Oldsmobile 12523974 Cover Asm,Crankcase Front End & Ptr

In case the engine has been removed from the vehicle skip the following steps as they do not apply. Firstly, the torsional damper must be unbolted, then follows the water pump. Next, undo the crankcase front cover attaching bolts and pull of the front cover from the engine. Big-block Mark IV engines only, first you take out the attaching bolts and then angle the cover away from the engine while cutting the oil pan gasket to the same length as the block before you can remove the cover. During installation of this piece, one should make sure that the block and crankcase front cover are not contaminated. Cut off any oil pan gasket material with a sharp knife at the interface between the oil pan and the engine block. A thin layer of silicone rubber sealer 1/8 inch thick has to be applied to the joint created by the oil pan and block and to the front part of the oil pan. Apply non-setting sealant on the cover gasket and fit it to the cover and then merely tighten four screws at the top and two ¼ inch-20 x ½ inch screws at the bottom cover holes. Place a light bead of silicone sealer to the bottom of the cover, place the cover on the car and with dowel pins aligned, tighten the screws in a star pattern. Unscrew the two 1/4-inch-20 x 1/2-inch screw and screw the remaining cover screws, then unscrew the rest of the components in the same way as the above procedure. For Mark IV V8, first, clean the block and crankcase front cover, second, if necessary trim the tabs off the new oil pan front seal and, third, install the seal to the front cover, thrusting the tips into the holes. Paint the gasket with non-setting sealer and install it on the cover, and apply a 1/2 inch line of silicone Rubber sealer on the join formed at oil pan and block. Bolt the cover attaching screws into position and torque tighten them to the recommend torque. Apply engine oil on the front cover seal area of the torsional damper, position the damper in place and tighten with a suitable bolt and spacers not to damage the damper during this stage. Lastly, the rest are the accessory drive pulley, and the other parts to be placed in the reverse order.

Pry the old oil seal out of the bore and discard it.

Disconnect the upper and lower radiator hoses along with the heater return hose at the water pump.

Disconnect the fuel lines, plug them, and remove the fuel pump.

Apply a bead of silicone sealer on the bottom of the cover, install it, and tighten the screws alternately and evenly while aligning the dowel pins.

Clean all dirt and old gasket material from the sealing surfaces of the timing gear cover, engine block, and oil pan using a scraper and degreaser.

Position the front cover on the engine block and install the mounting bolts, tightening them to the specified torque.

Remove the crankcase front cover mounting bolts and separate the cover from the engine by carefully prying it off the dowels.