hi mileage BH601..drum unit wont pull out!

**bronco31** · 03-04-2016

at 2, 3 or 4 million.. im getting these Bizhubs with drum units that are super hard to pull out..
any body have a solution?

**SmellsHot** · 03-04-2016

Remove all the screws

Never heard of one with that issue. You have the two screws and the drive coupling screw and lock. It should just come out after that. The drum connector and the coupling are the only things holding the unit in place.

**emujo** · 03-04-2016

Assuming all the screws are out, then it may be the bearing inner race seizing on the drum shaft, Also have seen developer dropping into the metal guides cause some snagging issues. But that's all there is, shaft and guides on both sides. If you are seeing the drum unit slide partially out then hit a hard stop, then it may be the developer unit or the charge corona is a little out of position. I usually had issues getting the assy to slide back in place correctly on some of the ancient devices. Emujo

**bronco31** · 03-04-2016

yes it must be bound, the drum on the shaft or the bearing in back into the drum carriage circle...
probably the shaft... (Katun drum.. maybe the tolerance isnt accurate as an OEM Konica drum)

you guys have all have a great weekend!

**EarthKmTech** · 03-04-2016

I've had it before when I worked at a dealer and used katun drums too.

I don't remember how we got it out in the end but i think it required destructive percussive persuasion.

Maybe apply some anti seize to the shaft in future? (as long as it does not interfere with drum grounding)

**allan** · 03-04-2016

The rear plastic flange even on original drums will skew and cause the unit to stick to the bearing. Cross your fingers get someone to keep the machine from moving and use your weight to yank it out.
Feels wrong but it works.
Also stop yourself from flying backwards or land on your ass.

**havokprod** · 03-05-2016

I've seen burr's on the drum shaft.... once you get it out, file down the burr's.

**blackcat4866** · 03-05-2016

On the high volume Toshy color MFPs the drum shafts stick in the rear drum bearing(s). We use conductive grease on the shafts, and it cures it...

... once you get the imaging unit out. I've had both feet up against the front frame, and jerked with all my might ... and it didn't budge. If you can get to the front end of the drum shaft(s), gently tap on the end of the drum shaft to encourage it to let go. =^..^=

**bronco31** · 03-07-2016

i had to ask a tech from another company to help out and he got it out and aid he sanded down the front flange area where he believes it binds..... so there you have it!
(would of liked to have seen his technique on pulling that unit out cause i gave it my all and it wasnt budging!)

**allan** · 03-07-2016

Originally Posted by blackcat4866

On the high volume Toshy color MFPs the drum shafts stick in the rear drum bearing(s). We use conductive grease on the shafts, and it cures it...

... once you get the imaging unit out. I've had both feet up against the front frame, and jerked with all my might ... and it didn't budge. If you can get to the front end of the drum shaft(s), gently tap on the end of the drum shaft to encourage it to let go. =^..^=

Yea you would be able to get a nice sized bolt onto the shaft. Never quite had the right tools with me for trying that. should work like a charm to knock it on the shaft.