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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Stuck brake booster

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Old Aug 19, 2023 | 05:59 PM
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Mordecai246
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Stuck brake booster

I’m trying to swap the brake booster on my 86 f150 but can’t get it to budge. I removed the 4 bolts on the back and was wondering if I’m missing any fasteners or if I just need to pet some penetrating oil on it for a couple days.
 
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Old Aug 19, 2023 | 07:05 PM
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4 bolts, vacuum line, and the pedal linkage. That should be it. Get a big screwdriver and hammer, get the screwdriver on the edge of the booster bracket and drive it inbetween the bracket and the firewall to force it off.
 
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Old Aug 19, 2023 | 08:46 PM
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Originally Posted by Franklin2
4 bolts, vacuum line, and the pedal linkage. That should be it. Get a big screwdriver and hammer, get the screwdriver on the edge of the booster bracket and drive it inbetween the bracket and the firewall to force it off.
I have all that disconnected so I’ll try to force it with a screw driver. Thanks for the help.
 
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Old Aug 19, 2023 | 11:14 PM
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Have a helper press on the brake pedal. Loosely install a couple of nuts so the booster doesn't fly off when it comes loose. Tap the booster with a mallet as needed to persuade it away from the firewall.
 
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Old Aug 20, 2023 | 08:50 AM
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I got it off after soaking it over night with some penetrating fluid and prying it off with a screw driver. Thanks for the help.
 
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