by "JawzX2, Boost Addict. 1.6t, 2.7tt, 4.2t" (jawzx2)
Published 05/25/2017 at 18:20
by "JawzX2, Boost Addict. 1.6t, 2.7tt, 4.2t" (jawzx2)
Published 05/25/2017 at 18:20
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the brakes and clutch in the Zetor. I am having no luck. I’ve been sucking on the clutch slave bleeder with my vacuum bleeder for the better part of an hour and have yet to get any fluid to suck through through from the reservoir. when I pump the clutch peddle the fluid in the res swirls around and changes level, but I’m still only getting air out of the slave bleeder... The only thing I can think is that the pressure equalizer between the clutch and brake circuit is preventing fluid flow into the lower clutch circuit... But I thought for sure the vacuum bleeder would suck it through. ARGH, maybe its like a Mercedes with mechanical ABS and needs to be bled from closest to farthest circuit, instead of farthest first?? Blah. The repair manual just says “bleed the circuit in the usual manner”... Any advice?
Update: So, I successfully bled both brake circuits with the one-man vacuum-bleeder method. pedals feel good, pumped through all the gunky old fluid until fresh, clean came out, if there’s air in it, it’s not much. I mean it’s a tractor, I’m not super worried about a few small bubbles anyway...
now, the clutch.... the fucking clutch... I tried regular bleeding (the slave cylinder and clutch pedal are both reachable by standing on the left side of the tractor just in front of the operator station), vacuum bleeding, gravity bleeding, and when those all failed to get results I went out, bought a 60ml syringe at the local farm supply, and pumped 120ml of fresh DOT3 backwards through the circuit via the slave bleeder nut. The result? A fucking floppy clutch pedal and no movement from the slave. WTF? Clutch was working fine before the leaky brake masters caused most of the fluid to leak out of the system, even then, I could pump it and get it to work enough to drive it back to the shed and park until the new brake master cylinders arrived... now the brakes work (and don’t leak) and the clutch acts like it’s hosed. :P
What do you think the chances are I can get it to work without replacing the clutch master cylinder now? And if so, how the fuck do I get it work again?
ideas?
"crowmolly" (crowmolly)
05/25/2017 at 13:14, STARS: 1
You sure you aren’t pulling air past the bleeder threads?
"Die-Trying" (die-trying)
05/25/2017 at 13:36, STARS: 1
are you doing the job solo? i usually use the 2 guy pressure method. i have had some clutch set ups take a WHILE to finally get fluid out of them. if you dont have someone pumping on them, try and find someone to help. make sure you are letting the pedal all the way up between pumps. sometimes you have to about stand on pedals when they dont want to get to the floor.make sure the resivoir stays mostly full, put the cap back on fairly tight while building pressure....... just some dumb stuff that sometimes helps.....
"JawzX2, Boost Addict. 1.6t, 2.7tt, 4.2t" (jawzx2)
05/25/2017 at 13:44, STARS: 0
it’s possible, i can pull 20in of vacuum on it though, that i would thing should pull something through from the res though....
"JawzX2, Boost Addict. 1.6t, 2.7tt, 4.2t" (jawzx2)
05/25/2017 at 13:48, STARS: 1
yeah, solo. I can reach the clutch pedal and slave from the left side of the tractor though, so I’ve pumping the pedal with one hand and the vacuum with the other...
bled the brake circuits no trouble at all. On the theory that the pressure equalizer might have something to do with it I’m trying the clutch again, now that the brakes are bled...
"crowmolly" (crowmolly)
05/25/2017 at 13:56, STARS: 0
Does it hold vacuum when you stop pumping?
"JawzX2, Boost Addict. 1.6t, 2.7tt, 4.2t" (jawzx2)
05/25/2017 at 14:28, STARS: 0
it leaks down, but not super fast. I just can’t believe that I’m not pulling any fluid through! The brakes bled fine, BTW, new master cylinders and all. The damn clutch worked fine until i got all the air in the system from replacing the brake masters.... :P
"crowmolly" (crowmolly)
05/25/2017 at 14:32, STARS: 0
Yeah, you’re probably right. Does it gravity bleed at all (if you open the bleeder and master up?)
"JawzX2, Boost Addict. 1.6t, 2.7tt, 4.2t" (jawzx2)
05/25/2017 at 14:44, STARS: 0
It doesn’t seem to want to gravity bleed... I think I’m gonna go out, buy a big syringe, and see if I can reverse bleed it through the slave.
"crowmolly" (crowmolly)
05/25/2017 at 15:00, STARS: 0
Can you thread in a speed bleeder?