Hello All,
Wondering if anybody out there has rebuilt/repaired the monovalve on a late E420 and wants to share the experience - local dealer wants $396.00 for a new one and it has to be ordered.
I removed the top (1 connector, 4 Torx 10 long screws and 1 heater hose clamp) and saw the deteriorated rubber seal/diaphragm. Solenoid tested good.
It's getting warm in Richmond. Any help will be greatly appreciated!