Assembly Procedure

Install the flow control spring (2) to the hydraulic pump housing assembly (1).
Install the control valve assembly (3).
Lubricate the new O-ring seal (4) with power steering fluid.

Fig 1: Exploded View Of Power Steering Pump
Courtesy of GENERAL MOTORS CORP.
Install the O-ring seal (4) on to the O-ring union fitting (5).
NOTE: Refer to Fastener Notice in Cautions and Notices.
Install the O-ring union fitting (5) into the hydraulic pump housing assembly (1).
Tighten: Tighten the O-ring union fitting to 75 N.m (55 lb ft).