Power Steering Pump: Service and Repair

PRE-DISASSEMBLY INSPECTION





Disassemble the power steering pump only if the following items are found:
- Fluid 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.
^ When disassembling and reassembling, do not let foreign matter enter or contact the parts.





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





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





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

INSPECTION
- If pulley is cracked or deformed, replace it.
- If an oil leak is found around pulley shaft oil seal, replace the seal.
- If serration on pulley or pulley shaft is deformed or worn, replace it.

ASSEMBLY





Assemble power steering 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 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 front side plate. Then install cam ring (3) as shown at left.

Cam ring: D1 is less than D2