How to Rebuild a Power Steering Rack

Freddy from PoorManMods shows you how to rebuild a power steering rack using the old rack out of his 1988 Toyota supra that was leaking BAD from the outer seals. It is recommend you watch the step by step video as well as read this guide, then also find the service manual for your vehicle.

Click here for rebuild kit used in video

Supplies

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ATF/power steering fluid

Outer tie rod tool

Flare/line wrench set

Moly grease

Seal driver kit

Disassemble Rack Pt 1

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Remove the outer and inner tie roads. An inner tie rod removal tool may be required to remove the inner tie roads from the steering rack.

Disassemble Rack Pt 2

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Remove the 2 large threaded caps on the rack and remove everything inside

Disassemble Rack Pt 3

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Using flare wrenches, remove all the lines on the front of the rack

Disassemble Rack Pt4

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Remove the steering pinion gear from the rack then its o-ring and seal

Disassemble Rack Pt6

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One side of the rack will have a snap ring. Remove the snap ring then with the help of gravity remove the bearing and seals. Then using a long extension or something similar, insert it into the rack casing and tap it to completely remove the rack itself.

Disassemble Rack Pt7

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Insert a long extension with a socket (we had to wrap ours in tape to make it the perfect diameter) into the rack housing and tap on the inner seal to remove it

Rack Piston Seal Replacement

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Using a pick, carefully remove the old piston seal. Then using a roll of plastic, make a cone to slide on a the new piston real, be sure to lubricate the seal with ATF. Then once installed into the grove, wrap the plastic around the seal and hose clamp it for bit to make sure it goes back to its original size. This is very important.

Pinion Seals

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Install the pinion o-ring and seal

Inner Seal

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Lubricate the inner seal and install with a seal driver

Install the Rack

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Wrap the splined end of the rack with electrical tape to protect the seal during installation. lubricate entire rack with ATF then tap the rack into place, through the inner seal. Once rack is installed, remove all the electrical tape.

Outer Seal

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Wrap just the end of the rack with electrical tape, then install outer seal with its components and tap them in with a large socket.

Pinion Install

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Apply grease the springs on the rack and the pinion. Then install the minion mating it to the splines on the rack.

Final Steps

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Install the red of the goodies into the front of the rack along with the 2 thread caps and torque them to spec. Then reinstall all of the lines. Now your rack rebuild is essentially complete. Install the rack back into the vehicle, you can install the tie rods before or after its in the car.