🔧 F-350 Super Duty - Power Steering Pump Replacement

You’ll be removing the belt-driven power steering pump, swapping the pulley over to the new pump, then refilling and bleeding the system so steering assist works quietly and smoothly. On your F-350 Super Duty, keeping dirt out of the hoses is the biggest “make-or-break” detail.

Difficulty Level: Advanced | Estimated Time: 2.5-5.0 hours

Assumption: stock hydraulic power steering (belt-driven pump).

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⚠️ Safety & Precautions

• ⚠️ Work on a cool engine; the belt drive and fluid can be hot.
• ⚠️ Support the truck with jack stands before going underneath.
• ⚠️ Power steering fluid is slippery and flammable—wipe spills immediately.
• ⚠️ Keep all hose ends capped; even small dirt can damage the new pump.
• ⚠️ Don’t hold the steering at full lock during bleeding; it can overheat the fluid.
• ⚠️ Battery disconnect is recommended anytime you’re working near the fan/belt area.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Drain pan (at least 8-quart)
• Fender cover
• Serpentine belt tool (1/2-inch drive)
• 3/8-inch drive ratchet
• 1/2-inch drive ratchet
• Socket set (8mm-19mm)
• Wrench set (10mm-19mm)
• Line wrench set (flare nut wrenches)
• Torque wrench (10-150 ft-lbs)
• Power steering pulley puller/installer kit (specialty)
• Hose clamp pliers
• Trim clip removal tool
• Flat-blade screwdriver
• Shop rags
• Brake cleaner spray
• Fluid transfer pump
• Caps/plugs assortment for hoses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Power steering pump - Qty: 1
• Power steering pump reservoir O-ring/seal (if serviced separately) - Qty: 1
• High-pressure line O-ring/seal kit (pump-end) - Qty: 1
• Power steering return hose clamp - Qty: 1
• Power steering fluid (Motorcraft MERCON LV ATF or equivalent) - Qty: 2-3 quarts
• Serpentine belt (recommended if cracked/glazed) - Qty: 1

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📋 Before You Begin

• Park on level ground, set the parking brake, and chock the rear wheels.
• Disconnect the negative battery cable using a 10mm socket.
• Lift the front end and support it securely on jack stands so the front wheels can turn freely during bleeding.
• Clean the pump/line area with brake cleaner spray and shop rags so dirt can’t fall into open ports.
• Have your caps/plugs assortment for hoses ready to cap lines immediately after disconnecting.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove intake/air ducting for access (if equipped)

• Remove any engine cover/ducting using a flat-blade screwdriver and socket set (8mm-10mm).
• Pop any push-clips with a trim clip removal tool.
• Take a photo before removing hoses.

Step 2: Drain as much power steering fluid as possible

• Place a drain pan under the pump area.
• Use a fluid transfer pump to suck fluid out of the reservoir.
• Use hose clamp pliers to release the return hose clamp, then pull the return hose off carefully.
• Immediately cap the hose and reservoir port using your caps/plugs assortment for hoses.

Step 3: Release the serpentine belt from the pump pulley

• Use a serpentine belt tool (1/2-inch drive) to rotate the belt tensioner and slip the belt off the power steering pump pulley.
• Inspect the belt; if it’s cracked, shiny, or frayed, replace it.

Step 4: Disconnect the high-pressure line at the pump

• Place shop rags under the fitting to catch drips.
• Use the correct-size line wrench set (flare nut wrenches) to loosen the high-pressure line fitting at the pump.
• Cap the line and the pump port immediately using caps/plugs assortment for hoses.
• Line wrenches grip more flats to prevent rounding.

Step 5: Remove the pump mounting fasteners

• Remove the pump bolts using a ratchet and socket set.
• Support the pump as the last bolt comes out so it doesn’t drop or stress any lines.
• Set the pump on a bench with rags underneath.
• Torque to Ford spec per service information when reinstalling mounting bolts.

Step 6: Transfer the pulley to the new pump

• Use a power steering pulley puller/installer kit (specialty) to pull the pulley off the old pump.
• Install the pulley onto the new pump using the installer from the same kit.
• Ensure the pulley sits at the same depth as it did on the old pump so the belt runs straight.
• Don’t hammer the pulley—use the installer only.

Step 7: Install the new pump

• Position the new pump and start all mounting bolts by hand to avoid cross-threading.
• Tighten using a ratchet first, then final-tighten with a torque wrench.
• Torque to Ford spec per service information.

Step 8: Reconnect the high-pressure line with new seals

• Install the new O-ring/seal on the fitting as applicable (lightly wet it with clean fluid).
• Thread the fitting in by hand first, then tighten with a line wrench set (flare nut wrenches).
• Torque to Ford spec per service information.

Step 9: Reconnect the return hose

• Push the return hose fully onto the reservoir/pump nipple.
• Install a new clamp using hose clamp pliers.
• Wipe all connection points clean with shop rags.

Step 10: Reinstall the serpentine belt

• Route the belt correctly (use the under-hood belt routing diagram).
• Use the serpentine belt tool (1/2-inch drive) to rotate the tensioner and slip the belt onto the pump pulley.
• Visually confirm the belt is seated in every pulley groove.

Step 11: Refill fluid and bleed the system (engine OFF first)

• Fill the reservoir with Power steering fluid (Motorcraft MERCON LV ATF or equivalent).
• With the front wheels off the ground, turn the steering wheel slowly from left to right lock about 10 times.
• Pause at each end for 1 second only (do not force it).
• Recheck fluid level and top off as needed.
• Slow turns reduce foaming.

Step 12: Bleed the system (engine ON)

• Reconnect the negative battery cable using a 10mm socket.
• Start the engine and let it idle.
• Turn the steering wheel slowly left/right several times while watching the reservoir level.
• If the fluid looks milky/foamy, shut the engine off and let it sit 10–15 minutes, then repeat the bleed.
• Check for leaks at the pressure fitting and return hose.

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✅ After Repair

• With the engine idling, verify steering assist is smooth and quiet (no whining).
• Inspect for leaks after a short drive and again the next day.
• Recheck fluid level when fully warmed up; top off only to the correct mark.
• If you still have noise, repeat bleeding with the front wheels raised.

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💰 DIY vs Shop Cost

Shop Cost: $550-$1,050 (parts + labor)

DIY Cost: $180-$450 (parts only)

You Save: $370-$600 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2.5-4.0 hours.

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🎯 Ready to get started?

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