Hello, I need to change the collapsible spacer of ring and pinion gear set (1989 Chevrolet S-10 Blazer) this spacer is located in the drive axle, so I need to know where to find it or buy it, thanks for your help.

I don't know but if there is one it shouldn't be too difficult to find.

Some axles have a torque figure and the bearing preload is adjusted by graduated spacers or shims but some axles use a single use collapsible spacer and the pinion nut must be tightened until the correct bearing preload is reached.
Carrying out work on that type of axle that doesn't require the axle to be dismantled such as replacing the pinion oil seal means the nut should be marked prior to removal and returned to that position - plus a gnat's wotsit, so the pinion bearing preload limit isn't exceeded.

I suggest you discover the type of axle you have before you begin work.

hello sir ...

RING AND PINION TOOTH CONTACT PATTERN.—The ring and pinion tooth contact pattern is used to double-check ring and pinion adjustment. To check the accuracy of your adjustments, coat the ring gear teeth with a thin coat of red lead, white grease, hydrated ferric oxide (yellow oxide or iron), or Prussian blue. Turn the ring gear one way and then the other to rub the teeth together, producing a contact pattern on the teeth. Carefully note the contact pattern that shows up on the teeth where the substance used has been wiped off. A good contact pattern is one located in the center of the gear teeth (fig. 5-21). Figure 5-21 shows several ring and pinion gear contact patterns. Study each and note the suggested correction for the faulty contact

More details are needed such as which seal and the type of axle fitted, eg., semi-floating or fully floating hubs and whether the pinion preload is set by graduated spacer or collapsible spacer?

button got pushed in, the front differential is now locked in, and your ring and pinion gears in the front are now turning when you drive. There must have been a problem with your frontend, or the driveshaft would not have been removed. I bet your front ring and pinion have damaged gears! Just curious, did you buy this blazer this way? Who removed the driveshaft?

the starter should bolt right up to the housing. thats the way mine did

The gear ratio will be stamped on the outside of the ring gear itself.You will need to change the ring and pinion gear. The side and spider gears should not have to be changed unless there is something wrong with them.Changing a rear end gear set takes a fair bit of knowledge and special tools.Make sure you have what you need before trying it. Good Luck.

If you are talking about the carrier (what the ring gear is bolted to) Both axles need to be removed before it comes out. However, You cannot take the assembly out of one housing and just bolt it into another...the ring and pinion gears are a matched set and even so need to be re-set using dial indicators and specific procedures. If you don't do that, at best it will be very noisy, at worst, it will fail in a very short time.
See if you can remove the unit as a "drum to drum" assembly and transfer the entire part rather than what you are doing. Chances are you have not damaged anything on the good one yet, as long as any side shims have not been lost or mixed up.

this means the ring and pinion gear are worn, but when u do the gears u will need to also replace all the bearings as well.

here is a diagram on how to get the front pinion seal out and it does mention how to get the axle loose. please do not forget to rate and comment about your experience with fixya today.

1. Before servicing the vehicle, please familiarize yourself with safety procedures.
   
2. Remove both half shafts.
   
3. Mark propeller shaft and pinion flange for installation reference.
   
4. Remove front propeller shaft.
   
5. Rotate pinion gear three to four times, to verify pinion rotates smoothly.
   
6. Record pinion flange rotating torque with an inch pound torque wrench for installation reference.
   
7. Hold flange with Holder 6719 and four bolts and washers.
   
8. Remove pinion nut.
   
9. Remove flange with Remover C-452.
   
10. Remove pinion seal with a pry tool.
    Removing the companion flange
    Measuring pinion rotating torque
    Pinion seal installer
    Tightening the pinion nut
    

To install:

1. Apply a light coating of gear lubricant on the lip of pinion seal.
   
2. Install seal with Installer C-3972-A and Handle C-4171.
   
3. Install pinion flange onto the pinion with Installer C-3718 and holder.
   
4. Hold pinion flange with Holder 6719A.
   
5. Install new pinion nut and tighten nut until there is zero bearing end-play.
   
   CAUTION Do not exceed the minimum tightening torque when installing the companion flange at this point. Damage to the collapsible spacer or bearings may result.
   
6. Tighten pinion nut to 271 Nm (200 ft. lbs.).
   
   CAUTION Never loosen pinion nut to decrease pinion bearing rotating torque and never exceed specified preload torque. If preload torque or rotating torque is exceeded a new collapsible spacer must be installed.
   
7. Record pinion flange rotating torque, with a torque wrench. Rotating torque should be equal to the reading recorded during removal plus an additional 0.56 Nm (5 inch lbs.).
   
8. If rotating torque is low, tighten pinion nut in 6.8 Nm (5 ft. lbs.) increments until rotating torque is achieved.
   
   CAUTION If maximum tightening torque is reached prior to reaching the required rotating torque, the collapsible spacer may have been damaged. Replace the collapsible spacer.
   
9. Install propeller shaft with reference marks aligned.
   
10. Install half shafts.
    

here is a diagram on how to replace the front pinion seal.
please do not forget to rate and comment about your experience with fixya.

1. Before servicing the vehicle, please familiarize yourself with safety procedures.
   
2. Remove both half shafts.
   
3. Mark propeller shaft and pinion flange for installation reference.
   
4. Remove front propeller shaft.
   
5. Rotate pinion gear three to four times, to verify pinion rotates smoothly.
   
6. Record pinion flange rotating torque with an inch pound torque wrench for installation reference.
   
7. Hold flange with Holder 6719 and four bolts and washers.
   
8. Remove pinion nut.
   
9. Remove flange with Remover C-452.
   
10. Remove pinion seal with a pry tool.
    Removing the companion flange
    Measuring pinion rotating torque
    Pinion seal installer
    Tightening the pinion nut
    

To install:

1. Apply a light coating of gear lubricant on the lip of pinion seal.
   
2. Install seal with Installer C-3972-A and Handle C-4171.
   
3. Install pinion flange onto the pinion with Installer C-3718 and holder.
   
4. Hold pinion flange with Holder 6719A.
   
5. Install new pinion nut and tighten nut until there is zero bearing end-play.
   
   CAUTION Do not exceed the minimum tightening torque when installing the companion flange at this point. Damage to the collapsible spacer or bearings may result.
   
6. Tighten pinion nut to 271 Nm (200 ft. lbs.).
   
   CAUTION Never loosen pinion nut to decrease pinion bearing rotating torque and never exceed specified preload torque. If preload torque or rotating torque is exceeded a new collapsible spacer must be installed.
   
7. Record pinion flange rotating torque, with a torque wrench. Rotating torque should be equal to the reading recorded during removal plus an additional 0.56 Nm (5 inch lbs.).
   
8. If rotating torque is low, tighten pinion nut in 6.8 Nm (5 ft. lbs.) increments until rotating torque is achieved.
   
   CAUTION If maximum tightening torque is reached prior to reaching the required rotating torque, the collapsible spacer may have been damaged. Replace the collapsible spacer.
   
9. Install propeller shaft with reference marks aligned.
   
10. Install half shafts.