Question:

I purchased one of these a while back. Works great however I’m not sure I got the spacing right. I noticed some slight scuffing inside the cylinder when I changed the seal. What is the correct length of the spacers – or at least the difference in length of the 3 spacers?

Answer:

There is no correct length a such for a spacer. The hydraulic slave cylinder set up is dependant on each installation. The way we normally set up our hydraulic clutch mechanisms is to assemble the clutch with no drive plate in, so in theory the fingers are as far back as they will go towards the gearbox as in a fully worn out state. We then fit a long spacer onto the hydraulic clutch mechanism, ensure that the release bearing is pushed back on the slave cylinder as far as it can go and then press the gearbox and bell housing against the back of the engine and measure the gap between the bell housing and the block. For example, if you had a 10mm gap, the spacer needs to be shortened by 10mm.

If the bell housing goes all the way against the engine, then you need to look through the release mechanism hole or inspection access of some kind and check the distance between the release bearing and the clutch fingers. If there is a gap when the release bearing is fully pressed as far back as it will go, remove the bell housing, pull the bearing and the slave cylinder forwards by slightly more than the gap you would appear to see through the inspection hole. Then reassemble again, this time the release bearing will be pushed back by the fingers as you assemble the gearbox onto the back of the engine until it stops. You can then remove the gearbox again and check the amount that the release bearing is proud of its stop. Then you will need to add this distance to the length of your existing spacer. This is not the overall length you need for your spacer.

Category: Gearbox & Clutch