Differential ring gear now needed & questions

I found out today the knocking noise in my differential and was two teeth chipped off the ring gear. My manual says the ring gear is attached to the "center wheel" with 12 rivets. If a home mechanic buys a ring gear can the rivets be easily popped out and new ones put in? I wonder what caused these chipped teeth to happen? We have some steep roads where we often have to stop to let livestock pass and maybe the jerk of continuing uphill caused this? I was also using the differential brakes a lot this past spring with chains on the tires. I found a used ringer already on a center wheel with a matched pinion.
 
Tractor model would help,some have
retrofit bolt kits others need to be
riveted due to clearance issues
 
normal use does not break them, "ect stopping on hill" most times when I seen them they were broken by picking the back end up off the ground while using the loader bucket and getting the wheels spinning and then dropping the wheels to the ground, this took out the spider gears much of the time first but would take out the ring gear and pinion as well in time,, who knows what abuse it had before you got it, I seen this many times when we sold 580CK's in the oil field if there was a way to tear something up they found it, I have also seen "trash" run through gears as well, also seen major damage when the driver would step on the diff lock with one wheel spinning, you stated using the brakes ,, if you were locking up one wheel to make the other spin you can cause stresses as well but if you were just putting enough braking to one to keep the other turning that should not have affected it, I would guess it was a old injury that finally let go unless you can think of some time last winter when you really make her "talk" and broke it,, either way its fixable,, again when I seen most of these failures it was from having "mass" spinning and then it was Stopped causing a shock wave to back feed and damage the weakest link at the time
cnt
 
Thank you for the info fellows. My machine is a 1961 Case W3 or very similar to the Case 530. It has the model 42 loader and model 42 backhoe attached to it. I took the hoe and loader off so I could work remove the right hand rear axle housing and find the source of the knocking. The right hand axle housing was seperating from diff case on the bottom about a 1/4" max putting a tilt on the large final drive gear so I expect that was not too good for differential side gear. You can definitely see the wear between the large final drive gears and differential side gears. I will helicoil the 5/8" bolt holes in diff case and rebuild stabilizers so axle tube does not get stressed again. The harder part is re & re'ing the pinion and crown gear. My service manual outlines how to do it and I have all the tools to do it. I've never set up a crown and pinion and feeling overwhelmed and wondering "can I do it properly?".

The part #A38402 for the crown gear and pinion appears to be same for a few models of Case tractors on the internet yet need confirmation on that.

I'm at a crossroad. Do I buy a good used parts or try to locate a donor tractor.

My neighbor "Dale", in my area has a Case 530. A couple gears in his differential case were damaged and he found a Case tractor in good condition. Dale said the donor tractor was "smaller" yet he had a mechanic remove his rear differential with wheels attached and install the rear differential from the other machine. Possibly he used the differential case of a 430 on the front half of his 530? I'm going to phone the mechanic that did that job and see if the defective back half has different gears damaged as compared to mine.

I figure I will measure the slop or clearances of my differential before I take it all apart. My manual says to split tractor drain torque tube, drain differential case, remove main shaft etc etc.

Any more suggestions\advice much appreciated.K
 
The only severe wear and tear I have done is lowering the backhoe stabilizers too quickly rear wheel brakes on. Or using the differential brakes both at the same time because my foot slid onto both brake pedals. My tractor has the case-o-matic so you woulth think torque converter would slip before something broke.
 
Hey fellows. If I re-use my old pinion and put in a good used crown gear assembly and I set it up best I can will it perform ok? I stay in low range all the time, 1st through 3rd gears, on our property.
 
Where are you located?
I have the rear half of a 530ck (trans and rear axle) that is in my way in the shed. if it would work for you I would love to get rid of it. I'm in Western Wisconsin.

Lee
 
(quoted from post at 12:52:50 06/27/17) Where are you located?
I have the rear half of a 530ck (trans and rear axle) that is in my way in the shed. if it would work for you I would love to get rid of it. I'm in Western Wisconsin.

Lee


Unfortunately I am in British Columbia or I would.
 
I have received a good used crown gear\pinion set-up for JC. My manual stated to remove transmission mainshaft before removing pinion. The mainshaft was stubborn to remove yet its out now. My machine is the case tractor with dual range and mechanical shuttle. I observed the main shaft has a bronze pushing in rear most end so am suspecting my tractor had a used main shaft put in it at one time. I have discovered two snap rings were missing on either side of the low range components. The thrust collar behind the low range gear was mashing its way into the two seals in front of the bearing. I'm also thinking my mainshaft was possibly for a different set-up because their is a rounded shoulder wear the inner snap ring would have been. Also you can see in the phto the splined starts to slope at rear. Possibly the snap rings were left out because it was a different mainshaft?? Can anyone clarify?
I have received a good used crown gear\pinion set-up for JC. My manual stated to remove transmission mainshaft before removing pinion. The mainshaft was stubborn to remove yet its out now. My machine is the case tractor with dual range and mechanical shuttle. I observed the main shaft has a bronze pushing in rear most end so am suspecting my tractor had a used main shaft put in it at one time. I have discovered two snap rings were missing on either side of the low range components. The thrust collar behind the low range gear was mashing its way into the two seals in front of the bearing. I'm also thinking my mainshaft was possibly for a different set-up because their is a rounded shoulder wear the inner snap ring would have been. Also you can see in the phto the splined starts to slope at rear. Possibly the snap rings were left out because it was a different mainshaft?? Can anyone clarify?

 
I discovered re-reading in my service manual I have the snap ring from the front of maim shaft. Sorry for copying my paragraph. I received crown and pinion from JC too. Looking at the thrust collar that goes behind the low range gear, the small roll pin has been sheared off too.
 
I finally remember there was a weird two piece ring in there where splines taper down. The ring was two halves held together with an allen bolt. I've also learned from JC, this definitely is not "stock" so I will install another main shaft in stock condition using the proper parts.

Two questions I have for any fellows having done work on Case crown and pinions, my Case service manual does not talk about using any type of shims for pinion depth. Was it normal in the 1960's Case tractors had a factory set pinion depth?

Second question, for slow speeds that some old tractors are used, anyone ever used umatched used pinion bearings and races? I would think if you have your tractor torn apart to that extent make sure your pinion bearings\races match or spend the money to put in new bearings and races? The good used pinion I received has a good used bearing already pressed on and the race in my tractor is still shiny. These may be odd questions to ask yet just questions on my mind...
 
Well I have made some progress and hoping JC can provide me with a better used transmission main shaft. Will post more later.
 
This month has been a success. JC was able to get me a good used transmission main shaft and other items I needed. Its been a real pleasure dealing with Jean Claude Marleau. The rounded shoulder on my main shaft was definitely not good and the one I received from JC has a square shoulder to hold a snap ring in place. My plan is to get tractor all back together by end of September.
 

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