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Old 06-30-2012, 11:59 PM   #1
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Help - strange castle nut/pin

I needed to put new tires on our '04 261T before our long trip in a few weeks. Just bought it last year, and hadn't checked the brakes yet, so thought I'd do both at the same time. All I did last year was pull the rubber grease covers and lube thru the zircs.

Today, when I removed the wheel and grease cap, I found a castle nut like this:
slotted trailer axle spindle nut for axle spindle FASN100 165686

It had a cotter pin going thru the spindle, offset/under the zirc, and took forever for me to remove. It had to go thru sort of curved. Can not get the new cotter pin back thru, and I'm thinking someone put the wrong combination of parts here. Is there some other combination I should have?
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thebrakeman ('70), DW ('71), DD ('99), DD ('01), DD ('05)
2004 Surveyor SV261T (UltraLite Bunkhouse Hybrid)
2006 Mercury Mountaineer V8 AWD Premier
Equal-i-zer WDH (10k), Prodigy Brake Controller
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Old 07-01-2012, 02:36 AM   #2
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What you have isn't unusual. To have zerks (EZ-Lube, rifle-drilled type axles) you must have the cotter pin hole offset from the axle center-line.

Funny, however, is that I DON'T have EZ_Lube types, and one of my axles is drilled straight-across, and the other is drilled off-set like yours is. Both have the same castellated nut similar to yours.

I had the same consternation with a "curved" cotter pin.

Pop
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Old 07-01-2012, 02:02 PM   #3
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I think I found the solution.
I had only pull off the grease caps from curbside wheels. Both of these had those odd castle nuts. They are 6-sided, but with 10 slots. Very strange. Having more slots than sides, the slots have to be very narrow, which does not allow a straight path for the cotter pin, even thought he hole in the spindle is straight.

But today I pulled off the caps from the 2 roadside wheels. Sure enough, they the more typical 6-sided castle nut with only 6 slots (1 slot per falt). This allows the slots to be much larger, providing a straight path for the cotter pin. I tried removing 1 pin, and it came out and back in quite smoothly. So tomorrow, I will be picking up 2 new castle nuts with only 6 slots.
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thebrakeman ('70), DW ('71), DD ('99), DD ('01), DD ('05)
2004 Surveyor SV261T (UltraLite Bunkhouse Hybrid)
2006 Mercury Mountaineer V8 AWD Premier
Equal-i-zer WDH (10k), Prodigy Brake Controller
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