Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSACURA20043.5RLREPAIR AND DIAGNOSISSTEERINGMANUAL STEERINGPOWER RACK & PINION STEERINGOVERHAULPUMPDISASSEMBLY
2004 Acura 3.5RL
Power Rack & Pinion Steering: Overhaul: Pump: Disassembly
2004 Acura 3.5RLSECTION Disassembly
NOTE:
See Fig 1
for exploded view of pump components.
- Hold the steering pump in a vise with soft jaws, hold the pulley with a Pulley Holder (07725-0030000), and remove the pulley nut and pulley. Be careful not to damage the pump housing with the jaws of the vise. Loosen the flow control valve cap with a hex wrench and remove.
- Remove the O-ring, flow control valve and spring. Remove the inlet joint and O-ring. Remove the pump cover and pump cover seal. Remove the outer side plate, pump cam ring, pump rotor, pump vanes, side plate and O-rings. Remove the snap ring, then remove the pump drive shaft by tapping the shaft end with a plastic hammer.
- Remove the pump seal spacer and pump seal.
- Inspection (Flow Control Valve)
Check the pressure control valve for wear, burrs, and other damage to the edges of the grooves in the valve. Inspect the bore of the flow control valve for scratches and wear. Slip the valve on the pump housing, and check that it moves in and out smoothly. If okay, got to next step; if not replace the pump as an assembly. The flow control valve is not available separately.
- Inspection (Flow Control Valve)
- Attach a hose to the end of the pressure control valve. Then submerge the pressure control valve in a container of power steering fluid or solvent, and blow in the hose. If air bubbles leak through the valve at less than 98 kPa (14.2 psi), repair as follows:
- Hold the bottom end of the valve with a open end wrench. Unscrew the seat in the top end of the valve, and remove any shims, the relief check ball, relief valve and relief valve spring. Clean all the parts in solvent, dry them off, then reassemble and retest the valve. If the flow control valve tests okay, reinstall it in the pump. If the flow control valve still leaks air, replace the pump as an assembly. The flow control valve is not available separately.NOTE: If necessary, relief pressure is adjusted at the factory by adding shims under the check ball seat. If you found shims in your valve, be sure you reinstall as many as you took out.
- Hold the bottom end of the valve with a open end wrench. Unscrew the seat in the top end of the valve, and remove any shims, the relief check ball, relief valve and relief valve spring. Clean all the parts in solvent, dry them off, then reassemble and retest the valve. If the flow control valve tests okay, reinstall it in the pump. If the flow control valve still leaks air, replace the pump as an assembly. The flow control valve is not available separately.
- Inspect the ball bearing by rotating the outer race slowly. If you feel any play (axial or radial) or roughness, remove the faulty ball bearing using a press and install a new ball bearing.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.