I was wondering if the rear hydraulic suspension on a w123 model was the same in principle to a w116 model. I have a problem getting the rear shocks to pump up after I replaced one of them. I have bled the system from front to back both sides and no luck. I just made an adapter for a pressure gauge to fit onto the pump it self and blew it up, "over 700kpa" then the gauge failed. Can anybody help , Cheers Damien. PH. 0414402504.