I’ve got a Jet planer/thicknesser combination machine.
Unfortuneately I tried to thickness a workpiece that was way too thick and it got stuck. I managed to get it loose but now the machine has these symptoms:
1. there is an odd sound when running the machine
2. the steel roller that feeds the workpiece in thicknessing mode is jammed and not moving, i.e. I can not thickness,
I have of course been in contact with the supplier of the machine but it will take some days to get a technician here to look at it.
Does anybode have advice?
Replies
Can you give us the model number so we can look up the exploded view?
A little more detail on the odd sound would be helpful also.
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You can't wait for inspiration. You have to go after it with a club.
Jack London
This is just a possibility from my own planer rehab experiences . The ends of the feed rollers are often mounted in either pillow blocks or a sprocket or gear drive connections .When a bearing block, gear or other goes the roller jams down usually on one side , as only one end probably caused the problem .
Also the shaft could be sheared , mine did . You need to be able to view the ends of the drive roller you may be able to see what's up unless it is the motor that's froze .
If Rick chimes in I think he can be of great service to you.
regards dusty
Sounds like you've stripped a plastic gear somewhere in the feed system. My buddy did that on a grizzly sander. They save 25 cents per unit by using plasiic instead of steel. It only took a few minutes to replace the gear, but it was a royal pain until he received the piece.
Unfortunately, planers are not designed to take heavy cuts.... 1/16 or so is all that the smaller units can handle. The first cuts are the worst because you don't know where the high and low spots are. When I take the first few cuts, I sneak up on it... the first pass or three may not even remove any wood. Once you've achieved 'contact', then you know where your cut depth should start.
SawdustSteve
They save 25 cents per unit by using plastic instead of steel.
Not necessarily. Been in service of printing equipment of all types all my life and worked closely with design and manufacturing engineers on design of new products.
Plastic/nylon/delron/fiber/brass/etc components are often used for safety and protection of other very expensive parts. Often these so called 'plastic parts are MORE expensive that the 'brute', off the shelf parts, they replace.
Just my thoughts...
If it's the JJP-12 pull the two inspection covers off the drive side of the machine. All the sprockets and gears on that model should be metal. Once the covers are off you will be able to inspect the belts, chain and sprockets that drive the rollers. Unplug the machine and rotate the motor pulley by hand and it should become obvious where the problem lies.
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You can't wait for inspiration. You have to go after it with a club.
Jack London
I recently had a similar sounding experience with my JJP-12. While thicknessing 12" wide stock I inadvertently fed at a very slight angle and before I realized the feed roller had already grabbed and the stock rode up on the bed lip... lots of unpleasant sounds followed by what sounds very much like the symptoms you are describing.
After closer inspection (removing the fence and taking off the belt guard) this is what a found. There is a plastic chain wheel that keeps tension on the drive chain. That wheel is attached to the machine by a metric carriage bolt (not something I could find locally). In my case the trauma caused by my shoddy feed technique had put enough tension on the chain to snap the head off the carriage bolt and dropped the idler wheel somewhere into the lower part of the machine (explains the chain noise and lack of drive). When I looked at the sheared head from the carriage bolt it seemed as if the weld had failed... very odd. I'm not sure if this was done intentionally as some sort of mechanical fail safe.
Anyhow... the next morning I contacted Jet Tech Service and spoke with Randy who was very helpful and had a bolt shipped out to me within 3 days. I remember thinking..."well that was easy." For some reason I was expecting voice mail and no returned phone calls for three days. Way to go Jet! Installing the new bolt was dead easy and I was back up and running in a few minutes. I hope that your issue is as simple to sort out as mine was and that you don't have to have someone come out to fix it.
I am still very impressed by this machine and even more impressed with Jet for their support.
Steve
I'd be willing to bet his problem lies in the idler also. Pretty beefy drive system for a 12" machine!
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You can't wait for inspiration. You have to go after it with a club. Jack London
Yeah hopefully it's the exact same problem as it was an easy fix. At least now I feel like I have a sniff as to what's under the hood. Although beefy is not the first thing that popped into my mind. There's definitely some Gilligan's Island going on in there when you engage that feed lever. As long as it continues to come out the other end without sounding like Mom driving Dad's stick shift home from the Christmas Party I'll still have that warm and fuzzy feeling. Meanwhile my little Makita lunchbox is sitting in the corner with a very smug look on it's face.
Steve
" like Mom driving Dad's stick shift home from the Christmas Party"I love that line.Frosty"I sometimes think we consider the good fortune of the early bird and overlook the bad fortune of the early worm." FDR - 1922
Dear fellow woodworkers,thank you so much for help and advice. That gave me the courage to open the machine and try to fint out what was wrong.
It seems my situation is exactly the same as that described by mmww. The carriage bolt was slightly bent and so was the square washer. The little plastic wheel I actually found on the workshop floor the day this happened, but didn't then understand what it was. Fortuneatly I kept it.
And yes, this is the JPT-310, which is the European JJP-12.
I have now ordered the parts that was broken and hope to be able to fix it myself. I suppose you did mmww?
This also means that I do not have to get a technician out to look at it, which means that this forum has contributed to saving a lot of money.
Again, thank you.
Well that's good news! Just make sure you have all the bits that go on that spindle assembly and you should be in good shape. You can reference the exploded diagram from the manual to make sure. I have attached the file... hopefully it will open.
Where in Europe are you located? I'm curious as to how your experience with Jet Tech Service in Europe went. If you need anything feel free to email me.
All the best.
Steve
Hi,
I am located in Norway, which is not the world centre for woodworking. I actually get much of my stuff from the UK and from Woodcraft. Importing machines however I have not tried, but luckily there is one supplier of Jet machines, 500 km away. They say that they have ordered the parts and will send them as soon as possible. The parts come from Germany. A Woodcraft order I usually have in a week or max 1 1/2, so I am curious to see if shorter distance means shorter time to wait for the parts.
Geir
43206.13 in reply to 43206.12
GEIR..
Hi, I am located in Norway, which is not the world centre for woodworking?
Hardly! you folks made them wonderful Viking boats that roamed the earth!
I was just wondering on your post.. I have a 'so called' junk Table Saw. I never needed parts for it! I use it every day!
Lowest postage here in the USA gets me anything from anywhere on the planet in at least a weeks time!
Hello Gier,
I would imagine that being in Europe you could find the metric carriage bolt locally but as for the square washer I think that would be a little more difficult. If I'm not mistaken as long as the drive mechanism for the planer is not engaged you could probably still use the jointer section of the machine. Hopefully you will not have to wait too long for the parts though, if you do run into any problems let me know and I would happy to help in any way I can. It may not be the woodworking center of the world but it is very beautiful. I must say that I do prefer the summer months as opposed to the time I have spent there in the winter. I hope your shop is heated well!
Good luck and let us know how you get along.
All the best.
Steve
for the square washer I think that would be a little more difficult
YES YES YES!
I have looked for a source for old US made square washers. Non to be found but not that good at the words to use in a search.. YES I can make them, but better things I need to do with my limited time!
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