Ford F 750 brakes

MDSKY

Jr. Member
Joined
Feb 8, 2007
Messages
38
Likes
0
Points
6
#1
I am working on a 05 F 750 single axle dump truck with hydo boost disc brakes and ABS. I replaced the master cylinder . I bench bled the master cylinder and bled the system at each caliper. Now I have very little braking on the rear. The front brakes seem to be fine.There aren't any bleeders on the ABS unit. Any ideas?
 

tdark

Hero Member
Joined
Nov 14, 2006
Messages
316
Likes
5
Points
18
#2
How much fluid you getting at the rear when you pump the brakes? good pressure? Did it have good brakes before you replaced the master cylinder?
 

MDSKY

Jr. Member
Joined
Feb 8, 2007
Messages
38
Likes
0
Points
6
#3
Yes there is good flow . The driver's complaint was that the pedal went to the floor at some traffic lights. I may still have air in the ABS unit. Thanks!
 
Joined
Jun 4, 2013
Messages
1
Likes
0
Points
0
#4
I actually had the same problem. I have bled the brakes a number of times, replaced the master, new pads, new rotors....Finally replaced the calipers and problem solved. If it raises again you may have to go for any heavy duty truck repair and service centre like Truckers Assist.
 
Joined
Jun 19, 2013
Messages
6
Likes
0
Points
0
Age
118
Location
Australia
#5
Are you expert of vehicles? In your situation lot of reason can occur but you need to test first the master cylinder pressure and fluid and the callipers and other brake parts.