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i never thought about it till now....are there any zerks under the truck to be lubed at oil changes??? if so does anyone know approx how many and what kind of grease do you all recommend? thanx
Steering linkage is the only zerks.. Everything else must be done by hand which is easy..
4WD Hub
Squeeze snap ring and remove.
Pull Locking Hub out
Clean Axle Shaft Splines and Hub Splines
Apply LIGHT LIGHT LIGHT coat of Synthetic Grease (do not apply a ton, too much grease will damage the Hubs)
Rear Axle Slip Joint
Remove Axle from U-Joint clamps (be sure to mark orientation with chalk, paint)
Gently use needle nose pliers and spread the metal clamps (if done properly you can reuse them, no need for Zip Ties)
Remove Axle side of drive shaft slightly from the slip joint. Use a punch tool and make a small mark to note alignment. Use the blue Teflon Shaft as a point and the Metal Housing of the Transmission side Shaft to mark.
Clean Teflon Shaft and inside of Slip Joint on Transmission side Axle
Apply a nice amount of Grease (Schaffers, think thats how it's spelled, makes some DAMN GOOD lube. I used their Red Tube and so far my shaft hasn't made a single knock. By now the Ford stuff would be gone and I'd have the clunk).
Align shaft into Slip Joint and slide back in. If using Schaffers you will have a lot of resistence.. Just work it in and out (quit thinking dirty!) to get the lube in every spline.
Slide rubber boot back over Slip joint and apply the metal clamp. You will see two hooks on the end of it, slide it onto those hooks and compress the clamp point you spreaded in Step 1.
That's about it as far as oil interval maintenance. Spread it out over X number of miles you seem fit. Other points to lube are the Caliper Slide Pins, and the Tie Rod/Drag Link ends.
There are very few grease zerks on the SD period.. Only ones I physically know of are on the Steering Linkage.. Everything else is pull a plug or disconnect and lube.. Or they are non-greasable parts.