mbavers
Senior Member
1994 580 Super K. Master cylinder loses fluid intermittently. I've added about 1/2 gallon this year. I think the fluid level in the transaxle is high. No visible fluid leaks, so I guess leak is internal and I have to drop transaxle. Only the correct hydraulic fluid has been used-no brake fluid. My question is what is usually the problem? I'm thinking the rubber O-rings in the pistons, but my mechanic is doubtful (I haven't brought him the machine yet, just the service manual). If anyone here has had this problem please tell me what the solution was. Bad O-rings? Pitting in the piston or housing? Just want to get an idea if it's fixable or should I take it out behind the barn and shoot it?