NAK auto rubber oil seals for BMW

NAK auto rubber oil seals for BMW.Reinstall the inspection cover, the starter, the transmission to motor struts and the exhaust y-pipes, if removed. Reinstall the oil dipstick, fill with oil and check for immediate leaks. Start motor and be sure oil pressure comes up and that there are no leaks.
The original rear main seal on the engines of these now old Thunderbirds were originally made of a rope-like material. After forty plus years many of those seals are leaking whether from wear and tear or from drying out. this article describes a method for replacing the seal without removing the crankshaft and can be done without removing the engine from the car. This procedure will work on all FE series Ford big block engines. Many other engines also can be repaired in a similar manner.NAK auto rubber oil seals for BMW
First chock the wheels of the car. Then drain the oil from the engine. Next unbolt the two side engine mounts. Raise the engine using a jack. Do not use the oil pan to rise the engine. You will bend the sheet metal. You can also raise the engine using an engine crane with a carburetor mount adapter. Use bocks of wood at the engine mont points to keep the engine raised as shown below.
It takes a lot of patience and careful work to get the job done. Still, it is easier than removing the engine and crank.
Remove the bolts holding the oil pan and remove the pan. Unbolt the rear main bearing.NAK auto rubber oil seals for BMW
The picture below shows the lower rear main bearing and the seal that is the seal that was failing and causing the oil leak. It had become unraveled when the end of it was snagged while scraping the bottom of the block to clean off remnants of the old oil pan gasket in a previous procedure to replace the oil pickup screen.
 Below is a picture of the rear main bering cap reinstalled with new seals. There is a little dab of clear silicone covering the ends of both side seals. When you tap in those steel pins, it pushes the rubber in about 1/16 of an inch (if that much). The instructions say to fill that little depression with silicone.NAK auto rubber oil seals for BMW
Casey Tarp, who did this repair, says this was one of the more difficult repair jobs he has attempted. (He didn't replace the upper half seal above the crank as it looked brand new.) He did the job with the car on ramps. Between the limited working room and the oil dripping down onto your face, it makes for a very unpleasant afternoon. A vehicle lift would make this procedure easier.NAK auto rubber oil seals for BMW
Especially hard was driving those steel pins in. There is barely enough room for a hammer head because of the crank shaft components, power steering cylinder, and other linkages. There's just no room to do anything. Just small very precise taps are allowed to drive those pins in.NAK auto rubber oil seals for BMW