A T650 came in the shop with a shattered right side transfer roller bearing. The P/N is 40X1888. (All variations of the T65X series use the same part -- Lexmark calls it the 'right transfer roll bracket assembly'.) Here's a view of an intact bearing.
That one claw at the rear end of the part can be a bit awkward to get out and back in. Apart from that, replacing one of these is a straightforward job. You'll need a stubby No. 2 Phillips screwdriver for the screw that holds this part in place. For a T650, proceed as follows:
1) Toner Cartridge
2) Paper Tray (Tray 1)
3) Redrive Cap
4) Back Door
- Disengage the support strap from its 'inverted T' slot and pull the door off its hinge pins.
5) Connection Access Cover
- Open it fully and its hinges can be popped free rearward.
6) Lower Rear Cover w/Fuser Access Door
- Three M3x10mm black washerhead threading screws.
- Open the fuser access door -- two claws.
- Pull the cover away at your left and slide the cover toward your right. A downward-pointing hook will slide off a lip at the rear of the chassis.
- NOTE: The above-mentioned hook makes this an awkward part to get back in place. You have to exactly re-create the cover's attitude as the hook was coming off to get it back on again.
7) Left Side Cover
- Two M3x8mm black washerhead threading screws in the handgrip wells.
- Two M3x10mm washerhead threading screws in deep wells in the side of the toner cartridge cavity.
- Tug at the front lip and two upper claws and one lower claw will pop free. The cover's rear hinges come away easily.
8) System PCA Pan Cover
- One M3x6mm black pan head screw at the upper rear.
- Loosen off five M3x6mm black pan head screws.
- Slide the cover forward slightly and pull it away over the screwheads.
9) MP Feeder Platform
- Flex the slide pins' ways to free the slide pins.
- Tip the platform up to vertical and pull it off its hinge pins.
10) MP Feeder Door
- Pry the support arms to pop their pins out of their ways.
- Slide the door leftward off its hinge pins.
11) Upper Deflector
- Pull the extreme left end of the piece toward you and force the deflector to the right. It can then be unhooked at the right end.
- NOTE that reinstallation of this item is complicated by a downward-projecting spike near its left side end. You really have to flex the thing to get it to go back into place.
12) MP Feeder Pickup Roller w/Slip Rollers
- One e-clip.
13) MP Feeder Lower Deflector/Elevator Flap Assembly
- Disconnect the sensor cable at J35 on the system PCA (blue connector).
- Two M3x12mm washerhead threading screws at the right side.
- Two M3x10mm washerhead threading screws at the left side. A flashlight is helpful for locating the upper one of these two.
- Pull the item away while extracting the sensor cable.
14) Inner Deflector
- Two tabs at lower front, left and right.
- Two upward-hooking claws near the upper rear; accessible through rectangular openings.
15) Transfer Roller
16) Set the machine on its back.
17) Toner Density Sensor
- One M3x10mm washerhead threading screw from underneath.
- Just move the sensor aside.
18) Right Side Transfer Roller Bearing
- One M3x8mm washerhead threading screw.
- Pry/force up the claw at the rear of the part.
1) Toner Cartridge
2) Paper Tray (Tray 1)
3) Redrive Cap
4) Back Door
- Disengage the support strap from its 'inverted T' slot and pull the door off its hinge pins.
5) Connection Access Cover
- Open it fully and its hinges can be popped free rearward.
6) Lower Rear Cover w/Fuser Access Door
- Three M3x10mm black washerhead threading screws.
- Open the fuser access door -- two claws.
- Pull the cover away at your left and slide the cover toward your right. A downward-pointing hook will slide off a lip at the rear of the chassis.
- NOTE: The above-mentioned hook makes this an awkward part to get back in place. You have to exactly re-create the cover's attitude as the hook was coming off to get it back on again.
7) Left Side Cover
- Two M3x8mm black washerhead threading screws in the handgrip wells.
- Two M3x10mm washerhead threading screws in deep wells in the side of the toner cartridge cavity.
- Tug at the front lip and two upper claws and one lower claw will pop free. The cover's rear hinges come away easily.
8) System PCA Pan Cover
- One M3x6mm black pan head screw at the upper rear.
- Loosen off five M3x6mm black pan head screws.
- Slide the cover forward slightly and pull it away over the screwheads.
9) MP Feeder Platform
- Flex the slide pins' ways to free the slide pins.
- Tip the platform up to vertical and pull it off its hinge pins.
10) MP Feeder Door
- Pry the support arms to pop their pins out of their ways.
- Slide the door leftward off its hinge pins.
11) Upper Deflector
- Pull the extreme left end of the piece toward you and force the deflector to the right. It can then be unhooked at the right end.
- NOTE that reinstallation of this item is complicated by a downward-projecting spike near its left side end. You really have to flex the thing to get it to go back into place.
12) MP Feeder Pickup Roller w/Slip Rollers
- One e-clip.
13) MP Feeder Lower Deflector/Elevator Flap Assembly
- Disconnect the sensor cable at J35 on the system PCA (blue connector).
- Two M3x12mm washerhead threading screws at the right side.
- Two M3x10mm washerhead threading screws at the left side. A flashlight is helpful for locating the upper one of these two.
- Pull the item away while extracting the sensor cable.
14) Inner Deflector
- Two tabs at lower front, left and right.
- Two upward-hooking claws near the upper rear; accessible through rectangular openings.
15) Transfer Roller
16) Set the machine on its back.
17) Toner Density Sensor
- One M3x10mm washerhead threading screw from underneath.
- Just move the sensor aside.
18) Right Side Transfer Roller Bearing
- One M3x8mm washerhead threading screw.
- Pry/force up the claw at the rear of the part.
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