PeachParts Mercedes-Benz Forum - View Single Post

retmil46 · #5 07-27-2012, 02:32 AM

I checked out the Motive bleeders on Amazon earlier today. As Emmerich pointed out, there were a few complaints that stood out in the customer reviews -

No way to vent pressure from the container, other than unscrewing the entire cap.

The bushing for the pressure gauge was made out of steel, which rusted and contaminated the brake fluid - same gent mentioned he replaced it with a brass fitting.

The "universal" flat adapter, which uses j-hooks and a chain to hold it onto the reservoir, was made out of plastic - anything over 10 psi and it flexed with the pressure and lost it's seal on the reservoir.

I checked out their home website as well. The separate model-specific adapters cost upwards of half as much as a complete basic kit. Given I've got 4 different makes of vehicles to use this on, that's starting to look not so cheap.

NAPA has a flat plate universal adapter, made out of metal, uses the same j-hook and chain fastening system, that will handle up to a 3 1/4" opening, and the fittings are threaded into the plate with standard 1/8" NPT. Price is $42.

My thinking is this - get the very basic kit. Drill and tap the cap or upper side of the container to accept a vent valve. Replace the steel pressure gauge bushing with a brass one. Lose the plastic universal adapter that comes with the kit, and get one of the NAPA metal universal adapters. Replumb the NAPA adapter to add a shutoff and a vent valve at the reservoir.