Torques of ring gear & pinion - Cars & Trucks

If you have an 8.6" ring you should have a 10 bolt axel. With this axel you don't torque the pinion nut. This style axel has a crush collar. Down below I forwarded the preload torque specs. If you do have a 12 bolt axel, the ring gear does get torqued but the ring gear will not be 8.6" Please write back if you need anything thing else. Pinion Preload New: 14 to 19 in-lbs Pinion Preload Reused: 6 to 8 in-lbs

The ring gear bolts should be torqued to 65 ft. lbs.

you have to disassemble the differential to remove the pinion gear to replace the crush sleave. to remove the pinion nut remove driveshaft then using proper size socket with an air gun remove nut then push out pinion gear from differential. to assemble check clearances of side bearings and pinion/ring gear contact clearances, and proper torque for pinion nut.

if you have never done one its best to take to dealer because you have to remove drive shaft and then rear pinion nut and remove seal the tricky part is you have to buy new crush sleeve and thats what sets your pinon depth so that pinion rides in middle of ring gear its called setting your pinion depth if over tighten will hurt bearings and or ring gear and if under tighten will be verry noisey and cause ring and pinion failure best to let someone with special tools and knows what thier doing i use to do all chevy diff at my old dealer your use inch torque wrench to measure the drag on pinion nut and then use 1/2 inch impack to tighten the nut people freak because impack is rated at 600 ft pds but your using inch torque wrench to check drag not how tight nut is good luck

Here is all the specs

Assembly Specifications:

Cover Bolt Ft. Lbs. 28

Pinion Brg. Preload In. Lbs 16-29

Pinion Brg. Preload In. Lbs 8-14 Used

Ring Gear Backlash .008"-.015"

Ring Gear Bolt to carrier Ft. Lbs. 100-120

Side Brg. Caps Ft. Lbs. 70-85

The pinion nut does not have a torque spec. as in how tight the nut is. The amount of torque is measured in bearing preload. You will need a "torque to rotate" torque wrench. If you are using new bearings the torque spec. is 15-25 in. lbs. If you are using your old bearings the torque spec. is 10-20 in. lbs to rotate. To measure this you will need to tighten the nut in small increments then use the torque to rotate wrench to turn the pinion without the carrier/ ring gear installed. Repeat until desired torque is reached.

There is no torque specs,this nut has to be tightened back like it was ,the best thing to do,was,to late now,is to use a torque wrench to remove the nut,and remember the torque,and when replacing it,torque it back to that spec,the reason being,there is a crush sleeve between the front pion bearing ,and the rear pinion bearing,and it has to be crushed to a certain amount,to aquire deepness into the ring gear,anyway just give it about 25 lbs torque,any more the crush sleeve will crush even more and the deepness of the pinion will be too much.

Ring gear bolts should be tightened to 71 ftlbs

Drive Pinion Nut
7.5" Ring Gear 80-174 (109-235nm)
8.0" Ring Gear 145-253 (197-343nm)

Ring Gear Bolts

Models 181, 186 & 194 Axle 70-90 (95-122)
Model 198 Axle 95-105 (129-142)
Models 216 & 226 Axle 80 (108)
8 1/4" Ring Gear (Cherokee) 70 (95)

Differential bearing caps 70-85 ft lb
Ring gear bolts 70-85 ft lb
Pinion bearing preload if using original bearings 8-14 lb-in, if installing new bearings 16-28 lb-in