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Power Rack & Pinion: Removal & Installation Lexus LS III

Steering Gear ~671 words

Removal & Installation (ES300 & RX300)

On ES300 models, remove right front fender apron seal. On RX300 models, remove oil pressure switch. On all models, remove clamps and disconnect pressure line and return hose. Remove drive belt. Loosen mounting bolt, remove adjusting bolt, and remove power steering pump. To install, reverse removal procedure. Fill and bleed system. See HYDRAULIC SYSTEM BLEEDING under LUBRICATION.

Note. Upper mounting bolt cannot be removed.

Removal & Installation (GS300)

Remove engine under cover. Rotate drive belt tensioner clockwise to release belt tension. Disengage belt from power steering pump pulley. Remove clamps and disconnect pressure line and return hose. Remove mounting bolts and remove pump. To install, reverse removal procedure. Fill and bleed system. See HYDRAULIC SYSTEM BLEEDING under LUBRICATION.

Removal & Installation (GS430)

  1. Remove 16 bolts and engine under cover. Remove right rear engine under cover. Remove bolt and air cleaner inlet. Remove air cleaner assembly with air cleaner hose. Turn drive belt tensioner counterclockwise to release tension, and remove drive belt. Disconnect vacuum and return hoses.
  2. Remove pressure feed tube. Remove mounting bolts and power steering pump. To install, reverse removal procedure. Fill and bleed system. See «HYDRAULIC SYSTEM BLEEDING»(ref-127903-S26215235322001103000000) under LUBRICATION.

Removal & Installation (IS300)

  1. Remove 16 screws, clip and No. 1 engine under cover. Turn drive belt tensioner clockwise to release tension, and remove drive belt. Disconnect oil pressure switch connector. Disconnect return hose.
  2. Remove union bolt and gasket. Disconnect pressure feed tube. Remove mounting bolts and power steering pump. To install, reverse removal procedure. Fill and bleed system. See «HYDRAULIC SYSTEM BLEEDING»(ref-127903-S26215235322001103000000) under LUBRICATION.

Removal & Installation (LS430)

  1. Remove engine undercover and air cleaner assembly. Rotate drive belt tensioner counterclockwise to release tension, and remove belt. Disconnect vacuum and return hoses.
  2. Disconnect 2 tube clamps. Disconnect pressure feed tube. Remove power steering pump assembly with pressure feed tube. To install, reverse removal procedure. Use NEW gaskets and "O" rings when installing pressure line fitting. Fill and bleed system. See «HYDRAULIC SYSTEM BLEEDING»(ref-127903-S26215235322001103000000) under LUBRICATION.

Note. Before removing power rack and pinion, secure steering wheel in centered position. Remove steering wheel pad and steering wheel. If steering wheel moves during removal or installation procedure, air bag cable reel must be re-centered. See CABLE REEL under ADJUSTMENTS.

Removal (ES300 & RX300)

  1. On all models, disconnect tie-rod ends. Disconnect intermediate shaft assembly. Disconnect clamp plate. Disconnect pressure feed and return tubes.
  2. On ES300, disconnect stabilizer bar. Remove No. 1 fuel tube protector. On all models, remove mounting bolts and nuts. Remove power steering gear assembly from left side of vehicle.
  3. To install, reverse removal procedure. Check wheel alignment. See SPECIFICATIONS & PROCEDURES article in WHEEL ALIGNMENT. Fill and bleed system. See «HYDRAULIC SYSTEM BLEEDING»(ref-127903-S26215235322001103000000) under LUBRICATION.

Removal & Installation (GS300 & GS430)

  1. Disconnect tie rod ends. Disconnect intermediate shaft assembly. Remove 6 bolts and front suspension member brace. Disconnect pressure feed tube and return tube. Disconnect tube clamps. Remove mounting bolts and power steering gear. Remove bracket and grommet.
  2. To install, reverse removal procedure. Check wheel alignment. See SPECIFICATIONS & PROCEDURES article in WHEEL ALIGNMENT. Fill and bleed system. See «HYDRAULIC SYSTEM BLEEDING»(ref-127903-S26215235322001103000000) under LUBRICATION.
  1. Remove front brake calipers. See DISC & DRUM article in BRAKES. Remove tie rod ends. Remove No. 2 engine under cover. Disconnect sliding yoke.
  2. Remove front suspension member brace. Disconnect pressure feed tube and return tube. Remove power steering gear assembly, bracket and grommet.
  3. To install, reverse removal procedure. Check wheel alignment. See SPECIFICATIONS & PROCEDURES article in WHEEL ALIGNMENT. Fill and bleed system. See «HYDRAULIC SYSTEM BLEEDING»(ref-127903-S26215235322001103000000) under LUBRICATION.
  1. Disconnect tie rod ends. Disconnect No. 3 intermediate shaft. Disconnect pressure feed tube and return tube. Remove PPS solenoid connector. Remove 2 nuts and power steering gear assembly. Place match marks on No. 3 intermediate shaft and control valve shaft. Remove bolt and No. 3 intermediate shaft.
  2. To install, reverse removal procedure. Check wheel alignment. See SPECIFICATIONS & PROCEDURES article in WHEEL ALIGNMENT. Fill and bleed system. See «HYDRAULIC SYSTEM BLEEDING»(ref-127903-S26215235322001103000000) under LUBRICATION.

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