Power Steering Gear: Replacement

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

REPLACE OIL SEAL AND BEARING
1. Using SST, press out the oil seal and bearing from the control valve housing.
  SST 09950-60010 (09951-00260), 09950-70010 (09951-07150)
2. Coat a new oil seal lip with power steering fluid.
3. Using SST, press in the oil seal.
  SST 09950-60010 (09951-00180, 09951-00330, 09952-06010), 09950-70010 (09951-07150)
  
  NOTE: Make sure to install the oil seal facing in the correct direction.
  
  Fig 1: Pressing Out Oil Seal & Bearing From Control Valve Housing Using SST
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Coat a new bearing with power steering fluid.
  
  Fig 2: Pressing In Oil Seal Using SST
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Using SST, press in the bearing.
  SST 09950-60010 (09951-00330), 09950-70010 (09951-07150)
  
  Fig 3: Pressing In Bearing Using SST
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REPLACE POWER STEERING GEAR HOUSING NEEDLE ROLLER BEARING
1. Using SST, press out the oil seal from the bearing guide nut.
  SST 09950-60010 (09951-00320), 09950-70010 (09951-07100)
  
  Fig 4: Pressing Out Oil Seal From Bearing Guide Nut Using SST
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Coat a new oil seal lip with power steering fluid.
3. Using SST, press in the oil seal.
  SST 09950-60010 (09951-00280, 09951-00360, 09952-06010), 09950-70010 (09951-07100)
  
  NOTE: Make sure to install the oil seal facing in the correct direction.
  
  Fig 5: Pressing In Oil Seal Using SST
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT BUSH
1. Check the inside of the bush of the cylinder end stopper for cracks. If the bush is faulty, replace the bush.
2. Apply molybdenum disulfide lithium base grease to the inside of the bush.
  
  Fig 6: Checking Inside Of Bush Of Cylinder End Stopper
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REPLACE BUSH
1. Using a screwdriver, remove the bush from the cylinder end stopper.
  NOTE: Be careful not to damage the cylinder end stopper.
2. Coat the inside a new bush with molybdenum disulfide lithium base grease.
3. Install the bush.
  
  Fig 7: Removing Bush Using Screwdriver
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REPLACE TEFLON RING AND O-RING
1. Using a screwdriver, remove the Teflon ring and O-ring from the steering rack.
  NOTE: Be careful not to damage the groove for the ring.
2. Coat a new O-ring with power steering fluid and install it.
3. Expand a new Teflon ring with your fingers.
  
  Fig 8: Removing Teflon Ring & O-Ring Using Screwdriver
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NOTE: Be careful not to overexpand the ring.
  
  Fig 9: Expanding New Teflon Ring With Your Fingers
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Coat the ring with power steering fluid.
5. Install the ring to the rack, and settle it down with your fingers.
  
  Fig 10: Installing Ring To Rack
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REPLACE TEFLON RINGS
1. Using a screwdriver, remove the 4 Teflon rings from the control valve assembly.
  NOTE: Be careful not to damage the grooves for the ring.
  
  Fig 11: Removing Teflon Rings Using Screwdriver
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Expand 4 new rings with your fingers.
  NOTE: Be careful not to overexpand the ring.
3. Coat the rings with power steering fluid.
4. Install the rings to the control valve assembly, and settle them down with your fingers.
5. Carefully slide the tapered end of SST over the rings until the ring fits to the steering rack.
  SST 09631-20081
  
  NOTE: Be careful not to damage the rings.
  
  Fig 12: Installing Rings To Control Valve Assembly
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REPLACE VALVE BODY HOUSING UNION SEAT
1. Using a screw extractor, remove the union seat from the control valve housing.
2. Using a plastic-faced hammer and sliding handle, lightly tap in a new union seat.
  
  Fig 13: Removing Union Seat From Control Valve Housing
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NOTE: Before installing the union seat, remove dust sticking to the control valve housing.
  
  Fig 14: Tapping In New Union Seat
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002