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Re: 646 Lovejoy replacement.

Posted: Sat Dec 07, 2024 3:53 am
by Eugen
Spike188 wrote: ↑Fri Dec 06, 2024 10:49 am I hate to admit giving into the idea of farming this job out. 27f/-5c, windy and snow flurries. 20241206_102503.jpg It will get winchhed onto a trailer and taken to a freinds shop for repair. I may or may not have time to help. At least good record keeping in June of 2017 indicated the sizing on a replacement pump installed allows for picking up the Lovejoy replacement before teardown. It can be a Saturday job that way.
Oh now, you're reminding me of all the good times I used to have wrenching in freezing weather! :D

@Spike188 , get a new spider too, while you're at it. :wave2:

Re: 646 Lovejoy replacement.

Posted: Sat Dec 07, 2024 4:27 pm
by Spike188
Without hydraulics loading on trailer was going to be an issue.
20241207_103420.jpg
The lift cylinder pins were removed.
20241207_103417.jpg
Then bucket cylinder hoses disconnect and loader arm rod removed.
20241207_104244.jpg
once loader was disconnected it was flipped out of the way.
20241207_105435.jpg
and tractor was wenched onto trailer.
20241207_120112.jpg
After a short ride it was unloaded into a freinds shop with it's rear wheels an a lift table.
20241207_120126.jpg
We decided to pull the pump for access to the coupler.
20241207_122220.jpg
It was tight but the pump was accessible.
20241207_124059.jpg
By removing the deck lift linkage the pump and bracket fell
out.
20241207_123234.jpg
The were no hangups taking the coupling off of the pump. :lol:
40 minutes to remove loader and about the same amount of time to remove the pump. WIll order a new coupling from local supplier on Monday.

Re: 646 Lovejoy replacement.

Posted: Sat Dec 07, 2024 5:55 pm
by RoamingGnome
Well... between the sheared key and shattered coupler I think you found the weakest links in that connection... :smash:

Thanks for the photos, It's interesting to :letmesee: the difference in getting access to the pump in a 6XX series vs trying to get to the pump in my 446.

Re: 646 Lovejoy replacement.

Posted: Sat Dec 07, 2024 6:47 pm
by myerslawnandgarden
RoamingGnome wrote: ↑Sat Dec 07, 2024 5:55 pm Well... between the sheared key and shattered coupler I think you found the weakest links in that connection... :smash:

Thanks for the photos, It's interesting to :letmesee: the difference in getting access to the pump in a 6XX series vs trying to get to the pump in my 446.
Better to have a broken coupler than a pump with an inspection hole in the side!

Bob

Re: 646 Lovejoy replacement.

Posted: Sun Dec 08, 2024 5:17 am
by Eugen
Now that's interesting, and you have confirmation that the pump and engine are very strong, if the couple actually broke; unless it had a crack from years of use. I moved the engine forward to get the pump off on my various Case tractors. :cheers:

Re: 646 Lovejoy replacement.

Posted: Thu Dec 26, 2024 3:36 pm
by Spike188
A local supplier had a stock L110 with ax 5/8 keyed bore that fit a retro pump shaft in the 646.
20241225_113752.jpg
The coupling need a lot of machining to fit in the confined area of the pump mounting bracket.
20241226_142526.jpg
The coupling was sent out for machining but was returned untouched because of a long holiday. By customizing a center tie down bolt to a rotary table and 3 bolts in the table ways as stops the coupling was secure.
20241226_142642.jpg
Milling was a bit of an issue because the coupling could only be milled from one side and rotation direction without it dislodging.
20241226_151022.jpg
It turned out great given the limitations of the tools used.

Re: 646 Lovejoy replacement.

Posted: Thu Dec 26, 2024 4:44 pm
by DavidBarkey
:O thats a lot of material to come off to make it fit . Necessity is the mother of invention.

Re: 646 Lovejoy replacement.

Posted: Fri Dec 27, 2024 9:02 pm
by Spike188
Almost completed reinstalling the pump this afternoon.
But I had to bring the coupling home and take a bit off of the first step.
20241227_113721.jpg
this is a better photo of the clamp and stop system used to hold the coupling centered on the rotary table.

Re: 646 Lovejoy replacement.

Posted: Sat Dec 28, 2024 1:48 pm
by Spike188
20241228_134103.jpg
It is home. If doing a Lovejoy coupling again, pulling the motor out gain acsess would be my preference. Having a 1-1/2" socket and a complete arsenal of tools, made dropping the pump out the bottom of the tractor possible. Getting it back in place was a different story. At least a buddy was lending his hand.

Re: 646 Lovejoy replacement.

Posted: Sat Dec 28, 2024 3:06 pm
by JSinMO
Well now that your done playing around with that coupler its time to get the tractor off the trailer and get some work done! :giggle: :giggle: Just kidding!
Seriously though you did a great job getting it fixed. I’m very envious of your tools and ability! :worship: That should last for a long time! :thumbsup: