Bent oil pump shaft?

chadzeilenga

chadzeilenga

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Joined
Oct 2, 2009
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72
Location
Crete, IL
I went to look over the sled before snow started. Noticed belly pan full of 1/2 tank of oil. Just had the whole autolube system out a year ago last fall. All gone thru and rebuilt, new lines, seals gaskets etc. ride about 300mi last season without issue.
no leaks from the lines/tank. The pump housing was loose to the drivegear case...

[emoji90]

Loosened up engine enough to remove pump. Decent amount of oil drained from the drive gear cavity...[emoji16]

Pump looks fine, but the worm shaft that goes from the drive gear to the pump is majorly bent. Any chance this could happen while riding last season or did I put a bent worm shaft in when I rebuilt?

I figure I would have seen that while assembling, but maybe not. I've got a spare (true) one, just need to round up the seals/gaskets and reassemble with some loctite.



C. Zeilenga
 
Last edited:
Hi All, I'm putting the oil pump back together. Do I need to oil or grease the worm shaft on the pump side? I figured it would get oiled during operation. I have the drive gear side loaded up with marine grease.

Also, any tips/tricks for bleeding oil pump system? I elevate my full oil tank and that helps. Do I need to remove bleed screw or just turn far out?


C. Zeilenga
 
Got it all back together. Pump bled and engine remounted.
I noticed some fuzz on inside of carb that didn't belong there...sure enough bottom of air box packed with a nest and two baby mice carcasses dried to the bottom.
I got it all back together and it wouldn't idle well, kept dropping down to ~600 RPM. I bumped up idle screw and it was ok, but now I'm afraid that some nest got past carb and is stuck in the reeds or something. Any easy way to tell?


C. Zeilenga
 
Just pull the carbs and take a look inside the reeds. If you haven't cleaned the carbs go ahead and clean them while they're out.
 
I found a piece of chewed plastic from mice in air box made its way into one of the ports at bottom of carb. All good now


C. Zeilenga
 
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