How to Rebuild a Leaking Honda Power Steering Pump Using an OEM Seal Kit: Save Hundreds & Restore Smooth Steering
There’s a specific kind of satisfaction that comes from fixing a nagging problem on your Honda yourself—especially when it saves you a trip to the mechanic and a few hundred bucks in labor.
If you’ve noticed a puddle of reddish fluid under your Civic, Accord, or CR-V, or heard your power steering pump start to whine like a tired dog, you’re not alone. Power steering pump leaks are a common issue on older Hondas, but here’s the good news: you don’t need to replace the whole pump. In most cases, a simple rebuild using an OEM seal kit is all it takes to get things back to normal.
TL;DR
This guide walks you through rebuilding a leaking Honda power steering pump using an official OEM seal kit. We’ll cover the tools you need, how to remove the pump, a step-by-step disassembly and reassembly process, and crucial tips for a leak-free installation. By the end, you’ll have saved money, gained confidence, and restored your Honda’s steering to its factory-smooth feel.
Key Takeaways
- A leaking power steering pump on a Honda is often caused by dried-out, flat O-rings that can be replaced with an OEM seal kit.
- Using Genuine Honda Power Steering Fluid is critical for preventing pump whine and ensuring long-term reliability .
- The most common leak point is the O-ring between the pump housing and the cover, or the pump shaft seal.
- Taking your time during disassembly will help you avoid dropping the pump’s internal vanes, which are directional.
- This job is a weekend DIY project that can save you hundreds of dollars over a replacement pump.
Why Rebuild Instead of Replace?
If you’ve priced a new or remanufactured power steering pump for your Honda, you know they aren’t cheap. Reman units can run $150-$300, while OEM new ones are even more. Meanwhile, a genuine Honda OEM Seal Kit is often around $30-$60 . For the cost of a shop diagnostic fee, you can buy the kit and a few bottles of the proper fluid, and have a freshly sealed pump.
Plus, there’s something to be said about keeping the original, factory-installed pump in your car. Aftermarket remanufactured pumps sometimes have a poor reputation for quality and black paint jobs that flake off .
The Real-World Impact: What Happens If You Ignore It?
Ignoring a power steering leak isn’t just about topping up fluid.
- Belt Damage: The leaking fluid often drips onto the drive belt and pulleys. Over time, the belt can become glazed and slippery, leading to squealing and eventually breakage .
- Pump Failure: Running the pump low on fluid can cause it to overheat and wear out the internal vanes, leading to a full pump failure.
- Steering Issues: Air gets sucked into the system through the leak, which creates a whining noise and can make steering feel jerky or heavy .
How to Rebuild a Leaking Honda Power Steering Pump Using an OEM Seal Kit
Tools & Parts You’ll Need
Before you start, make sure you have everything ready.
- Genuine Honda OEM Seal Kit: Verify the correct part number for your model. For many Hondas, it’s 06561-RV0-000 .
- Genuine Honda Power Steering Fluid: Buy at least 2-3 bottles. This is crucial; aftermarket fluids are known to cause seals to swell .
- Tools:
- 19mm socket and wrench (for the pulley nut)
- 10mm and 12mm sockets
- 10mm hex (Allen) key or socket
- Snap-ring pliers
- Torque wrench
- A vice (highly recommended)
- Small flat-head screwdrivers or picks
- A turkey baster (for removing old fluid)
- Brake cleaner and rags
Step 1: Remove the Pump from the Vehicle
- Prep the Vehicle: Park on a level surface and let the engine cool down.
- Remove the Belt: Loosen the tensioner and slip the drive belt off the power steering pulley.
- Remove the Pulley: Use a 19mm socket to remove the pulley nut. A trick to keep the pulley from spinning is to wedge a long socket extension through one of the pulley holes, resting it against the pump housing or a solid part of the engine .
- Disconnect Lines: Place a drain pan underneath. Disconnect the return hose (low pressure) from the reservoir or pump. The high-pressure line will be bolted on; use a flare nut wrench if possible to avoid stripping it.
- Remove the Pump: Unbolt the pump from its bracket (usually two bolts). It should slide right out.
Step 2: Disassemble the Pump (The Critical Part)
- Clean the Exterior: Spray the outside of the pump with brake cleaner and wipe it clean. This prevents dirt from falling inside during disassembly .
- Remove the Back Cover: Place the pump in a vice with soft jaws. Remove the four 12mm bolts holding the back cover on.
- Separate Carefully: This is where you need to be careful. When you lift the cover, the internal vanes and rotor might want to fall out . Keep the pump assembly upright and gently wiggle the housing off the shaft. EricTheCarGuy’s video demonstrates keeping the whole assembly together to avoid misplacing vanes .
- Remove the Shaft Seal: Look inside the front housing. You’ll see a metal spacer/washer, and behind it, the shaft seal. Use a small screwdriver to gently pry the old seal out from the backside or groove, being careful not to scratch the aluminum housing .
- Remove the Flow Valve Cap: Use a 10mm hex key to remove the cap on the side of the pump. Watch for the spring and flow valve inside. Replace the O-ring on the cap .
- Replace the Bearing (Optional): Check the front bearing for play or roughness. If it’s over 100,000 miles, it’s a good idea to replace it. Use a press or a bearing puller to remove the old one and press in the new one (NTN 6203LU is a common replacement) . This step isn’t always included in the seal kit but is worth it for peace of mind.
Step 3: Reassemble with New Seals
- Clean Everything: Clean all parts with brake cleaner.
- Install New Shaft Seal: Coat the new seal with power steering fluid. Gently tap it into the housing using a socket that matches its diameter until it’s flush with the surface .
- Replace O-Rings: You will find a few different-sized O-rings in your kit .
- The large, flat one (68.5mm) goes between the pump housing and the back cover .
- The smaller ones are for the suction port and the flow valve .
- Reinstall the Back Cover: Align the rotor and vanes carefully as you slide the cover back on. The cover only fits one way. Torque the four bolts to 14 lb-ft .
- Install the Flow Valve: Put the spring and valve back, and screw the cap back in. Torque this to 36 lb-ft .
- Install the Pulley Nut: Tighten the 19mm pulley nut to 47 lb-ft using the same wedge trick .
Step 4: Reinstall and Bleed the System
- Reinstall the Pump: Mount the pump back on the bracket, reconnect the hoses (use new O-rings for the banjo bolt connections if supplied).
- Fill with Honda Fluid: Fill the reservoir with Genuine Honda Power Steering Fluid.
- Bleed the Air:
- The Pro Method: Disconnect the return line and cap the reservoir’s return port. Place the return line into a bucket. Have an assistant start the engine and slowly turn the wheel lock-to-lock while you pour new fluid into the reservoir. This flushes the old fluid and expels air.
- The Standard Method: With the front wheels off the ground, start the engine. Slowly turn the wheel lock-to-lock about 5-10 times. Check the fluid level frequently, as it will drop as air escapes .
- Check for Leaks: Inspect all connections and the pump for any drips.
The Case for OEM: Why the Seals Matter
There’s a reason seasoned Honda owners swear by OEM parts for this job. The seals aren’t just generic rubber. They are designed to withstand the specific pressures and temperatures of your Honda’s system.
“The housing o-ring looked so flat and hard, you can mistake it as a regular washer.”
While aftermarket kits like Edelmann are tempting for a fraction of the price , many owners opt for OEM (like the Honda 91349-PY3-000 for the cover seal) to guarantee the fix lasts for years, not months. The durability of the OEM materials means you’ll rebuild it once, not twice.
Chart: Cost Comparison of Honda Power Steering Pump Repair Options
Cost-Effectiveness of Rebuild vs. Replacement
FAQ Section
Q: How long does it take to rebuild a Honda power steering pump?
For a first-timer, plan for about 2-3 hours of work. This gives you time to work carefully and avoid mistakes.
Q: Do I need special tools to rebuild my Honda’s power steering pump?
Basic hand tools (sockets, wrenches) will get most of the job done. A vise and snap-ring pliers are helpful, but not strictly mandatory.
Q: What are the signs that my Honda power steering pump is failing?
The most common signs are a whining or groaning noise when turning the wheel, foamy fluid in the reservoir, and fluid leaks under the front of the car .
Q: Why do I have to use Genuine Honda Power Steering Fluid?
Honda power steering systems are very picky. Generic fluid can cause the seals to swell or shrink, leading to more leaks and premature pump failure .
Q: What usually leaks on a Honda power steering pump?
The most common leak sources are the large O-ring between the pump housing and the back cover, and the front shaft seal .
Q: Can I just replace the O-ring without removing the pump?
The suction inlet O-ring can sometimes be replaced without removing the pump if you have good access, but most internal seals require pump removal for proper repair.
Q: Is rebuilding a power steering pump worth the time?
Absolutely. It costs around $60 for the OEM seal kit and fluid, saving you over $200 to $300 compared to buying a new or remanufactured pump.
References
For further reading about Honda reliability and repairs:
Rebuilding your Honda’s power steering pump isn’t just a repair; it’s a right of passage for any DIY owner. It’s a straightforward job that saves a ton of money, and the feeling of that perfect, smooth steering afterward is incredibly rewarding.
Have you ever rebuilt a power steering pump before? What tips or tricks did you find helpful? Drop your thoughts in the comments below.
