Power steering fluid in brake system

TommyJ1980 · Jan 31, 2023

And just out of curiosity, why do the hoses need to be replaced if all the fluid does is flow through them? Concerns for deterioration?

0xDEADBEEF · Jan 31, 2023

Supercharged111 said:
How is trans fluid so hard on rubber brake components? Both are hydraulic fluids. I'm shocked a simple purge isn't enough to make OP whole again.

Different chemistry. Brake fluid isn't petroleum based. Doesn't automatically mean the rubber is shot though.

Supercharged111 · Jan 31, 2023

TommyJ1980 said:
This whole thing is getting a bit ridiculous at the moment. I’m going to leave the ABS module alone, replace the master cylinder and calipers and flush new fluid through the system to all four wheels, and attempt to put it back together and drive it 1/2 mile to its front end alignment at 2pm, which couldn’t be done yesterday because of frame plugs that have to be cut out. Hopefully it makes it to that and back home, then I can deal with the rear wheel cylinders and valves, and take a look at this custom procedure I’m reading about to bypass the ABS pump, which looks to be a pain in everybody’s a**. Thanks for all the input, wish my luck, I won’t be doing over 25mph till I get this whole thing troubleshot.

The delete procedure is get front line sections and a prop valve from a TBI truck (or make your own) and buy an adapter to screw the rear line into the prop valve. D-U-N done.

Caman96 · Jan 31, 2023

0xDEADBEEF said:
Doesn't automatically mean the rubber is shot though.

I’m certainly no expert so yes it’s possible, but OP says his brakes have already locked up.

You must be registered for see images attach

Bottles and fluid do look similar though.

0xDEADBEEF · Jan 31, 2023

It's wise to take the "better safe than sorry" approach here.

TommyJ1980 · Jan 31, 2023

Supercharged111 said:
The delete procedure is get front line sections and a prop valve from a TBI truck (or make your own) and buy an adapter to screw the rear line into the prop valve. D-U-N done.

Really appreciate it, thx

Supercharged111 said:
The delete procedure is get front line sections and a prop valve from a TBI truck (or make your own) and buy an adapter to screw the rear line into the prop valve. D-U-N done.

TommyJ1980 · Jan 31, 2023

Would it be correct in simpletons terms, to say that the ABS system is “downstream” of the master cylinder, and that clean fluid flowing downhill from a bench-primed master cylinder flows down through the abs system and out to the lines?

RichLo · Jan 31, 2023

Unhook the rubber hoses, calipers, wheel cylinders and install the new bench purged master, purge all of the steel lines thoroughly, install NEW rubber hoses, calipers and wheel cylinders. Dont re-use anything besides the steel lines. You need to make sure the steel lines are completely clear before installing new stuff and bleeding.

Jnunez74 · Jan 31, 2023

Maybe consider ditching ABS for proportioning valve. It is definitely cheaper to go this way and much easier when it comes to installation procedures

HotWheelsBurban · Jan 31, 2023

Caman96 said:
I’m certainly no expert so yes it’s possible, but OP says his brakes have already locked up.
You must be registered for see images attach

Bottles and fluid do look similar though.

Yeah the trans fluid and power steering fluid bottles I have are almost identical looking. So I took a sharpie marker and put a T on the dexron and a PS on the other one, to be able to tell them apart w/o taking them out of my truck box.

Power steering fluid in brake system

TommyJ1980

I'm Awesome

0xDEADBEEF

Supporting Member

Supercharged111

Truly Awesome

Caman96

OEM Baby!

0xDEADBEEF

Supporting Member

TommyJ1980

I'm Awesome

TommyJ1980

I'm Awesome

RichLo

E I E I O

Jnunez74

OBS Enthusiast

HotWheelsBurban

Gotta have 4 doors..... Rawhide, TOTY 2023!

Similar threads

Latest posts

Members online

Forum statistics

Share this page