Hi I have a 75 FJ40 it has front discs and rear drums, I have owned it a few years and the brakes have never worked well, I have done the following steps to troubleshoot.
Adjusted rear brake drums, several times, initially I thought this was problem, brakes are set with minimal clearance
recently found a leak on front "splitter" on driveshaft, tightened that up and bled brakes, this occurred after sitting all winter, fluid drained out
Bled Brakes
Pulled off vacuum, line, booster helps or assists so figure it works.
The front discs, have torn rubber on calipers, but don't appear to be leaking, rear drum brakes are pretty new, will ensure I still have pressure in system and look for leaks when I get home tonight.
Symptom is brakes work, but hard to press, I can manage if I pay attention, but get nervous when I let others drive as they might not be used to pressing this hard. I also have a 77 FJ40, that has never given me any issues with brakes, I am starting to think it might be master cyclinder and proportioning valve, but don't understand that set up. My 77 is stock, works great, 75, I thought had wrong master cylinder, but appears to be made by aisin for fj40s, could use some help if master cylinders and proportioning valve are worth investigating as a problem, attached are pictures, red one is 77 and green is 75, the problem one.
Adjusted rear brake drums, several times, initially I thought this was problem, brakes are set with minimal clearance
recently found a leak on front "splitter" on driveshaft, tightened that up and bled brakes, this occurred after sitting all winter, fluid drained out
Bled Brakes
Pulled off vacuum, line, booster helps or assists so figure it works.
The front discs, have torn rubber on calipers, but don't appear to be leaking, rear drum brakes are pretty new, will ensure I still have pressure in system and look for leaks when I get home tonight.
Symptom is brakes work, but hard to press, I can manage if I pay attention, but get nervous when I let others drive as they might not be used to pressing this hard. I also have a 77 FJ40, that has never given me any issues with brakes, I am starting to think it might be master cyclinder and proportioning valve, but don't understand that set up. My 77 is stock, works great, 75, I thought had wrong master cylinder, but appears to be made by aisin for fj40s, could use some help if master cylinders and proportioning valve are worth investigating as a problem, attached are pictures, red one is 77 and green is 75, the problem one.