GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Corvette 🢒 Steering 🢒 Power Steering System 🢒 Power Steering Pump Description

Object Number: 82254 Size: LF
(1)Pressure Plate Spring
(2)O-Ring Seal
(3)Sleeve Assembly
(4)Dowel Pin
(5)Hydraulic Pump Housing Assembly
(6)Drive Shaft Seal
(7)Drive Shaft
(8)Ball Bearing Assembly
(9)Retaining Ring
(10)Flow Control Spring
(11)Control Valve Assembly
(12)O-Ring Seal
(13)O-Ring Unioin Fitting
(14)Thrust Plate Retaining Ring
(15)Thrust Plate Assembly
(16)O-Ring Seal
(17)Pump Ring
(18)Pump Rotor
(19)Vane (10)
(20)Pump Ring Dowel Pins
(21)Pressure Plate
(22)O-Ring Seal

The constant displacement vane type pump provides hydraulic pressure and flow for the steering system. The pump is belt driven by the power steering pump pulley and crankshaft pulley. The opening at the rear of the pump housing contains:

    • The pump ring
    • The pressure plate
    • The thrust plate
    • The rotor
    • The vanes
    • The end plate

A small opening on the side of the housing contains the pressure line fitting. A pressure relief valve inside the flow control valve limits the pump pressure.