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Home >> Infiniti >> 2003 >> M45 >> Repair and Diagnosis >> Steering >> Power Steering >> Steering System >> Power Steering Gear And Linkage >> Disassembly and Assembly >> Disassembly
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Disassembly and Assembly: Disassembly

  1. Remove EPS solenoid valve assembly.
    Fig 1: Identifying EPS Solenoid Valve And Cylinder Tubes
    G02025394Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Remove O-ring from gear housing assembly.
  3. Remove cylinder tubes from gear housing assembly.
  4. Remove rear cover cap from sub-gear assembly.
  5. Measure projection height of adjusting screw from gear housing, then loosen adjusting screw.
    NOTE:
    • Do not attempt to disassemble EPS solenoid valve.
    • Do not turn adjusting screw more than twice.
    • Replace steering gear assembly when adjusting screw is removed or is turned more than twice.
    Fig 2: Identifying Adjusting Screw (Cross Section)
    G02025395Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Remove bolts of sub-gear assembly and remove sub-gear assembly from gear housing assembly.
    NOTE: Do not overhaul sub-gear assembly because it is non-overhaul part. If there is something wrong with sub-gear assembly, replace with new one.
  7. Loosen lock nut, and remove outer socket.
  8. Remove boot clamps of small diameter side and large diameter side, then remove boots.
    NOTE: On removing boots, be careful not to damage inner socket and gear housing assembly. If they are damaged, replace them to avoid oil leaks.
  9. Move spacer ring to rack side, raise caulking part (at two points of part A) of lock plate and loosen inner socket, then remove inner socket from rack.
    Fig 3: Identifying Steering Rack (Cross Section)
    G02025396Courtesy of NISSAN MOTOR CO., U.S.A.
  10. Drill out the punch caulking area on cylinder outer rim with a 3 mm (0.12 in) drill bit. [Drill for approx. 1.5 mm (0.059 in) in depth.]
    Fig 4: Drilling Punch On Cylinder Outer Rim
    G02025397Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Remove end cover with a 42 mm (1.65 in) open head (special service tool).
    NOTE: Be careful not to damage rack. If it is damaged, replace rack. Otherwise, oil leaks may result.
  12. Pull rack assembly with rack oil seal out of gear housing assembly.
  13. Heat the rack Teflon ring to approx. 40°C (104°F) with a dryer, then remove it and O-ring from rack.
    NOTE: Be careful not to damage rack. If it is damaged, replace with new one to avoid oil leaks.
    Fig 5: Heating Rack Teflon Ring
    G02025398Courtesy of NISSAN MOTOR CO., U.S.A.
  14. Use a taped 29 mm (1.14 in) socket and an extension bar, push out and remove rack oil seal together from gear housing assembly.
    NOTE:
    • Be careful not to damage gear housing assembly and cylinder inner wall.
    • If it is damaged, gear housing assembly must be replaced. Otherwise, oil leaks will result.
    Fig 6: Removing Rack Oil Seal
    G02025399Courtesy of NISSAN MOTOR CO., U.S.A.
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