GM 94844097 Body,Automatic Transmission Fluid Pump

Disconnect the battery ground cable and remove the distributor cap for safety. Remove the fan shroud retaining bolts. For big-block VB engines, place a piece of heavy cardboard between the radiator and fan to prevent contact when raising the engine. Disconnect the exhaust pipes or crossover pipes and drain the engine oil. If an automatic transmission is fitted, remove the converter housing under the pan and splash shield. On pre-1975 models, disconnect the steering idler lever at the frame and swing the linkage down clear of the oil pan. Rotate the crankshaft until the timing mark on the torsional damper is at the 6 o'clock position. For all vehicles except the 350 cu in. and big-block VB with automatic transmission, disconnect the starter brace at the starter, remove the inboard starter bolt, loosen the outboard one, and swing the starter outboard. Remove both front engine mount through-bolts. Using suitable jacks and wooden blocks positioned beneath the torsional damper, raise the engine until 3-inch wooden spacers can be inserted at the engine mounts, then lower the engine onto the spacers. Remove the oil pan retaining bolts and the oil pan, tapping it sharply with a soft-faced mallet or cutting around the joint with a thin sharp knife if it is stuck, taking care not to pry against the crankcase to avoid irreparable distortion. Where applicable, remove the oil pan baffle and then remove the oil pump and screen assembly along with the extension shaft.

Install the pressure regulator valve and related parts, followed by the drive gear and shaft in the pump body, then the idler gear with the smooth side facing the pump cover opening.