Taking care of the chassis of your Jeep Wrangler is important to maximize the life span of your front end steering and suspension components. If you do your own oil changes or bring it one of those quick-lube places, it wouldn't hurt to lube the chassis or make sure the oil-lube tech did afterward. A quality synthetic grease is best for a Jeep Wrangler, but may be a little messy.
Remove the top of the grease gun by unscrewing it. Pull down on the spring loaded plunger handle at the bottom of the grease gun and lock it on the angled slot.
Remove the plastic lid from the tube of grease. Place the open end of the tube down into the chamber of the grease gun.
Remove the flip top lid of the grease tube (should now be facing at the top of the grease gun) and discard. Replace the grease gun cover by screwing it on by hand tightly. Unlock the spring loaded plunger and allow push it into the chamber of the gun. Pump the trigger of the grease gun until it primes and grease come out of the tip.
Crawl under the driver's side of the Jeep Wrangler and locate the upper ball joint zerk fitting (top center of the inside tire sidewall).
Plug the tip of the grease gun onto the zerk fitting and pump the handle of the grease gun. Pump a couple times and see if any grease is going in. Applying pressure to the tip onto the zerk fittings helps prevent grease from just covering the fitting and not penetrating into the fitting to properly lubricate.
Locate the steering tie rod end fitting (below the ball joint and towards the front of the Wrangler). Grease this fitting until the rubber cup expands and just a little grease spills out. Wipe any excess grease with the rag.
Crawl over to the right side and repeat the same steps on the right upper ball joint and the right steering tie rod end.
Follow the steering tie rod end bar back towards the middle about a foot or so to locate and grease the tie rod/drag link connection zerk fitting.
Locate the drag link/pitman arm fitting by following the track bar behind the tie rod end bar over toward the driver side and grease that. Below that fitting is the last zerk fitting on the track bar/frame joint connection.
