Update - Noise from rear
#1
01-06-2011, 08:45 AM
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Update - Noise from rear
Pinion was very lose when I removed the drive shaft. Tried tighten it up but that resulted in more noise.
Question. Can the gears be resued if the carrier is properly disassembled and setup. I don't see any real damage to the gears...
Answer...called the shop....can't be reused according to them
Question. Can the gears be resued if the carrier is properly disassembled and setup. I don't see any real damage to the gears...
Answer...called the shop....can't be reused according to them
Last edited by Hvymtl; 01-06-2011 at 09:53 AM. Reason: update to question
#2
01-06-2011, 06:35 PM
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#3
01-08-2011, 08:24 AM
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The reason the old gears can't, or shouldn't, be used is that loose pinion bearings let the pinion walk in and out, which changes the ring and pinion setup. The gears are tested when manufactured to find the best, most quiet contact point. Then, they are lapped to further fine-tine that spot. Then you break the gears in... work harden them... in that position. Sometimes the gears get damaged in this scenario, chips, nicks, etc.
In a relatively short time, a loose pinion causes abnormal wear on the teeth. On repair and reassembly, you can end up with the same problem as you'd have if you set the gears up all wrong. It puts a bad pattern on them. Big noise. Now there's a chance they might be alright but you don't know until you try. If you were doing the work yourself, you could take that risk and either do it again later or live with a howl. You can tell a lot from a visual inspection with regards to damage, but you really can't tell if the gears will be noisy unless they are really munged up.
A shop has to look at it differently. They can't afford to experiment and likely have to do it a second time for free. They also can't say "heck with it" and give you back the truck with a noise, only to have you complain later. Even if they had presented you with the possibility of noise and the option to reuse the old gears, you might later "conveniently" forget all that and make a stink about it. Happens all the time. Not saying you are that kinda guy, but we all know someone who is. They just can't take the risk. They are a business after all. In the long run, a new R&P is in your best interests too.
In a relatively short time, a loose pinion causes abnormal wear on the teeth. On repair and reassembly, you can end up with the same problem as you'd have if you set the gears up all wrong. It puts a bad pattern on them. Big noise. Now there's a chance they might be alright but you don't know until you try. If you were doing the work yourself, you could take that risk and either do it again later or live with a howl. You can tell a lot from a visual inspection with regards to damage, but you really can't tell if the gears will be noisy unless they are really munged up.
A shop has to look at it differently. They can't afford to experiment and likely have to do it a second time for free. They also can't say "heck with it" and give you back the truck with a noise, only to have you complain later. Even if they had presented you with the possibility of noise and the option to reuse the old gears, you might later "conveniently" forget all that and make a stink about it. Happens all the time. Not saying you are that kinda guy, but we all know someone who is. They just can't take the risk. They are a business after all. In the long run, a new R&P is in your best interests too.
#4
01-09-2011, 08:34 PM
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The reason the old gears can't, or shouldn't, be used is that loose pinion bearings let the pinion walk in and out, which changes the ring and pinion setup. The gears are tested when manufactured to find the best, most quiet contact point. Then, they are lapped to further fine-tine that spot. Then you break the gears in... work harden them... in that position. Sometimes the gears get damaged in this scenario, chips, nicks, etc.
In a relatively short time, a loose pinion causes abnormal wear on the teeth. On repair and reassembly, you can end up with the same problem as you'd have if you set the gears up all wrong. It puts a bad pattern on them. Big noise. Now there's a chance they might be alright but you don't know until you try. If you were doing the work yourself, you could take that risk and either do it again later or live with a howl. You can tell a lot from a visual inspection with regards to damage, but you really can't tell if the gears will be noisy unless they are really munged up.
A shop has to look at it differently. They can't afford to experiment and likely have to do it a second time for free. They also can't say "heck with it" and give you back the truck with a noise, only to have you complain later. Even if they had presented you with the possibility of noise and the option to reuse the old gears, you might later "conveniently" forget all that and make a stink about it. Happens all the time. Not saying you are that kinda guy, but we all know someone who is. They just can't take the risk. They are a business after all. In the long run, a new R&P is in your best interests too.
In a relatively short time, a loose pinion causes abnormal wear on the teeth. On repair and reassembly, you can end up with the same problem as you'd have if you set the gears up all wrong. It puts a bad pattern on them. Big noise. Now there's a chance they might be alright but you don't know until you try. If you were doing the work yourself, you could take that risk and either do it again later or live with a howl. You can tell a lot from a visual inspection with regards to damage, but you really can't tell if the gears will be noisy unless they are really munged up.
A shop has to look at it differently. They can't afford to experiment and likely have to do it a second time for free. They also can't say "heck with it" and give you back the truck with a noise, only to have you complain later. Even if they had presented you with the possibility of noise and the option to reuse the old gears, you might later "conveniently" forget all that and make a stink about it. Happens all the time. Not saying you are that kinda guy, but we all know someone who is. They just can't take the risk. They are a business after all. In the long run, a new R&P is in your best interests too.