Re: 300u steering box again?

Posted by Janicholson on August 07, 2011 at 17:40:49 from (96.24.99.126):

In Reply to: 300u steering box again? posted by mike paulson on August 06, 2011 at 05:52:41:

There are three critical elements to the box (this assumes all Ujoints and connections in the shaft and supports are good):
1]the ball bearing in the worm gear can and does get sloppy, then it breaks. It is the only thrust absorber in the worm and shaft. It is a common bearing and must be replaced with the identical (commonly found,and not too costly) deep groove bearing. It is directly under the heavy cap at the top front of the box.
The second is wear in the upper bolster bushing just below the sector gear. This bushing, if worn, allows the sector to move forward and back, as well as away from the worm. This slop allows excess backlash in the worm to sector spacing. The third is worn surfaces on the worm and sector. These are not reparable unless extreeme money is spent on a buildup and regrind. Good used gears are available for much less. The use of JD cornhead grease, or Mobil 1 synthetic chassis lube, will provide great high pressure lubrication, and not leak out (recommended). Jim

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