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Hydraulic fluid change out and PTO shaft replacement

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Joined: 27 Jul 2006
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PostPosted: Mon Jul 02, 2007 5:33 am    Post subject: Hydraulic fluid change out and PTO shaft replacement Reply to specific post Reply with quote

I finally got around yesterday to draining the tranny/hyrdraulic fluid on my 52 8N. It was a bit water tainted due to a leaky shifter boot. Was an ugly golden rusty color. I first drained about a gallon of fluid from the diffy plug and added a gallon of diesel, then drove it for a while and ran the lift up and down a few times. Then I started pulling the drain plugs, back to front. The diffy had a small sludge plug that I pulled out with my little finger allowing the fluid to pour strongly out. Under the pump I could feel just a little bit of dirt but not much. The tranny seemed very clean.
I screwed the drain plugs back in and poured in about four gallons of diesel and let that sit for a while.
I pulled the dipstick/ inspection plate off and everything looked very, very clean. I could feel a little bit of loose dirt in the bottom but absolutely no sludge build up. I swished the dirt up with my hand, then drained everything again. The fuel came out pretty dirty but not a lot of big chunks. I let the fuel settle a while then poured it back in, through a screened funnel. Pulled the plugs and drained it again. Repeated this three more times. Was not getting any solids to speak of after all this. I let it continue to drain over night.

Then I pulled the PTO shaft for replacement. After removing the four bolts, I held my breath, hoping that it would slide right out and not be stuck in there indicating a bent shaft. Got lucky! It slid right out.
The new one slid right in and the bolt plate was flush with the rear of the tractor so I am assuming that it slid right into place. Can it be that easy?

I tried to remove the ORC from the old shaft. It had one grease fitting. On the opposite side it looked like there is a fairly good sized slotted screw head but I could not budge it with a screwdriver. Then I thought it might be part of the roll pin, so I tried driving the roll pin out. It would not move. In the process I broke off my "punch", which was a hardened steel drill bit. I don't know how I'm going to get that out of there. I'll probably just buy another ORC.

The old PTO shaft looks fine. It just needs new seals. I opted to put a new one in instead. If anyone wants a good used PTO shaft, make me an offer. Just be advised about the attached ORC. No extra charge for the broken drill bit.
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Tractor Guru

Joined: 10 Aug 1998
Posts: 10925

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PostPosted: Mon Jul 02, 2007 10:40 am    Post subject: Re: Hydraulic fluid change out and PTO shaft replacement Reply to specific post Reply with quote

You got to take the plug out and the fitting. That pin has got to go somewhere! After you get the plug out try drivint it out the other way from the end you buggered up.

Try attaching a pair of vice grip pliers to the screwdriver so you can turn the plug easier.

It is a 1/8" pipe plug. Same thread as the grease fitting.

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don t-9n18179

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PostPosted: Tue Jul 03, 2007 1:30 am    Post subject: Re: Hydraulic fluid change out and PTO shaft replacement Reply to specific post Reply with quote

Maybe you can file down the sides of the slotted screw to use a wrench?

HTH....good luck.....don t. .....
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