Driveshaft Spline

[sneds]

Replace or run it?

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[Proformance1]

Hard to tell without a measurement. Looks about 30% worn. I have seen failures above 60% Luckilly your shaft engagement looks great.

Questions:

OEM shaft
Shaft Run Out amount
How was allignment
Mid shaft condition
Midshaft shimmed to firewall
Pump bearing condition
Midshaft bearing condition

 

[sneds]

Brian, this is out of my blaster. I have it pulled apart right now getting it reinforced and I'm generally going over all the components (as I do every winter).

OEM shaft - looks aftermarket (no taper)

Shaft Run Out amount - OEM drive train including dowl pins so I assume was ok.

How was allignment - good as far as I know. I now have the CF tool so I'll be using it when I put it back in.

Mid shaft condition - good

Midshaft shimmed to firewall - yes OEM shim

Pump bearing condition - great condition

Midshaft bearing condition - great condition



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[jetx]

Blaster shafts don't have the taper like a sj

 

[sneds]

Good to know, thanks Rob

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[Proformance1]

If you have the shaft out of the pump throw it in some V blocks, put a dial indicator on it and see how bent it is to tell shaft run out. You can also do in a lathe. All that power your making may have bent the shaft causing some wobble and wear. If you have DS wear, you may have internal mid shaft wear. Clean and inspect with a light and magnification if necessary to determine condition of internal splines in midshaft.

 

[augustaf]

That shaft is still useable- looks dry unless you cleaned it. Be sure to replace the 2 o rings inside the midshaft so the grease does not wash out right away.

 

[snowxr]

Looks fine. 20 years of use, and that's all it has worn..... Run it.

 

[kevbo]

Thats not too bad. Clean all the crap out of the mid shaft, the splines, and shaft tunnel. Make it perfectly clean and reassemble with fresh grease. ANY grit will take out the splines.

 

[badvinny]

Don't forget to look at the mating splines in the midshaft for wear also!

 

[sneds]

I'll check it out. Thanks. Anyone have a picture of what a good midshaft is suppose to look like?

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[augustaf]

These are pics of a new oem shaft, sorry my cheap camera can't focus on the inside of a bore.

 

[sneds]

Here's mine...

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[Yami-Rider]

Not much left of that midshaft

 

[augustaf]

sneds, your midshaft is in sad shape. However, since it's over $250 to replace midshaft and driveshaft, you might consider using the old until they strip (that will happen suddenly and without warning- so don't get too far from shore). It is absolutely mandatory that you replace the two "o" rings in the midshaft, otherwise the grease will (!) wash out in minutes and the shaft will strip soon thereafter. I buy those o rings in bulk (Buna N) and could send you a couple.

 

[badvinny]

Here's mine...

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Nailed it! Lol, sorry!

 

[sneds]

Yup, it's toast

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[Proformance1]

Found your issue. Always check

 

[sneds]

Thanks guys

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[Th3g3rm4n4t0r]

If you can find parts i can press it all together for you locally @sneds

Can also get parts too... lemee know