Tips For Removing Stuck Master Cylinder Cap On A Dexter T4750820 Actuator

Question:

What’s the trick to getting the master cylinder cap off? I have this coupler on my trailer and the plastic hex just flexes when trying to unscrew counterclockwise using a tight fitting 1-1/16” wrench. Any additional force and the plastic cap will certainly break. Thanks

asked by: RG

Expert Reply:

Sometimes dust and dirt can get down in the threads of the master cylinder cap and they can get stuck on there real good. Unfortunately there is not really a trick to getting it off, other than using force. A little WD40 may help but I would use that as sparingly as possible. If you have no choice but to break the cap, it can be replaced with part # T4830601.

expert reply by: Jesse M