Pontiac 7846096 Pump Asm,Vacuum

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The electric vacuum pump is mounted under the battery tray on the left-hand side of the vehicle and the inlet hose is connected to the booster check valve and the booster outlet hose is connected to the intake manifold. To remove, disconnect the negative battery cable, raise and support the vehicle, then remove the splash shield on the left side, disconnect the hoses at the vacuum pump, unplug the electrical connection at the pump, and remove the nuts which secure the pump assembly to the mounting bracket. To install, secure the pump assembly to the mounting bracket, tighten to 6 ft. lbs. (8 Nm), engage the electrical connection to the pump, then the hoses, install the left side splash shield, lower the vehicle, and connect the negative battery cable, reset the radio and clock. For the mechanical type, disconnect the negative battery cable, loosen the air pump drive belt, remove the three vacuum pump attaching bolts, remove the pump from the engine, unfasten the pulley attaching bolts, and remove the hub from the pump shaft by threading a 3/s x ½ in. (10 x 13mm) bolt into the end if the shaft, then using a puller remove the hub. To install, install the hub on the new pump by using tool J-25033 or equivalent installer, install the hub and shaft so that the end if the shaft extends 0.15-0.17 in. (3.93-4.43mm) beyond the hub/pulley mating surfaces, attach the pump to the mounting bracket and tighten to 21 ft. lbs. (28 Nm), install the belt, then check the tension of the belt and the pulley alignment.