Vacuum Pump: Service and Repair

REMOVAL
1. Disconnect battery negative cables.
2. Position drain pan under power steering pump.
3. Disconnect vacuum and steering pump hoses.





4. Disconnect lubricating oil feed line from fitting at underside of vacuum pump (Fig. 24).





5. Remove lower bolt that attaches pump assembly to engine block (Fig. 25).
6. Remove bottom, inboard nut that attaches adapter to steering pump. This nut secures a small bracket to engine block. Nut and bracket must be removed before pump assembly can be removed from block.





7. Remove upper bolt that attaches pump assembly to engine block (Fig. 26).
8. Remove pump assembly from vehicle.

NOTE: The vacuum pump and adapter are serviced as an assembly and must not be separated.





9. Remove the remaining three power steering pump to adapter mounting nuts (Fig. 27).





10. Gently, remove the steering pump from the adapter. Use caution not to damage the oil seal in the adapter body (Fig. 28).

INSTALLATION

NOTE: Make sure the two pump spacers are present before assembling power steering pump to adapter.

1. Aline the steering pump drive dog with the slot in the vacuum pump drive assembly, slide the steering pump into place on the adapter.Use care not to damage the oil seal in the adapter body
2. Install the three steering pump to adapter nuts, do not install the lower inboard mounting nut at this time. Tighten nuts to 24 Nm (18 ft. lbs.).





3. Position new gasket on vacuum pump mounting flange (Fig. 29). Use Mopar Perfect Seal, or silicone adhesive/sealer to hold gasket in place.
4. Insert pump assembly upper attaching bolt in mounting flange and gasket. Use sealer or grease to hold bolt in place if necessary.





5. Position pump assembly on engine and install upper bolt (Fig. 30). Tighten upper bolt only enough to hold assembly in place at this time.
6. Working from under vehicle, install pump assembly lower attaching bolt. Then tighten upper and lower bolt to 77 Nm (57 ft. lbs.).
7. Position bracket on steering pump inboard stud. Then install remaining adapter attaching nut on stud. Tighten nut to 24 Nm (18 ft. lbs.).
8. Connect oil feed line to vacuum pump connector and tighten line fitting.
9. Connect steering pump pressure and return lines to pump. Tighten pressure line fitting to 30 Nm (22 ft. lbs.).
10. Connect vacuum hose to vacuum pump.
11. Connect battery cables, if removed.
12. Fill power steering pump reservoir and Purge air from steering pump lines.