How to Install the Rear Crankshaft Seal Properly. • We’re finishing the repair of a Ford 2.2 TDCi diesel engine and taking a detailed look at the process of installing the rear crankshaft oil seal. The seal is made in a metal housing and is secured to the engine block with eight bolts. • To install this type of seal correctly, two alignment tools are required: \t•\tthe first ensures the sealing lip is not damaged during installation, \t•\tthe second ensures perfect alignment between the cranksha