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8N front pump drive

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MICHEAL

07-15-1999 06:03:40

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Hi, I have a front-pump on my 48 8N. I have a crank pully with 4- 1/4" threaded holes in it. My drive shaft adapter has 4 'legs' on it and a 5/8" left-hand center hole. When this was put together, it had 2 pcs of 1/4" belting drilled with 8 holes-four to hold the belting to the pully and four for the drive adapter to slide into. I ripped this belting apart last night. Can anyone tell me if this is the way it is suppose to go or does this adapter bolt solid to the crank pully or do i need some other piece to go in between the pully and the drive adapter? Please help if anyone knows how this was suppose to go together.

thank you as always for your help.
micheal

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Nolan

07-15-1999 10:36:51

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Re: 8N front pump drive in reply to MICHEAL, 07-15-1999 06:03:40

Sounds a lot like mine. I've a Wagner. Mine fits up with the four legs going directly into the crankshaft pulley. The crankshaft pulley has no threads in its holes though.

The rubber webbing is there for misalignment. It acts like a u-joint. Now mine has it mounted up by the pump, not at the engine pulley. Mine is done like a cars steering shaft. Ie, one shaft ends in a flange with two pins that stick into the rubber disc at say 12 and 6 o'clock. The other shaft on the oposite end of the rubber disk also has a flange that sticks its two pins in at 3 and 9 o'clock.

It's more normal to have this u-joint effect located at the fixed end, as in the pump end, then down the shaft. Having it up by the pump better protects the pump bearings from the side loads of misalignment and bent shafts.

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