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Loader mod


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#1 2broke2ride OFFLINE  

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Posted June 06, 2016 - 08:58 PM

Has anyone ever reworked the dump pistons on one of these loaders to get the bucket to roll back farther? I believe it is an original pk loader on a 1975 1614. I was thinking of moving the attachment point of the pistons on the loader arms "down" to effectively lengthen the reach of the pistons without messing with the geometry at the bucket
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#2 Auburn David OFFLINE  

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Posted June 06, 2016 - 09:04 PM

I think the one on my little loader does what your looking for..but it uses just one cyl to do it.

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#3 ol' stonebreaker OFFLINE  

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Posted June 06, 2016 - 10:21 PM

  If you moved the tilt cyl anchor brackets on the crossbar closer to the bucket just 2 or 3 inches would that accomplish what you want? It looks like it has more than enough throw to empty the bucket. That's the first loader bucket I've seen w/ the tilt cyl bucket brackets below the lift pins.

                                      Mike


Edited by ol' stonebreaker, June 06, 2016 - 10:24 PM.

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#4 2broke2ride OFFLINE  

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Posted June 06, 2016 - 10:26 PM

That's exactly what I was thinking of doing

#5 Auburn David OFFLINE  

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Posted June 06, 2016 - 10:27 PM

Mine comes up level and dumps fine...



#6 MNGB OFFLINE  

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Posted June 07, 2016 - 12:54 PM

Hi the bucket on your loader is the larger snow bucket and if the cylinder attach mys haven't been moved, then that's the way it was designed cause you would want it to tip all the way back and dump snow on you, but to do what you want moving the attach mt up should do what you want. Good idea on the steering post brace.

 

Attached File  1975 Sales Brochure.pdf   5.83MB   38 downloads


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#7 2broke2ride OFFLINE  

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Posted June 18, 2016 - 08:48 PM

Ok, so I moved the upper cylinder mounting points toward the bucket today. Now the bucket curls back all the way to the loader arms but it doesn't dump nearly as well. Anyone have any further suggestions? I'm getting closer, just need to keep tweaking things
Curled back
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Dumped all the way
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#8 toppop52 OFFLINE  

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Posted June 18, 2016 - 10:19 PM

Longer cylinders...

#9 Glenn Ayers OFFLINE  

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Posted June 19, 2016 - 06:32 AM

PKbucket.jpg The design of having the cylinders mount below the bucket attachment is not good design ... but it gives the advantage of using the strong direction of cylinder travel (push .. instead of pull).    Mounting the tilt cylinders to the uppermost part of the bucket (above the main bucket pins) is the best design ... but you may need larger diameter cylinders to make up for cylinder "Pull power vs "Push power) & the cylinders may need to be longer to get "Range of motion" required for full bucket closure & dump.

My Guess is PK used their design for simplicity & weight savings.

 

My long term plan is to redesign the whole tilt system on mine ... to use a "Z bar" set up ... or sometimes called a "Bell Crank" system .... like bigger loaders use.   This lets the cylinders "Push"  (strong direction) to close the bucket (Breakout Force) ... & weak direction of cylinders to Dump the bucket.

 

.


Edited by Glenn Ayers, June 19, 2016 - 06:47 AM.

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#10 MNGB OFFLINE  

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Posted June 19, 2016 - 07:55 AM

Just out of curiosity why do you want the bucket to curl all the way back, as you raise the loader the bucket will be even more back and the load will tend to fall out the back onto the tractor.  As posted longer cylinders will make some difference or you could go half way from where it was to where it is now.


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#11 KennyP ONLINE  

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Posted June 19, 2016 - 08:27 AM

Just out of curiosity why do you want the bucket to curl all the way back, as you raise the loader the bucket will be even more back and the load will tend to fall out the back onto the tractor.  As posted longer cylinders will make some difference or you could go half way from where it was to where it is now.

I was just thinking the same thing.



#12 2broke2ride OFFLINE  

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Posted June 19, 2016 - 08:58 AM

Just out of curiosity why do you want the bucket to curl all the way back, as you raise the loader the bucket will be even more back and the load will tend to fall out the back onto the tractor. As posted longer cylinders will make some difference or you could go half way from where it was to where it is now.

As it was before, the bucket would barely curl back level so when I would try too scoop andything with it half of it would just fall out of the bucket when I would go to raise it. I am simply trying to get it to act a little more like the bigger tractors I'm used to using.

#13 MNGB OFFLINE  

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Posted June 19, 2016 - 10:13 AM

Ok I understand now what your trying to get at, per PK loader specs with the tractor on a flat surface and the bucket down the roll back is suppose to be 22 degrees the dump angle  45 degrees on a 1614 and on a 2414 the roll back is 18 degrees and dump is 45* the standard dirt moving bucket is 36" wide the snow bucket is 48" and bucket depth is 23.25" wt cap is 650 lbs.


Edited by MNGB, June 19, 2016 - 10:15 AM.


#14 MNGB OFFLINE  

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Posted June 19, 2016 - 05:01 PM

Hi, ok I went in to the shop this afternoon and made a few measurements my PK is a 1984  1618 with factory loader 36" bucket, with the bucket on the floor and full curl it measures 7" up with the loader arms up in full dump position the bottom of the bucket is slightly less than vertical but more then 45* with full back curl the bucket is just about back to the arms, the bucket pivot mounts are lower than the curl mounts that measures 3.75" center to center they are the standard cylinders 2'X 6.5" hope this helps






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