This article will focus on installing a Locking Spindle Nut, which can be purchased here. At the end of this article, there will be a few bonus items.
Note: This article is not intended to replace your Training Manual / Owner Manual, please use this article to only supplement.
For a video of the content below, please watch this YouTube video.
You want to first start with draining the existing gear oil by removing the drain plug using a 5/16 Allen wrench. The drain plug is items number 4 within the first image below. You want to open this plug and allow it to completely drain.
Next you want to remove the steering arm cover, which will expose the existing spindle nut. To do this, you’ll need a 3/4 socket. Within the first image below, item number 5 is the steering arm cover, and items 6 and 7 are referencing the nuts to be removed in this step.
Note: You may have to remove the tie rod end / radius rod end from the steering arm cover. On trucks with CTIS, disconnecting of the arm may be required since it is almost impossible to get the cover back on without folding the lip of the seal.
Next you want to remove all of the old gasket from the steering arm cover and the geared hub. After which you want to dry off any of the old gear oil.
Next you want to bend back (away from the retaining nut) the locking tabs on your existing lock-washer. Then, using a retaining nut wrench / socket you want to remove the retaining nut, lock-washer, and keyed washer.
Next you want to start to install your Locking Spindle Nut. You want to take the notched washer and install that onto your spindle.
Next you want to install your grooved spindle nut per the instructions for your specific vehicle. In our case, using a 1 3/4 socket, we hand tightened the nut, then using a torque wrench we tightened it to 40 pounds per foot. After tightening, we spun the spindle 5 times clockwise and 5 times counterclockwise. Then, we loosened the nut, and tightened it back to 25 pounds per foot.
Next you want to install your locking retainer and and the snap ring. The locking retainer will have one of 6 position to which it may securely lock onto. To install the snap rings you will need large snap ring pliers. It is critical to make sure your locking retainer and snap ring are in place correctly.
Next you want to install your steering arm cover. To do that, we applied The Right Stuff One Minute Gasket around the steering arm cover. Then you want to place the steering arm cover in position and hand tighten the 4 bolts previously removed. Then using your torque wrench, you want to tighten all four bolts to the appropriate torque, in our case 65 pounds per foot.
Next you want to clean off your drain plug and reinstall it. After which you want to remove your fill plug and replenish your gear oil to the appropriate level. Once the gear oil has been filled you want to reinstall your fill plug and torque it to the appreciate setting. In our case, we used 80W-90 gear oil, and torqued the fill plug to 10 pounds per foot.
Since you have the geared hubs exposed, you might as well as check your bearing.
Since you have the tire off, you might as well as check to make sure your shafts are seated completely.
Since you have the tire off, you might as well as check all of your joints. In this case we’re going to look at the boll joints. If needed, such as in this case, refill the grease, or maybe consider changing the boll joints.
Thank you for reading and have a wonderful day!