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7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

       
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Old 03-15-2006, 01:38 AM   #1 (permalink)
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Strange brakes

My brakes have been strange of late. The pedal does not rise very quickly at all. I fact it rises so slowly that my brakes remain on for a bit longer than I'd like some times. *** is wrong now?
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Eric -> '92, F250, 7.3l IDI, extracab, longbox, one ton spring in the rear,Borg Warner 1356 transfer case, 12500lb winch. 280k km. Since purchased in June 2003 repairs include: ball joints, tie rod ends, all u joints, water pump, radiator, brake calipers, brake pads & shoes, rear drums, front wheel bearings & seals, rear axel seals, replaced transfer case, rebuilt rear differential, replaced bent drive shaft, replaced drive shaft support bearing, K&N air filter, dual 2.5" exhaust.
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Old 03-15-2006, 02:13 AM   #2 (permalink)
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Re: Strange brakes

My best guess...a sticking valve in the master cylinder [img]/ubbthreads/images/graemlins/shrug.gif[/img]. OkieG
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Old 03-15-2006, 02:20 AM   #3 (permalink)
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Re: Strange brakes

Hmm... well lets look at all the components. Booster, master cylinder, flexible brake lines to calipers, calipers. Which one it is, I'm not sure. They're all a pain to switch out. Maybe someone will come with an idea on how to diagnose.

I wonder if air in the system or water could cause this.
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Ford 1992 E-350, 6,900 lbs.
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Old 03-15-2006, 06:37 PM   #4 (permalink)
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Re: Strange brakes

or--vacuum pump headed out??? otherwise master cyl headed out-----
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Old 03-15-2006, 09:26 PM   #5 (permalink)
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Re: Strange brakes

not that much of a pain...
switched out the brake booster on my truck today.
took under 30minutes.

now the only problem is I keep stopping too fast (need to get used to the brakes working properly).
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Old 03-15-2006, 11:55 PM   #6 (permalink)
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Re: Strange brakes

[ QUOTE ]
not that much of a pain...
switched out the brake booster on my truck today.
took under 30minutes.

now the only problem is I keep stopping too fast (need to get used to the brakes working properly).

[/ QUOTE ]

Why did you change your booster out? Was the petal hard to push?
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Old 03-16-2006, 07:29 AM   #7 (permalink)
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Re: Strange brakes

leaking like a son of a gun
vaccum was staying at 5in with booster attached. plugged the vacuum was 22in.
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