www.benzworld.org/forums/w211...ntrol-sbc.html
I have seen references to the SBC having a finite life based on x actuations. How does this value relate to the 59 million from above?
"The SBC has a finite life (300,000 actuations) so sooner or later you will need a new one."
I have seen references to the SBC having a finite life based on x actuations. How does this value relate to the 59 million from above?
"The SBC has a finite life (300,000 actuations) so sooner or later you will need a new one."
#29
MBWorld Fanatic!
Join Date: Jan 2009
Location: V E G A S
Posts: 9,115
Received 1,749 Likes
on
1,394 Posts
1922 Ford Model T / no OBD
When I have never seen official MB document about SBC push count, from what some technicians post here, there is no firmly set number of pushes.
Variations are between 500,000 and 600,000 pedal pushes, what brings me to conclusion that other factors make the difference aka pump activation, maybe time and who knows what else.
Now think about pump activation.
Each time you open the door after longer stop- the pump activates. Each time there is moisture on brakes - pump activates. Also when you keep brake pedal coming slowly to stop - you fan it to some degree, so pressure is depleted and pump might have to come several times with single brake push.
That is why pump activation are coming to high numbers.
Variations are between 500,000 and 600,000 pedal pushes, what brings me to conclusion that other factors make the difference aka pump activation, maybe time and who knows what else.
Now think about pump activation.
Each time you open the door after longer stop- the pump activates. Each time there is moisture on brakes - pump activates. Also when you keep brake pedal coming slowly to stop - you fan it to some degree, so pressure is depleted and pump might have to come several times with single brake push.
That is why pump activation are coming to high numbers.
Last edited by kajtek1; 03-11-2016 at 01:11 PM.
#30
Senior Member
Awesome!!!! I have access to XENTRY and will do it one night after work. I have the message but am dragging this out. I officially know it is the SBC time frame expired but am wondering about how much longer I actually have before it goes out completely?
#31
Junior Member
SBC really looks like it only has 3 common fail modes. Count, pressure reservoir(easy diy) and the motor itself (brushes are only real wear item, maybe change bearing also while motor is open).
Internal hydralics are in fluid bath and do not seem to fail (but are monitored anyway)
The one seal to the outside, motor shaft, never seen leak, they do weep.
We need somebody to document the brushes in motor and we are all set.
Also, i think it is super important to properly flush this system to avoid leaving air in emergency circuit, which kills breaking power in backup mode. Not a problem when pump is running as system has unlimited pump volume available. Star has a test for air in emergency circuit.
Internal hydralics are in fluid bath and do not seem to fail (but are monitored anyway)
The one seal to the outside, motor shaft, never seen leak, they do weep.
We need somebody to document the brushes in motor and we are all set.
Also, i think it is super important to properly flush this system to avoid leaving air in emergency circuit, which kills breaking power in backup mode. Not a problem when pump is running as system has unlimited pump volume available. Star has a test for air in emergency circuit.
#32
Purchased Mercedes Benz reman. SBC online for about $817 ($970 - $153 old core return). Part arrived in a few days in a MB sealed box. Dealer prices for same reman. part ranged from $1070 to over $1300.
#33
The following users liked this post:
hangit06 (03-23-2016)
#38
Member
Thread Starter
I know a while back when I was looking up multiplexers I came across a German forum and the person used a DS708, No idea if it worked. Also that looks really similar to my X431 Creader VIII
Last edited by CDIJeff; 04-05-2016 at 11:30 AM.
The following users liked this post:
Gangrene3075 (04-06-2016)
#39
#40
Pressure reservoir (accumulator) replacement
SBC really looks like it only has 3 common fail modes. Count, pressure reservoir(easy diy) and the motor itself (brushes are only real wear item, maybe change bearing also while motor is open).
Internal hydralics are in fluid bath and do not seem to fail (but are monitored anyway)
The one seal to the outside, motor shaft, never seen leak, they do weep.
We need somebody to document the brushes in motor and we are all set.
Also, i think it is super important to properly flush this system to avoid leaving air in emergency circuit, which kills breaking power in backup mode. Not a problem when pump is running as system has unlimited pump volume available. Star has a test for air in emergency circuit.
Internal hydralics are in fluid bath and do not seem to fail (but are monitored anyway)
The one seal to the outside, motor shaft, never seen leak, they do weep.
We need somebody to document the brushes in motor and we are all set.
Also, i think it is super important to properly flush this system to avoid leaving air in emergency circuit, which kills breaking power in backup mode. Not a problem when pump is running as system has unlimited pump volume available. Star has a test for air in emergency circuit.
#41
Out Of Control!!
Join Date: Jul 2003
Location: North Scottsdale, AZ
Posts: 15,903
Received 4,446 Likes
on
3,154 Posts
'71 Pinto
The following users liked this post:
forcedawd (05-13-2016)
#45
Member
Thread Starter
The numbers changed I just got a vin match one from the website. Really the numbers mean nothing to us just vin match it with a reputable company or dealer. Then you will be fine.
#46
Former Vendor of MBWorld
If you need a verification of the correct SBC unit, feel free to PM me your VIN. This memorial holiday FCP is running a 10% off orders over $199 promotion. You can use the code in the banner on checkout and keep in mind these items include free shipping, lifetime replacement warranty and unlimited returns. Have a safe holiday
--Kyle
--Kyle
#48
#50
Member
Looking on google its 50/50 you can try if it works it works. Otherwise the Multiplexer is the error proof way. Also I don't see a way to bleed the brakes from that unit.
I know a while back when I was looking up multiplexers I came across a German forum and the person used a DS708, No idea if it worked. Also that looks really similar to my X431 Creader VIII
I know a while back when I was looking up multiplexers I came across a German forum and the person used a DS708, No idea if it worked. Also that looks really similar to my X431 Creader VIII
I deactivated and bled the brakes with this unit.
http://www.ebay.com/itm/Electronic-P...QAAOSwT4lWREbv