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Brake problems

Discussion in 'Ford Trucks' started by Bossman 92, Nov 26, 2008.

  1. Bossman 92

    Bossman 92 PlowSite.com Addict
    Messages: 1,771

    I now have no brakes on my 00 F350 Yesterday morning I got in to hook up the plow and the peddle sank to the floor. I drove it some and checked the fluid level and it hasn't moved. I can't find any leaks either......

    Does that sound like the master cylinder or the brake booster??

    Thanks Bossman
  2. Silverstreak

    Silverstreak Senior Member
    Messages: 168

    either a broken brake line, but the fluid level would move or

    check power steering fluid, the trucks have hydroboost and use hydraulic pressure from the PS pump to power the brakes

    the lines run from the PS pump up to the master cylinder area, and often rub on the driver side shock tower/mount and will leak or burst over time
  3. brad96z28

    brad96z28 PlowSite.com Addict
    Messages: 1,525

    Sounds like the master is bypassing. If Hydro boost was not working the pedal should be like steping on a brick!
  4. redplowman

    redplowman Member
    Messages: 61

    I'd bet on the Master Cylinder ...
  5. Bossman 92

    Bossman 92 PlowSite.com Addict
    Messages: 1,771

    Thanks guys... it was the master, and I didn't know they were that easy to change out.

  6. brad96z28

    brad96z28 PlowSite.com Addict
    Messages: 1,525

    I bench bleed the master first and most times I dont even need to bleed the car.
    Ur welcome.:salute:
  7. adksnowo

    adksnowo Senior Member
    Messages: 370

    Our '02 S.R.W. F-350 runs vacuum assisted brakes. Chevys run hydroboost.
  8. Ggg6

    Ggg6 Senior Member
    from IL
    Messages: 521

    I have no idea on the gas engine trucks as I don't work on gas engines, but all the SD F series Ford diesels have hydroboost. All of the big three are running hydroboost on diesels now. The Ford OBS trucks (92-97) diesels had vacuum assist, same with 1st generation Dodge/Cummins.
    Last edited: Dec 6, 2008