Repair main seal???

[zogg]

I have replacd the valve cover gaskets and checked the oil sending unit,,,all is well, EXCEPT the rear main seal leaks bad. Can this be changed with the motor in the truck???

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[crazzywolfie]

When necessary to replace rear main bearing oil seal on V8-318 models, removal of engine from vehicle or removal of crankshaft from engine block is not necessary. Remove engine oil pan as described under ``Oil Pan, Replace,'' then the rear main bearing cap. Using oil seal replacement tool No. KD-492 or equivalent, remove defective upper seal, then, using same tool, install new seal. After installation, trim upper seal to eliminate frayed ends. Install rear main bearing cap