Depends on the vehicle. -You haven't told us this vital info for giving you a good answer
The steering intermediate shaft connects the end of a column to the rack. The shaft can have more problems in a pickup than in a car.
Remove wheel and disconnect outer tie rod from lower control arm. Clearly mark original position of outer tie rod end on shaft and remove outer tie rod end. Remove rack and pinion boot revealing. Unscrew inner tie rod from rack and pinion assembly.
You need an inner tie rod tool. Looks like a pipe with a drive socket on one end, and a receiver on the other. Unbolt the outer tie rod from the knuckle, and loosen the lock nut on the rod. Either use a puller to remove the outer end, or hit the knuckle with a hammer, and remove the outer end from the knuckle. Unscrew the outer from the inner rod. [break the lock nut loose before removing the outer from the knuckle, or you will not be able to loosen it] Remove the bellows from the rack and inner rod. Use a drift or punch and a hammer to push the lock plate off the inner rod end. Place the correct adapter over the inner rod end, slide the rod inside the tool, and lock the receiver end of the tool on to the adapter. place a ratchet on the drive end of the tool, and remove the rod.
Remove the boot covering the end of the steering rack, There should be a thin flat washer between the tie rod and the steering rack that is flattened over the end of the inner tie rod end. Pry up the flattened points, unscrew the tie rod and reinstall.
An intermediate shaft is a part of a car. It connects the end of the steering column to the rack and pinion gear box and is used to eliminate torque sheer.
loosen lock nut on tie rod, just connect outer tie rod from spindle remove outer tie rod measure from lock nut to end of inner tie rod so on the new one you could put the lock nut back in the same spot, remove rubber boot over inner tie rod, you now need a special tie rod socket to remove inner tie rod or a crow foot and a long extension turn the steering wheel so the shaft on rack and pinion is sticking out so you could work on it remove inner tie rod installer in opposite order don't forget to put the new lock pin on new inner tie rod and alignment done so the toe setting is right if off you could wear you tires out
To install the inner tie rod end on a Quadrasteer system, first, safely lift and support the vehicle. Remove the outer tie rod end and any necessary components to access the inner tie rod. Use a tie rod end tool to unscrew the inner tie rod from the steering rack, then install the new inner tie rod by threading it into the rack. Finally, reassemble any removed components and ensure everything is properly torqued to manufacturer specifications.
Attached to steering rack and steering knuckles.
The steering wheel is connected to a shaft that goes out of the passenger compartment and into the engine compartment. At the end of that shaft there is a gear that is called a pinion gear. The pinion gear meshes with the steering rack [gear] that runs left and right on bottom of car behind engine. The rack is responsible for pushing tires left & right (via other parts that connect rack to wheels) as you turn steering wheel.
The steering wheel is connected to a shaft that goes out of the passenger compartment and into the engine compartment. At the end of that shaft there is a gear that is called a pinion gear. The pinion gear meshes with the steering rack [gear] that runs left and right on bottom of car behind engine. The rack is responsible for pushing tires left & right (via other parts that connect rack to wheels) as you turn steering wheel.
It screws directly to the end of the steering rack shaft under the bellows boot. Unclamp the boot and slide it off, you will see it. It takes a special tool to unscrew it off the rack, but you can use a big wrench if you can get it up in there.
You have not specified a particular make, model or year so I will attempt a generic guide to remove the rack and pinion from a vehicle. First move the boot, if there is one, that covers the connection between the steering column and the rack and pinion. Then remove the attaching bolt, slide the shaft back into the steering column or pull the column out of the way. Next raise the car as necessary and put on stands. Loosen the locking nuts from the tie rod end. Remove the nut holding the tier rod end to the steering arm and use a suitable tool to extract the tie rod end. Unscrew the tie rod end off of the inner tie rod end coming out of the rack and pinion. Count the number of turns so the tier rod end can be put on a replacement rack and pinion in the same relative position Save the lock nut for reuse. Do the same thing on both sides of the vehicle. If the vehicle has power steering remove the hoses, use a drip pan to catch the power steering fluid. Move the hoses out of the way. Next remove the bolts that hold the rack and pinion in place and raise the rack and pinion out of the brackets. Slide the rack and pinion out of the vehicle.