In these cases, the most frequent culprit is a loose lug nut. I think it sounds like the pinion bearings are bad. Yes, a loose pinion nut would cause damage to the pinion bearings. Tightening up the pinion nut clamps all three items together (inner bearing, spacer, outer bearing). The lug nuts can get loose from jarring movements or just from not being tightened when work was done on the car. Jul 23, 2014 #10. I'm not doubting that it is too tight now, but it was probably too loose to begin with. The recall is expected to begin in November 2012. To set pinion bearing preload, use a holding tool to keep the pinion gear stationary. In your last 2 posts you keep wanting to know what was the the cause of your situation.It very well could have been a bearing gone bad as suggested but if I had to guess,I would say that when you attacked this problem the 1st time the pinion nut came off very easily as it was probably already loose.From doing rears for over 20 years I would have to say that the pinion nut coming loose … Then measure the pinion preload by turning the pinion nut with an inch-pound torque wrench. Owners may contact Chrysler at 1-800-247-9753. Then run the lower nuts up tight against the upper nuts to lock them all in place. Hold the upper nut to prevent rotation while you loosen the lower nut. Steering wheel shakes. In these cases, the most frequent culprit is a loose lug nut. It has been a few weeks now, and the truck seems to be suffering from the same symptoms; occationally some type of grinding/scratching noise under deceleration. Just the old ones looks so fine, and the pinion nut was loose, I discarded u-joints as the suspect. Symptoms were u-joint to begin with, too, it's what I started out looking at. While driving approximately 25 mph, the driveshaft dropped due to a loose pinion nut and the steering seized without warning. If the rear axle pinion nut loosens, the axle can lock up and cause a loss of vehicle control and/or a vehicle crash with little warning. If the pinion nut had been left loose when you picked up the car you would have noticed it right away. The bearings seem good and the seal is not leaking. A loose pinion nut could definitely cause premature wear on the pinion bearing as there would not be sufficient preload on the bearing to maintain proper contact with the race. Remedy: Chrysler will notify owners, and dealers will install a pinion nut retainer, free of charge. In these cases, the most frequent culprit is a loose lug nut. Tightening these up is simple and should fix the problem. If it doesn't come off in the first mile polaris says it should be ok. Good luck. I have come across other hard working diffs where the pinion had loosened off, but the symptoms had always been a sudden development of diff whine rather than no whine and severe vibration. I'm guessing that the pinion nut was backed off a little to begin with, and may have been part of the reason that the seal was leaking. When installing the carrier, the same adjusters or shims that are used to adjust the backlash are also used to set the carrier bearing preload. You mentioned previously the pinion seal had been leaking, most likely because the pinion was loose enough to wallow off-center. When a differential is set up this spacer is crushed by tightening the pinion nut; if the spacer is crushed too … Pinion gear . Notes: Since the pinion bearings use a crush sleeve there is not a specific torque rating for the pinion nut. Remove both front wheels. While tightening the pinion nut, the crush sleeve compresses to allow the bearings to preload slightly. The correct torque is once the pinion bearing has a specific pre-load on it. They have a larger footprint and go up nice and high. The shims under outer pinion bearing affect preload. And then you know what you have and using a 1 3/4" socket you can tell if its torqued to 250 ft-lbs or not. Raise and support the vehicle with approved jack stands. But I went and grabbed a pair of fresh Spicer 1330's and installed them. the pinion nut is 87-123 ft lbs don't go for 'either' end of that torque - what you have to achieve is the right pinion preload - which - since it's a crush tube, not a solid spacer, means you start with 87, put a spring guage/length of wire on the diff flange through a bolt hole, and check its resistance to turning. Refer to Drive Pinion Any damaged cause by this failure should be covered under the Recall. Repeat for all eight u-bolt ends (2 u-bolts or 4 ends on each side of car). I checked my rear pinion nut this weekend and found the nut loose. 351maverick full time Ebay seller/hustler/car killer. In a 9.25, the crush sleeve takes the place of the shims under the outer bearing. In my case, it was the nuts and dryness of the parts. With that in mind, when the bearings are damaged it puts metal into the entire rear differential. LOOSE U-BOLTS Cause REAR AXLE SHIFT - RA-104. Hey Folks Apparently there was a recall for 2005 Ram's build between Jan 28 2004 and Aug 3 2015. Could a loose pinion nut cause bad bearings? Diagnosing Ring and Pinion Gear, Differential, Axle and Driveline Noise. Tighten all of the upper nuts equally until they are all snug. That takes time. When the power steering rack and pinion wear out you may notice other symptoms such as: Loose steering. This condition is typically always diagnosed as a bad ring and Pinion gear. This kind of noise is almost never caused by bad ring and pinion gears. The lug nuts can get loose from jarring movements or just from not being tightened when work was done on the car. You need to have somebody dig into it and see how much other damage was done. This could also cause damage to any bearings in the differential. Another common problem with rack and pinion steering systems is loose steering. The pinion nut is torqued to a specific value found in the service manual. The shims under the inner pinion race are what affect the pinion depth. It can also happen if the nuts’ adjustments get displaced, or the joints and the gears get dry and forcing the driver to play more with the steering. Crack loose all the wheel lug nuts. The loose steering wheel of 2004 club Car DS may be due to worn out tie rods, breaking of the pin, or worn out rack and pinion gear. • A “whirring” noise while decelerating at any or all speeds is most likely caused by bad pinion bearings or loose pinion bearing preload. The rack and pinion assembly is an essential part of your steering. Then if its loose, or Nylock you can contact Pullerguy about borrowing a tool. When setting the pinion bearing preload on a crush sleeve design differential, it is always necessary to use a new crush sleeve every time the pinion nut is removed, or if the sleeve is over-crushed. If it were me I would maybe give your purchasing dealer a call and just get their opinion. Another common problem with rack and pinion steering systems is loose steering. When a solid spacer and pinion nut are used, shims control pinion bearing preload. My 12 bolt rearend in my 70 Camaro was leaking and discovered that the pinion nut was loose...way loose, could turn it with my fingers. The problem with political jokes is that they too often get elected. Here are a few typical symptoms and their possible cause: Whirring noise only while decelerating at any or all speeds is most likely caused by bad pinion bearings or loose pinion bearing preload, and almost never by bad ring and pinion gears. Tightening these up is simple and should fix the problem. Could the pinion nut cause this? Cause: Many causes, including worn differential carrier bearings or pinion bearings, broken or worn differential (spider) gears, a loose pinion nut… It says that the pinion bearing may come loose causing shaft to drop and in some cases may cause rear end to lock up. Since the pinion nut worked loose, you can safely assume the pinion bearings and races are toast. I took it to a buddy of mine, so he could properly set the preload etc on the rear end when tightening the nut. You torque the nut to specs, if the preload is wrong, you need to add/remove shims as needed from the outer pinion bearing. I'll … On the flip side, if the dfferenial was run low on fluid the bearings could have worn and cause a noise as well. As for whether or not this would be a covered item due to the recall, I do not have an answer for that. if the pinion nut it tightened too much, it will put too much preload on the pinion bearing and can cause a noise as well as if it is left too loose. What symptoms should I expect if the differential pinion nut is too loose? Tighten the pinion nut til you fart, and then go 1/8 turn more. And whether the pinion nut is staked or Nylock. I'm thinking I need to take off the nut, remove the pinion flange and seal, replace the crush sleeve, and retorque the flange. The vehicle was repaired.

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