natedogg66 said:
If you get the rebuild kit from NAPA make sure they give you the right one. The piston that was in the kit they gave me didn't fit into the cylinder. Must've been for a 2G or 3000GT or something. Anyway, NAPA screwed it up just like they've screwed up all of my orders with them.
Dealer did the same to me. The Mitsu rebuild kit had a green piston in it that was bigger than the bore in my slave cyl. My slave cyl had a red piston in it.
The bore was fine, no scoring.. and so was the red piston.. so I just took the seal off of the kit's oversize green piston and put it on my red piston. So my slave cyl has about 1mm extra lip on its seal. Works great, possibly even better than stock? lol
There's not much to rebuiding a slave cyl, or the clutch master cyl for that matter. The key points are to make sure the bore of the cylinder isn't scratched or scored at all (if it's scratched, you can't rebuild it... time to buy a new or rebuilt cylinder). On the slave, if you have to reuse your old piston, it needs to be smooth as well. On the master you will replace the entire piston assembly, so just check the bore to make sure it's in good shape. Ideally you would take all of this stuff apart to make sure the cylinders are rebuildable before ordering the rebuild parts.
Other than that.. you just take the cylinders apart (got a shop manual?)... clean everything out VERY thoroughly with brake cleaner, let it dry, then lube up the inside of the cylinder and the outside of the piston with new brake fluid before reinstalling the piston. Put it back together the same way it came apart, using new parts from the rebuild kit. Grease the boot on the master cyl where the pushrod slides in and out.
As for tools, you need circlip pliers to get the retaining clip in/out of the master cylinder. The slave cyl doesn't require anything special at all. It's harder to get the master cyl off of the car than it is to do the actual rebuild IMO. I hate doing all that crap under the dash.
Personally I recommend rebuilding both master and slave at the same time. It's hydraulics.. if one end of the line is screwed up, you can assume the other end of the line is in the same condition. If your slave just failed, your master is gonna be next. Best to knock them both out at the same time.
