Hello,
I'm replacing the seals in my NP200 and I'm wondering what the best way is to set the bearing preload.
Thanks,
MIkel
Hello,
I'm replacing the seals in my NP200 and I'm wondering what the best way is to set the bearing preload.
Thanks,
MIkel
The manual lists some of the yokes seperately but the procedure for all is the same, as follows:
(5) Adjust pre-load on bearings (fig 12-7) as follows:
(6) Place bearing retainer on a suitable stand or in the open jaw of a vise, in a vertical position, so that the output shaft is free to rotate.
(7) Turn shaft with a torque wrench until bearings roll smoothly.
(8) Check pre-load on bearings with the wrench in motion. If the pre-load on bearings is not within 15 to 30 inch-pounds limit, (without oil seal) add or remove shims, as required, to obtain correct preload.
NOTE
Correct bearing pre-load is very important. It will assure quiet operation, prevent oil seal leakage and provide proper bearing life.
Figure 12-7. Checking pre-load on output shaft bearings.
1 Torque wrench
2 Companion yoke
3 Bearing retainer
4 Vise
Thank you Jon. I'm replacing one of the yokes with a 1350 one, so the shim depth will be different. Where do I get shims from?
Dont know on that bt they might be like some of the other parts in the NP200...they might interchange with the NP205 ones...
Hopefully someone who knows will be along soon...
If you are just changing the yoke, there shouldn't be any need to touch the shims, unless you are just doing it as a matter of course. If you are also replacing the bearings, then you will have to reset the bearing preload.
The shims are located between the bearings on top of the spacer in there on the shaft. When I did my transfer case, I used pinion shims from a Dana 44 I had left over from a previous job. They were the same I.D. but I had to trim the O.D. slightly.
"Free advice is worth what you pay for it."™
Thank you guys.
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