{"id":4271,"date":"2019-03-26T23:37:27","date_gmt":"2019-03-27T02:37:27","guid":{"rendered":"https:\/\/tangopardo.com.ar\/2cf7\/?p=4271"},"modified":"2020-07-05T15:04:32","modified_gmt":"2020-07-05T18:04:32","slug":"grandpas-504-hydraulic-clutch-cylinder","status":"publish","type":"post","link":"https:\/\/tangopardo.com.ar\/2cf7\/2019\/03\/26\/grandpas-504-hydraulic-clutch-cylinder","title":{"rendered":"Grandpa’s 504: hydraulic clutch cylinder"},"content":{"rendered":"\n

Surprisingly the master cylinder for the clutch was in very good condition, not scraped nor corroded and the seals looked fine. The piston came out with a light tap.<\/p>\n\n\n\n

However in the slave things were quite different. Using lots of penetrating oil and a vise as a makeshift press I was able to move the piston but it refused to come out completely on its own.<\/p>\n\n\n\n

So I decided to pump it out using old engine oil and the working master cylinder. I clamped it to the drill press and slowly filled it with 15W40.<\/p>\n\n\n\n

Getting rid of all the air bubbles took a longer time than I expected.<\/p>\n\n\n\n

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Peugeot 504 hydraulic clutch: pumping master cylinder with engine oil<\/figcaption><\/figure>\n\n\n\n

Finally, the slave piston was released. The seal was ok-ish but both the piston and the inner walls had pitting and scratches.<\/p>\n\n\n\n