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69 Ranchero Brake Differential Pressure Switch |
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jimh1956 
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Joined: 05-October-2025 Location: san antonio Status: Offline Points: 7 |
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 Topic: 69 Ranchero Brake Differential Pressure SwitchPosted: 17-March-2026 at 4:00AM |
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The piston in the brake differential pressure switch was stuck at the rear brake end, air pressure would not free it. I made a plug for one port from a brake line, 1/4 tubing and 7/16-24 thread and a grease fitting adapter for the opposite port, same thread. Applying grease gun pressure, the piston came out readily. Bronco Graveyard supplied the new seal kit.
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72 RS 351
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Joined: 04-September-2014 Location: Knoxville TN Status: Offline Points: 3443 |
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Posted: 17-March-2026 at 5:19AM |
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Nice, and what, bread wouldn't do it like a throw out bearing? Good work.
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Don
73 Ranchero "Sport 72 front end", floor shift/console, planning EFI 7000 rpm 351 stroker 73 Ranchero GT 351C-4V &4R70W for sale later. 92 Lincoln Mark VII SE GTC, OBDII 347/4R70W |
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jimh1956
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Joined: 05-October-2025 Location: san antonio Status: Offline Points: 7 |
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Posted: 17-March-2026 at 8:58AM |
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Source was Dennis Carpenter not Bronco Graveyard. Thanks.jh
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