Power Steering Pump: Service and Repair

PRE-DISASSEMBLY INSPECTION
Disassemble the power steering oil pump only if the following items are found.





- Oil leak from any point shown in the figure
- Deformed or damaged pulley
- Poor performance

DISASSEMBLY

CAUTION:
^ Parts which can be disassembled are strictly limited. Never disassemble parts other than those specified. Disassemble in as clean a place as possible.
^ Clean your hands before disassembly.
^ Do not use rags; use nylon cloths or paper towels.
^ Follow the procedures and cautions in the Service Manual.
^ When disassembling and reassembling, do not let foreign matter enter or contact the parts.





- Remove snap ring, then draw drive shaft out.
Be careful not to drop drive shaft.





- Remove oil seal.
Be careful not to damage front housing.





- Remove connector.
Be careful not to drop flow control valve.

INSPECTION
Inspect each component part for wear, deformation, scratches and cracks. If damage is found, replace the part.

ASSEMBLY





Assemble oil pump, noting the following instructions. Make sure O-rings and oil seal are properly installed.
- Always install new O-rings and oil seal.
- Be careful of oil seal direction.
- Cam ring, rotor and vanes must be replaced as a set if necessary.
- Coat each part with Automatic Transmission Fluid (ATF) when assembling.





- Pay attention to the direction of rotor.





- When assembling vanes to rotor, rounded surfaces of vanes must face cam ring side.





- Insert pin (2) into pin groove (1) of front housing and rotor. Then install cam ring (3) as shown at left.