It took me about 45-50mins per cooler line to remove and install them when I did that job, and I had the motor mount removed! I just kept shoving it every which way till it finnnally went in/came out. Don't really know what I did, it just suddenly was in place, and I danced around the garage much happier than I had been...

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)