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Not sure what this is for but I'm sure it's not working
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Posted 10/9/2016 7:54 PM
AIGroup
Regular


Date registered: Sep 2008
Location: Albany, NY
Vehicle(s): 1986 230GE Cabriolet
Posts: 58
50
Not sure what this is for but I'm sure it's not working

Was investigating a fuel leak behind the fuel tank and noticed this part mounted on the frame and which is completely rusted.
There 2 hydraulic line attached to the body of the part, so I assume this is brake or differential related?
There's an arm that's not connected.
I am very much a newby to hydraulic issues so thanks in advance for the education.





(Is this part of the brake hydraulics.JPG)



(Shot from directly under.JPG)



(This piece wasn't connected.JPG)



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Attachments Is this part of the brake hydraulics.JPG (98KB - 0 downloads)
Attachments Shot from directly under.JPG (99KB - 0 downloads)
Attachments This piece wasn't connected.JPG (77KB - 0 downloads)
#234100
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Posted 10/9/2016 8:09 PM
DUTCH
Administrator Doppelgänger




Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
5000
RE: Not sure what this is for but I'm sure it's not working

It adjusts the brake pressure on the rear brakes to compensate for load differences.



(BrakePressureRegulator.jpg)



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Attachments BrakePressureRegulator.jpg (79KB - 0 downloads)
#234102 - in reply to #234100
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Author
Posted 10/9/2016 8:33 PM
AIGroup
Regular


Date registered: Sep 2008
Location: Albany, NY
Vehicle(s): 1986 230GE Cabriolet
Posts: 58
50
Re: Not sure what this is for but I'm sure it's not working

Thanks Dutch - so that's what part # 56 is for.
And with it being disconnected it doesn't adjust the pressure.
I don't haul anything in the truck, but in case I want to put the regulator back in working order - I would order the assembly from MB?
Or has anyone had any success with rebuilding this monster?
#234103 - in reply to #234100
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Posted 10/10/2016 6:43 PM
Aircruiser
Extreme Veteran




Date registered: Aug 2011
Location: Atlanta GA
Vehicle(s): 2000 G500, 1986 300GD, 2017 Porsche Cayenne Hybrid
Posts: 364
300
Re: Not sure what this is for but I'm sure it's not working

AIGroup - 10/9/2016 8:33 PM

Thanks Dutch - so that's what part # 56 is for.
And with it being disconnected it doesn't adjust the pressure.
I don't haul anything in the truck, but in case I want to put the regulator back in working order - I would order the assembly from MB?
Or has anyone had any success with rebuilding this monster?


As weight is added to the back of your 460, the rear springs compress and the body is closer to the axel, #56 moves the linkage ending at #5 rear brake proportioning valve. As vehicle weight increases more brake pressure is allowed to go to the rear brake drums.

I just reconditioned most of my linkage and replaced #5. I believe there are different rods and springs for different configurations and spring colors. EuroTruck was my parts source.

Matt
#234115 - in reply to #234103
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Author
Posted 10/10/2016 7:58 PM
AIGroup
Regular


Date registered: Sep 2008
Location: Albany, NY
Vehicle(s): 1986 230GE Cabriolet
Posts: 58
50
Re: Not sure what this is for but I'm sure it's not working

thanks
#234117 - in reply to #234115
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