1983 E350 brake booster
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4th Gear
Joined: Oct 2024
Posts: 4
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1983 E350 brake booster
Hello. I am unable to find a brake booster for this box van. The Master Cylinder is leaking and the BB is so rusty i am afraid to touch it without replacing it. Wondering if anyone had one laying around somewhere. I read on another thread that the one for the trucks will work if i swap out the push rod.
Hotshot
Joined: Jul 2020
Posts: 10,562
Likes: 2,673
From: Near Salt Lake City
Well, the pushrod is molded into the rubber diaphragm, and I've never been able to get one out short of taking the booster apart and destroying the rubber.diaphragm.
Just because it is full of brake fluid does not ruin one immediately
They run for years and years like that, even after it gets half full and starts leaking inside the vehicle, they generally still work
So,
I'd steam clean it, or just a pressure washer, then remove it and dump it out, replace the leaking master cylinder
Just because it is full of brake fluid does not ruin one immediately
They run for years and years like that, even after it gets half full and starts leaking inside the vehicle, they generally still work
So,
I'd steam clean it, or just a pressure washer, then remove it and dump it out, replace the leaking master cylinder
Hotshot
Joined: Jul 2020
Posts: 10,562
Likes: 2,673
From: Near Salt Lake City
The pushrod is molded into the rubber diaphragm inside the brake booster
I've never been able to get one out short of disassembling the booster and destroying the rubber diaphragm
** They run for years with brake fluid in them with no trouble
Even long after they get half full and start leaking inside the vehicle, they still work
So,
I'd steam clean it, or just use a pressure washer clean it all off (so you can touch it without wearing it)
Then I'd dump the brake fluid out, replace the master cylinder and the one way valve and start over
Fun stuff
I've never been able to get one out short of disassembling the booster and destroying the rubber diaphragm
** They run for years with brake fluid in them with no trouble
Even long after they get half full and start leaking inside the vehicle, they still work
So,
I'd steam clean it, or just use a pressure washer clean it all off (so you can touch it without wearing it)
Then I'd dump the brake fluid out, replace the master cylinder and the one way valve and start over
Fun stuff
Hotshot
Joined: Jul 2020
Posts: 10,562
Likes: 2,673
From: Near Salt Lake City
Note:
Looks like
1952-1972 those rods did screw out or the booster (means you could modify a rod)
You could look at Ebay item # 406683358914
That is an old truck one with some attaching parts that might work for you or get with a hotrod place like Speedway and get a universal replacement
Looks like
1952-1972 those rods did screw out or the booster (means you could modify a rod)
You could look at Ebay item # 406683358914
That is an old truck one with some attaching parts that might work for you or get with a hotrod place like Speedway and get a universal replacement
Laughing Gas
Joined: May 2021
Posts: 1,177
Likes: 362
From: Anderson, California
Depending _ _ _ on what you can spend to get your system working again, I'd contact Power Brake Sales in Sacramento, California.
Many booster and master cylinder components do interchange, and those guys are the experts for many decades.
I sent them a Tredle-Vac power brake booster and MC for my '56 Chevy Nomad Wagon decades ago. It was returned to me looking brand mew, and I never had any issues with it for 22-years. _ _ they are NOT CHEAP, but Thorough, and worth the $$$.
You can find them with a MapQuest search. _ I just spoke with them last year concerning a MC for my '77 jeep CJ-7.
Note, I chose to order a new re-pop MC from Napa, and had to drill the bleed-hole to direct the brake fluid out the front-bottom in case of a piston seal failure, which prevents filling the Booster as mentioned above.
The E350 probably has a 1-1/8" bore. _ my guess. And another guess is the OEM MC was probable an ACDelco unit.
Best wishes.
Many booster and master cylinder components do interchange, and those guys are the experts for many decades.
I sent them a Tredle-Vac power brake booster and MC for my '56 Chevy Nomad Wagon decades ago. It was returned to me looking brand mew, and I never had any issues with it for 22-years. _ _ they are NOT CHEAP, but Thorough, and worth the $$$.
You can find them with a MapQuest search. _ I just spoke with them last year concerning a MC for my '77 jeep CJ-7.
Note, I chose to order a new re-pop MC from Napa, and had to drill the bleed-hole to direct the brake fluid out the front-bottom in case of a piston seal failure, which prevents filling the Booster as mentioned above.
The E350 probably has a 1-1/8" bore. _ my guess. And another guess is the OEM MC was probable an ACDelco unit.
Best wishes.
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