low brake pedal problem
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Freshman User
Joined: Feb 2010
Posts: 28
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From: Ottawa Ontario
low brake pedal problem
I have a 1993 F350 none turbo diesel dual wheel rear 7.3L.Never winter driven.Replaced,2 rear wheel cyl`s,shoes,drums,2 front calipers and pads,serviced sliders bleed brakes and adjusted shoes so just to touch drums.You can stop but pedal is low.Any ideas?Vacum pump working good,lots of vacum.+
Cargo Master
Joined: Jan 2004
Posts: 3,118
Likes: 149
From: South Dakota
It can be real tricky to get those rear shoes adjusted just right, tight but not too tight. Could also be some air in the lines yet, but that will usuaully work out driving it, as long as you have some pedal which you do.
Cargo Master
Joined: Jan 2004
Posts: 3,118
Likes: 149
From: South Dakota
Actually what you might try, assuming you have a good place to do it. Go in REVERSE with one foot on the brake pedal and on foot on the gas pedal, back up slowly and keep hitting the brake pedal. The rear brake shoes should self adjust to the proper tightness.
Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 12
From: Sand Lake, MI
Solid plug the brake line ports on the master cylinder test pedal, if solid pedal the problem is down stream of the master cylinder, if pedal is soft line ports plugged the master cylinder is the problem.
If do replace it, be sure and follow the included instructions for proper bench bleeding method to avoid damaging it in the process.
If do replace it, be sure and follow the included instructions for proper bench bleeding method to avoid damaging it in the process.
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Freshman User
Joined: Feb 2010
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From: Ottawa Ontario
Re pedal
Have changed master,think I might pinch off brake flex hoses with plastic line plyers and see if the pedal gets hard,could be flex hoses weak,if no change,repeat at rear flex hose and check pedal.just thought about this!
Last edited by goodybrain2001; Jan 15, 2014 at 06:21 PM. Reason: Spelling
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Fleet Owner
Joined: Oct 2005
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From: Kentucky
If this has been a long standing problem that other owners may have tried to fix it could be as simple as this: Brake Booster Pushrod Adjustment - FSB Forums
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Freshman User
Joined: Feb 2010
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From: Ottawa Ontario
re brake booster adjustment
If this has been a long standing problem that other owners may have tried to fix it could be as simple as this: Brake Booster Pushrod Adjustment - FSB Forums
Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 12
From: Sand Lake, MI
Yup that was good thinking.....was denied leaving rep points as usual......, when troubleshooting and doing so after others before ya gotta check everything. There is no way to know what they might have screwed with!
Fleet Owner
Joined: Oct 2005
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From: Kentucky
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