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.

1. Remove snap ring, then remove drive shaft.

CAUTION: Be careful not to drop drive shaft.





2. Remove oil seal.

CAUTION: Be careful not to damage front housing.





3. Remove connector and flow control valve with spring.

CAUTION: 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:





1. Make sure O-rings and oil seal are properly installed.
2. Always install new O-rings and oil seal.
3. Be careful of oil seal direction. Cam ring, rotor and vanes must be replaced as a set if necessary.
4. Coat each part with ATF when assembling.





5. Pay attention to the direction of rotor.





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





7. Insert pin (2) into pin groove (1) of front housing and front side plate. Then install cam ring (3) as shown. Cam ring: D1 is less than D2