dodgedart1968
Well-Known Member
This is the brake switch for my '68 Dart manual brakes. There are six brake line ports on the switch, five for brake lines and one for a blank plug. Does it matter where the respective brake lines are connected?
Hydraulic Brake Switch Connections
- Thread starter dodgedart1968
- Start date
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Yes.
Basically fronts on one end rears on the other, the plug IIRC would only fit properly in one hole on the end
Basically fronts on one end rears on the other, the plug IIRC would only fit properly in one hole on the end
dodgedart1968
Well-Known Member
Yes, of course. It's a split system, so it has to be separated.
Cuda Al
Well-Known Member
From my 67 Barracuda (factory lines)
Missing (open port) rears.
Top-Top Master Front
Top Sides Right-Left fronts
Bottom side Rear Master.
Alan
Missing (open port) rears.
Top-Top Master Front
Top Sides Right-Left fronts
Bottom side Rear Master.
Alan
Cuda Al
Well-Known Member
Looking at that picture as shown, the switch is in the middle, rears to the left, fronts to the right. Keep fronts on one side of the switch and rears on the other side. Other than that it doesn't matter what ports you use for what.
Alan
Alan
dodgedart1968
Well-Known Member
Are the master cylinder ports front/rear specific?
Cuda Al
Well-Known Member
I don't think so, see no reason for that. The switch is designed to detect a difference in pressure between the front and rear.
Alan
I would plumb it the way the factory did myMopar.com has factory service manuals free download.
Some master cylinders are designed to apply the front brakes before applying the rear brakes, and some master cylinders use pressure from the rear most cyl to build pressure that apply the front most cylinder
The plug on the prop valve is the retainer for the piston assembly. Basically if you loose brake pressure on the rear the piston will slide back shutting flow off to the rear....and vice versa. The piston will ground out that terminal when this happens and cause your brake light on the dash to light.
The line connections are mostly idiot proof, having different size fittings. On the master cylinder the larger reservoir is front brakes. Manual brakes have the same size on both reservoirs.
The line connections are mostly idiot proof, having different size fittings. On the master cylinder the larger reservoir is front brakes. Manual brakes have the same size on both reservoirs.
Close.
In a disc / drum setup the larger resivour will be the disc regardless of manual or power.
In a drum / drum the resivours will be the same size regardless of manual or power
dodgedart1968
Well-Known Member
I studied the FSM before posting. I did not find any diagrams of the hydraulic system.
dodgedart1968
Well-Known Member
My car is drum/drum.
dodgedart1968
Well-Known Member
Perfect! Thx.
Also sometimes there are photos one section unrelated to what you are working on that gives you a hint as to what goes where
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