I have just restored a 7341 Super Turbo, and after replacing the parts for the braking system, the air valve for the trailer, and the brake booster cylinder to make the front brakes work, I found that once the system was bled, I barely have any travel on the left side—it locks the tractor almost immediately. On the right side, the travel is ideal. What could be happening?
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question 7341 Super Turbo Lack of progressiveness in the left brakes, very little pedal travel.
- Thread starter tayon
- Start date
- Joined
- Sep 9, 2012
- Messages
- 1,200
- Location
- Wiedemar, Germany
- First name
- Joachim
- Machinery:
- Zetor 2011, Zetor 5011, Zetor 7340 Economic, and also a Trabant and Wartburg
Just text, no photo perhaps? As the saying goes, "eat with your eyes." 
Have you readjusted the automatic brakes? The adjustment screw is located directly behind the automatic brakes after removing the plastic cap.
number 5
In general, I would always adjust the dry disc brake so that the braking point on the pedal is only reached after about 60% of the pedal travel, which means it's lower or a bit late. Definitely not like in a modern car.
You should also check the brake pedal play. With pneumatic trailer brakes, the play on both brake pedals must be adjusted differently. The pedal whose brake line also controls the trailer brake should be set to 3 mm of play, and the other to 4-5 mm.
And if the automatic brakes are acting up, i.e., the brakes engage abruptly (because the special lubricant was forgotten during installation, for example), you can spray some WD40 or something similar from behind between the two automatic brake pads. This will make the brakes a bit smoother and more responsive. I've done this on my 7340, and it worked very well.
Have you readjusted the automatic brakes? The adjustment screw is located directly behind the automatic brakes after removing the plastic cap.
number 5
In general, I would always adjust the dry disc brake so that the braking point on the pedal is only reached after about 60% of the pedal travel, which means it's lower or a bit late. Definitely not like in a modern car.
You should also check the brake pedal play. With pneumatic trailer brakes, the play on both brake pedals must be adjusted differently. The pedal whose brake line also controls the trailer brake should be set to 3 mm of play, and the other to 4-5 mm.
And if the automatic brakes are acting up, i.e., the brakes engage abruptly (because the special lubricant was forgotten during installation, for example), you can spray some WD40 or something similar from behind between the two automatic brake pads. This will make the brakes a bit smoother and more responsive. I've done this on my 7340, and it worked very well.
Thank you very much for responding. Firstly, I assume that image represents the rear brakes, correct? Because the front ones on the Carraro axle probably don't have any external adjustment.
I believe the adjustment you are referring to corresponds to the rocker arm screw, the one that makes the fine adjustment for the handbrake that brings it closer to the disc? If you need, tomorrow I can take pictures of how I have it configured.
I believe the adjustment you are referring to corresponds to the rocker arm screw, the one that makes the fine adjustment for the handbrake that brings it closer to the disc? If you need, tomorrow I can take pictures of how I have it configured.
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