C253 jamming instantly

[tsbservice]

Re: C253 jamming instantly

Ah ok then its weird because I installed new clutches on both the rollers.

I haven't oiled anything though.
I got 2 new original clutches like in your picture and and replaced the old ones.

Still having jams though.

Then mark rollers as advised by copyman and see if they rotate at all. Electromagnetic clutch at the back of feed unit may fail too.

[copyman]

Re: C253 jamming instantly

Hello again,

just to clarify there is 1 x one way bearing or am I missing something?

Thank you

Think you confirmed the rollers are turning. Can you post a few pictures of the feed unit. Will compare with one in shop.

My vote is NO oil on the one ways. Just clean with alcohol and scuff up the shaft where one way bearings contact it. I've literally done over 1,000 of these rollers and never once have I had an issue with one ways.

I use to replace the one ways automatically but can't remember last time I replaced one. Cleaning & scuffing always works!

[Hansoon]

Re: C253 jamming instantly

There are many opinions on the forum here about the one way bearings. The whole point of them is to spin freely in one direction and grab the shaft securely in the other direction. You can use your own discretion here, but I personally clean them and don't oil. I don't feel like something the needs to grab securely should have oil on it to make things slippery. I also use a mild abrasive, like a scotch bright pad (green colored), to scuff up the metal shaft where the one way rides. The shaft gets a mirror like finish from the bearing turning on it, which makes the shaft slippery. Scuffing the shaft under the bearing gives it something to grab onto. You don't want to carve up the metal shaft, but just a light scuffing to the point where the shaft is no longer reflective, but dull looking.

Good luck.

+1

I have the one-ways in stock but I NEVER felt the need to change them. Cleaning with alcohol or brake cleaner for the plastic ones + VERY little light oil for the old full metal ones. BUT....... scuffing op the shaft as suggested is mandatory!

Hans

[xdelios]

Re: C253 jamming instantly

Hello,

So here is an update.
I got the rollers out cleaned the one ways with alcohol and did "rub" the metal shaft to make it have a grip a bit. All good there.

It does not work still.
I removed the bypass and tray 2 to have a better visual from the side.

It seems that the rollers aren't moving after all, I was wrong.
I made sure that the plastic at the end of the tray 1 touches the actuator from the feed assembly as it should, that is fine.

The one thing I noticed is now the paper is not lifted.
This seems very weird too me because I am very sure it was working.

The metal shaft an the lift mechanism at the end of the tray is not getting into the motor. I dont know if it should or not I just spotted that.
I am attaching a picture so you can see.
Now I am suspecting that this is the issue, it just seems strange because at the start of my problem paper was lifting normally. On a sidenote I was also using half a ream to make sure the weight wasnt a problem.

271999007_636659574215871_5430502233852960541_n.jpg

[srvctec]

Re: C253 jamming instantly

Hello,

So here is an update.
I got the rollers out cleaned the one ways with alcohol and did "rub" the metal shaft to make it have a grip a bit. All good there.

It does not work still.
I removed the bypass and tray 2 to have a better visual from the side.

It seems that the rollers aren't moving after all, I was wrong.
I made sure that the plastic at the end of the tray 1 touches the actuator from the feed assembly as it should, that is fine.

The one thing I noticed is now the paper is not lifted.
This seems very weird too me because I am very sure it was working.

The metal shaft an the lift mechanism at the end of the tray is not getting into the motor. I dont know if it should or not I just spotted that.
I am attaching a picture so you can see.
Now I am suspecting that this is the issue, it just seems strange because at the start of my problem paper was lifting normally. On a sidenote I was also using half a ream to make sure the weight wasnt a problem.

[ATTACH=CONFIG]51698[/ATTACH]

It appears that the pin in the lift shaft has hit a high spot on the white cam that is spring loaded. If the lift motor turns, it then allows the pin on the shaft to "fall" into one of the low spots of the cam, then lifting up the paper lift plate. So, I'd replace the lift motor if it's not lifting and that pin never winds up in the cog like it should (which would mean the lift motor isn't turning).

[xdelios]

Re: C253 jamming instantly

It appears that the pin in the lift shaft has hit a high spot on the white cam that is spring loaded. If the lift motor turns, it then allows the pin on the shaft to "fall" into one of the low spots of the cam, then lifting up the paper lift plate. So, I'd replace the lift motor if it's not lifting and that in never winds up in the cog like it should (which would mean the lift motor isn't turning).

Hello,

If I understand correctly this little metal shaft should be inside the white wheel yes ?
That is a motor problem or is the plastic endpoint from the lift lever somehow misplaced ?

[srvctec]

Re: C253 jamming instantly

Hello,

If I understand correctly this little metal shaft should be inside the white wheel yes ?
That is a motor problem or is the plastic endpoint from the lift lever somehow misplaced ?

If the little metal shaft doesn't go into the white plastic and the tray is all the way in the machine, most likely the lift motor assy. (it's all encased in a black plastic housing as a unit and turns the white plastic part) needs replaced.

[tsbservice]

Re: C253 jamming instantly

I would closely examine tray plastics around metal pin it may be cracked.

[copyman]

Re: C253 jamming instantly

Let me know if you end up needing parts. I still have 3 working C253's getting closer to the door & dumpster. Will only ship to USA address.

[Synthohol]

Re: C253 jamming instantly

just another thought, check the paper set sensor in service mode. it may think the tray is already lifted.
compare all the 1s and 0s between tray sensors. maybe one is bad.
reseat the connectors for the tray, maybe a bent pin.
if you take the paper out, does the tray show ready anyway?

[xdelios]

Re: C253 jamming instantly

I would closely examine tray plastics around metal pin it may be cracked.

The tray has a small crack at the back since the day I got it but I assumed that cannot be the problem since it was literally from the first day I used the machine, and I am not slamming the tray hard when closing it just to be safe.

just another thought, check the paper set sensor in service mode. it may think the tray is already lifted.
compare all the 1s and 0s between tray sensors. maybe one is bad.
reseat the connectors for the tray, maybe a bent pin.
if you take the paper out, does the tray show ready anyway?

Ok so I tested what you said and that is exactly what happens.
The tray shows ready even without paper in it. What sensor am I looking for though , where is that located?

Thank you for your time all, I really appreciate it.

[Synthohol]

Re: C253 jamming instantly

check part #7 and both #13s
you can check in sensor check in service mode.

[xdelios]

Re: C253 jamming instantly

check part #7 and both #13s
you can check in sensor check in service mode.

Hello,

I have already checked those.
Part 7 is in place just fine I did not touch that.

I cleaned both 13s with a q-tip to make sure they got nothing that maybe is blocking the sensor.
Still the same.

I attach bellow a picture of the sensor while I have tray 1 installed and empty.
If I understand correctly the sensor thinks the tray is has paper and if I put sheets in it does not lift anything, I change the motor so that is not the problem for sure.

272121747_454108046396257_6214468501402348346_n.jpg

[Synthohol]

Re: C253 jamming instantly

tray 1 shows upper limit as a 1. should be a zero if empty i believe.

[xdelios]

Re: C253 jamming instantly

tray 1 shows upper limit as a 1. should be a zero if empty i believe.

I was looking at paper empty to be honest.
Still the upper limit does not change even I remove tray.

Is this part 8? Again all these seem to be in place so that should not be a problem I suppose.