Re: castle nut for rear drum break

Posted by HH56 On 2020/4/23 9:01:42

The procedure for replacing the axle is in the 46-50 service manual and is fairly straightforward. If you only took the hub off to do brakes probably not necessary but if you removed the axle to lube the bearings be sure to check the end play before you install the hubs and castle nut. You can make a tool to resemble the factory item out of scrap material and a long bolt. Once it is on the shaft check the clearance using an ordinary feeler gauge. After that measurement is confirmed then install the hubs on a DRY taper and tighten the nut to the specified torque. Try and sneak up on the torque to get into the given range so a slot in the nut will line up with the hole in the shaft so you can insert the cotter key.

In case you don't have the procedure here is an excerpt from the 46-50 service manual along with the torque specs from the 51-4 manual which uses the same rear axle assy.

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