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.

INSPECTION
^ If pulley and/or pulley shaft is cracked or deformed, replace it.
^ If fluid leak is found around the pulley shaft, replace the oil seal.

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 draw drive shaft out.

CAUTION: Be careful not to drop drive shaft.





2. Remove oil seal.

CAUTION: Be careful not to damage front housing.





3. Remove connector.

CAUTION: Be careful not to drop control valve.





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.
^ When assembling, coat each part with ATF.





^ 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. Cam ring: D1, is less than D2