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Reassembly (Tacoma & 4Runner 4-Cylinder)

  1. Coat all internal components with power steering fluid. Cover serrated part of shaft with vinyl tape. Press pump shaft with bearing into housing. Install NEW snap ring in front housing. Install 2 NEW straight pins into front housing.
  2. Align holes of cam ring and 2 straight pins, and install cam ring with mark facing outward. Install pump rotor with mark facing outward. Install NEW snap ring on pump shaft. Install 10 vane plates, with round end facing outward.
  3. Install a NEW gasket on front housing. Install side plate, aligning holes with straight pins. Install wave washer so protrusions fit into slots in side plate.
  4. Coat 2 NEW "O" rings with power steering fluid. Install "O" rings into pump rear housing. Install rear housing and tighten bolts to specification. See TORQUE SPECIFICATIONS .
  5. Install flow control spring and valve. Ensure valve is facing correct direction. Coat a NEW "O" ring with power steering fluid. Install "O" ring to pressure port union. Tighten union to specification. See TORQUE SPECIFICATIONS .
  6. Install fluid reservoir with NEW "O" ring. Tighten bolts to specification. See TORQUE SPECIFICATIONS .
  7. Position and hold pump pulley, and install nut. Tighten nut to specification. See TORQUE SPECIFICATIONS . Measure pump rotating torque. Using a torque wrench, check pump rotating torque. Rotating torque should be 2.4 INCH lbs. (.3 N.m) or less.
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