| HOW TO: Repair defective ZF6 clutch slave cylinders. |
Subject: HOW TO: Repair defective ZF6 clutch slave cylinders. by CentralCoaster on 2008/1/14 3:15:39 Most/all of the ZF6 clutch slave cylinders produced over the past 5 years or so are defective from the factory. The seals are installed backwards which results in incomplete clutch disengagement, and leaks. The photos below, starting top-left, show how it's repaired. Bottom-right is the seal installed correctly and waiting for reassembly. You can potentially damage the seal during this repair. If it makes you uneasy, send it to ZFdoc.com, he'll do it for you for a nominal fee. The snap ring groove may tear it as you're pulling it out. It may be possible to deburr it first, although I didn't try. The piston is very difficult to remove from the slave. I tapped it against a block of wood to get it most of the way out, then pulled it the rest of the way using some snap ring pliers to grip the cup of the piston. DO NOT put any tools on the ID surface of the aluminum cylinder. This is a finely machined hydraulic surface and you don't want to scratch it. |
