Piston

Disassembly

1. Remove the Teflon® piston seal and O-ring from the piston and ball nut. Discard both seal and O-ring.

Assembly

1. Dip a new O-ring in Premium Power Steering Fluid E6AZ-19582-AA or equivalent meeting Ford specification ESW-M2C33-F and install it on the piston and ball nut.

2. Install a new Teflon® piston seal on the piston and ball nut being careful not to stretch it any more than necessary.

   
   
   
   
   
   

   Item	Part Number	Description
   1	—	Piston Ring (Part of 3E502)
   2	—	Piston (Part of 3D517)
   3	3D517	Power Steering Gear Input Shaft and Control
   4	3D627	Power Steering Gear Race Nut
   5	—	O-Ring (Part of 3D517)
   6	382095-S	Race Lock Nut Setscrew
   7	—	Valve Housing (Part of 3504)
   8	—	Valve Sleeve Seals (Part of 3D517)
   9	388889-S	Screws
   10	3544	Steering Gear Ball Return Guide Clamp
   11	3523	Steering Gear Ball Return Guide
   12	3647	Steering Gear Worm Ball
   13	3805	Power Steering Gear Piston Seal