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.

Inspection
PULLEY AND PULLEY SHAFT
- 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.

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.
- Be careful not to drop drive shaft.





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





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

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 Genuine NISSAN PSF II or equivalent* when assembling.
*: Genuine NISSAN PSF, Canada NISSAN Automatic Transmission Fluid, Dextron(tm)III/Mercon(tm) or equivalent ATF may also be used.





- 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