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More AC916 questions for Dave


Mike

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Dave you mentioned about testing the bevel gear box for excessive play. Do you mean side play or actual turning play. I have checked this and there is no side play however turning play is a little more than a half inch. Also what does the bevel gear box do? How does it work? Thanks for all the help. Email me if you don't mind a few more questions. Thanks, Mike
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The box contains two shafts: input and output to which two gears are attached: drive and driven. Power is essentially transmitted straight from the engine to the drive shaft to the transfer (or bevel gear) box which then drives a cross shaft for powering the transmission on the right side and the mower PTO on the left side. The gears inside the box are made of brass and what you feeling is gear wear. New gears will have hardly any noticeable back lash. 1/2" movement indicates a bit of wear but it may still last for a while yet. For "normal" use the gears may need replacement once in a tractors lifetime.
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I don't know Dave. I think mine are brass in my B-112.
They're at least brass colored.

Mike, here's another possibility.
I just disassembled my bevel gear box because I could
rotate the pulley 90 degrees before engaging anything.
As it turns out, my bevel gear box is in great shape,
but the output shaft is destroyed at the keyway that
engages the transmission drive pulley. This is on a
vari-speed system, but the idea would also apply to a
straight 3 speed. Each of the two gears in the bevel
gear box is keyed to the shaft as well, so any one of
these 3 keyways or keys or 2 gears could be the
culprit. If your pulley seems to be firmly attached to
the shaft, then your problem is obviously inside the
gearbox, and you really won't know the problem until
you take it apart, which is quite a bit of work.

Good luck,
Greg
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They might be brass colored but BELIEVE me if they were made out of brass or even bronze They wouldn't last in there a month!If I've had 1 of these boxes apart I've had 50 and all the ones I worked on had STEEL gears in them.Everyone knows the gears are made from re-cycled Toyotas so they gotta be tough![sorry Toyota owners!] dlc
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I finally GOTCHA! The bevel gears are NOT made of brass,you should know that! They are made of steel,at least the ones I see in NY are!If there is 1/2" gear play that's way too much and the box will need attention real soon,if it dosen't sound like a "cement mixer" when running already!Hey JN, didja sell that Anniversary Sov. yet? I've got a nice replacement for it on the stand if you did! dlc
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DLC,

No offense taken. Recycled Toyota steel is probably the
only material fit for an A-C or Simplicity tractor. We
would want lesser material in our toys would we??

Roy
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Oh Oh - I think you did catch me :) Would you beleive that was a test to see if any one would notice? If not would you beleive that the originals were origianlly made of brass and later changed to steel? If not would you beleive ..........anything else?
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