boxboy Posted March 22, 2011 Report Share Posted March 22, 2011 I am working on the 520. I have grease melting out of the hub, so I am guessing it is time to do the bearings. I have all the parts, and even an extra set of hubs from a 521. My assumption is that it doesn't make a bit of difference which hub goes on which side. They are not marked, and I really have no idea which one went on which side originally. I am also assuming they will work on the 520 spindle. Can someone confirm my assumptions? Quote Link to comment
raggmann Posted March 23, 2011 Report Share Posted March 23, 2011 Side to side does not matter. As far as 520/521 interchangeability, maybe have a look here: http://www.olddatsuns.com/data/Datsun_Pick-Up_USA_&_Canada_Parts_Catalog_Model_520_521_Series.pdf Quote Link to comment
boxboy Posted March 23, 2011 Author Report Share Posted March 23, 2011 According to CarPartsmanual they are the same. I need to get the replacements good and clean and free of foreign objects, stuff them with grease and bang in the new races. Thanks for the response Raggmann Quote Link to comment
banzai510(hainz) Posted March 23, 2011 Report Share Posted March 23, 2011 does it fell ruff? otherwise repack it and run it. Quote Link to comment
datzenmike Posted March 23, 2011 Report Share Posted March 23, 2011 521 hubs after April '71 have a different number and outer bearing but may still fit the older spindle. Quote Link to comment
boxboy Posted March 23, 2011 Author Report Share Posted March 23, 2011 does it fell ruff? otherwise repack it and run it. Done that once. Now the bearings aren't turning. I do have an older bearing that came out of another hub. But if I am going to do it, I want to do it right. Quote Link to comment
boxboy Posted March 24, 2011 Author Report Share Posted March 24, 2011 Okay, so I know how to pack a bearing, but I have never started from scratch before. So to add a dumb question to the first, how much grease needs to be in the hub cavity between the bearings? I have heard the too much creates too much heat. Too little, not enough lube. Recommendations? Quote Link to comment
raggmann Posted March 25, 2011 Report Share Posted March 25, 2011 Personally I basically put in a skim coat, approx 1/4" thick (if that) all the way around the inside of the hub Quote Link to comment
boxboy Posted March 25, 2011 Author Report Share Posted March 25, 2011 Done. New, smooth rolling bearings. Haven't driven it yet, so I won't crow too loud. But they sure roll nice when I spin the wheel. Now if my fuel pump holds oil I am back in business and hopefully nothing will need attention for a little bit. I have lots of honey do's I've been neglecting. I have overspent my Datsun capital with the wife.:mellow: Quote Link to comment
DanielC Posted March 25, 2011 Report Share Posted March 25, 2011 Here is a picture of the front hib, from the factory service manual. The manual says to also apply the bearing grease to the spindle, and all parts. Also fill all the spaces in between the rollers of the of the bearings with grease. Tighten the spindle nut to 23.1 to 24.6 foot pounds of torque. Turn the several times in both directions. Recheck the torque on the spindle nut. If it is loose, tighten it again, and turn the hub some more. Keep doing this until the torque on the nut holds. Back off the spindle nut 40 to 70 degrees. The hub should spin with a new bearing and seal with 13 inch pounds or less, or with a used bearing and seal with 6 inch pounds or less. If you do not have a inch pound torque wrench, the manual says the hub should spin with a 4.6 pound weight at the hub bolt, (lug nut bolt), new parts, or a 2.2 pound weight, used parts, or less. Quote Link to comment
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