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Steering gearbox reseal

From 1992 Ford Bronco “Money pit” — documented by Richard Cherico.

27 photos
1992 Ford Bronco - Input shaft seal kit 1992 Ford Bronco - Input shaft seal kit. There are lots of pieces, but you will have three left over. 1992 Ford Bronco - Sector shaft seal kit 1992 Ford Bronco - Sector shaft seal kit. You will use all of the pieces. 1992 Ford Bronco - The gearbox removed from the vehicle 1992 Ford Bronco - Remove the valve body bolts 1992 Ford Bronco - Pry out the dust cap 1992 Ford Bronco - Remove the snap ring 1992 Ford Bronco - Separate the valve body. Just underneath it, there is an allen-head set screw. Remove this, and then you can use a drift and hammer to remo… 1992 Ford Bronco - Use a large socket and extension to drive the bearing and seal out of the valve housing. This shows how they are oriented relative to each… 1992 Ford Bronco - Here is the valve body by itself. There is a large o-ring that goes between this and the gearbox. 1992 Ford Bronco - Reinstall the bearing, then drive the seal just far enough in so that you can reinstall the snap ring. 1992 Ford Bronco - Reinstall the dust cap in this orientation. 1992 Ford Bronco - Remove the two bolts that hold the sector shaft in, then drive it up from the bottom. Do NOT remove the adjusting nut like I did. The secto… 1992 Ford Bronco - Here it is with the sector shaft out. You can now pull the piston and worm gear straight out of the box. 1992 Ford Bronco - Here is the piston with worm gear installed. Remove the two bolts, and then the two half-moon ball bearing guides. Rotate the worm gear to… 1992 Ford Bronco - Here is the worm drive. You will need to cut or slide off the old teflon seals and install the new ones, being careful not to stretch them… 1992 Ford Bronco - Reinstalling the worm gear. Notice that the ball retainer is not installed yet. You will need to rotate the worm gear back and forth to get… 1992 Ford Bronco - Here is the piston and the valve body, ready for reinstallation. 1992 Ford Bronco - Remove the o-ring over the sector shaft, then remove the seals. You may have to use a pick to remove the rubber around the o-ring in order… 1992 Ford Bronco - Install the new sector shaft seals. This is the correct orientation. That lip is what makes the old snap ring difficult to remove. Again, j… 1992 Ford Bronco - Here are the new seals and snap ring installed. 1992 Ford Bronco - Reinstall the piston and position it like this. I found it helpful to coat the teflon ring in fresh power steering fluid before installing.… 1992 Ford Bronco - Don't forget to replace this small o-ring before reinstalling the valve body. Lubricate the four teflon rings with fresh power steering flu… 1992 Ford Bronco - Here is the empty gearbox 1992 Ford Bronco - Here is the sector shaft itself 1992 Ford Bronco - Here are my ex-snap ring pliers. Time to invest in some Snap-On ones.