GM 12337249 Cover Kit,Engine Front W/Gaskets(Asbestos)

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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.

Follow the procedures under the heading 'Small V8' by draining the radiator, disconnecting the upper and lower radiator hoses along with the heater return hose at the water pump, and removing the fan, fan pulleys, and belts. Disconnect the fuel lines, plug them, and remove the fuel pump, then take out the alternator and brackets. Remove the distributor, marking the position of the rotor if the timing chain and sprockets are not disturbed. Loosen the front clamp on the thermostat by-pass hose and slide it rearward, then remove the harmonic balancer bolt and washer, followed by the harmonic balancer. Take out the bolts attaching the timing cover to the cylinder block and the two bolts connecting the oil pan to the timing cover, then remove the timing cover. Clean the timing cover thoroughly, ensuring all old gasket material is removed and the surface is undamaged. Before re-installing, remove the oil pump cover and pack petroleum jelly around the oil pump gears to prevent air space, then re-install the pump cover with a new gasket and torque the bolts to specifications. Ensure the gasket surfaces of the block and timing cover are smooth and clean, then install a new gasket on the cover. Lubricate the harmonic balancer shaft where it will go through the timing cover seal to prevent damage upon engine start. Engage the dowel pins on the block with the dowel holes in the cover and position the cover against the block. Apply sealer to the bolt threads and tighten the bolts to specifications, then install the harmonic balancer, bolt, and washer, using a screwdriver or similar tool to lock the flex plate or flywheel starter teeth before torque-tightening the harmonic balancer bolt to specifications.

For Pontiac engines (265 and 301), steps include draining the cooling system, disconnecting hoses, vacuum lines, and spark plug wires, and removing various components such as the radiator, accelerator linkage, temperature gauge wire, fuel lines, hood latch brace, PCV valve hose, rocker covers, distributor, intake manifold, and valve cover. Additionally, rocker arm nuts should be loosened, pushrods and lifters removed, harmonic balancer, fuel pump, oil pan-to-timing cover bolts, and timing cover and gasket removed.

Use the dowel pins on the block to engage the dowel holes in the cover and position it against the block.

Use a sharp knife to remove any oil pan gasket material at the oil pan to engine block junction.

Tighten all bolts to the proper torque specifications and reinstall all components in reverse order, applying lubricant to the front hub seal before installing the crankshaft hub.

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