Creality AL-BMG User manual
AL-BMG Air Cooled Extruder Assembly Manual
1. Thank you for purchasing our products! Please check all the parts form the package for intactness.
If there is any missing or damage parts please contact the seller immediately. Before installation
please check if all the fans heaters are in correct voltage.
2. Disassemble the stock print head，remove all the parts from the X carriage plate.
3. Please prepare: AL-BMG_mounting_plate and cable bundle support part.
4. Hold the cable_bundle_support and use two flat head screws M3x8 screws to secure it.
5. Fix the AL-BMG_mounting_plate on to the X carriage use two M3x8 and one M3X12 screws to
secure it. Please make sure that the mounting plate is paralleled to the X-axis beam. The top left
screw hole may not alignment on some cloned CR/Ender printers please just leave it empty.
6. Please make sure that after tightening the heat breaker and nozzle into the AL-BMG-AC extruder
body the heat block position should looks like shown in the picture down below.
7. Install the thermistor and heater cartridge to the heat block as shown in the picture down below.
In this step you have to decide to using which kind of thermistor. It depends on if you want or able to
flash the firmware of your board. There are two type of thermistor in this kit：104gt-2 is the yellow
shrink tube one and the black shrink tube is the NTC100K B3950 which commonly used by most cheap
Chinese machines. If you unable to flash the firmware of your machine you may need to install the
NTC100KB3950 thermistor or if your stock thermistor is cartridge style you can use the stock one
instead. If you can flash your board to latest Marlin you can use the 104GT-2 thermistor and choose
“5” Temperature sensor in the Marlin firmware for more accurate temperature reading.
8. Prepare two M3x10 screws and spring washers. Use them to tighten the extruder assembly to the
AL-BMG_mounting_plate. Please use the ball head hex wrench within this kit.
9. Pull the fans wires through the guide groove on the back of the AL mounting plate like shown
down below.
10. Please prepare the rest parts of extruder and try to install it to the body.
11. Install the motor gear as shown in the picture down below.
12. Put all the wires into the channel of the cable_bundle_support after that try to install the motor to
the extruder assembly. Motor cables must be oriented towards the mounting plate.
13. Align the stepper motor shaft with the hole below the white main gear. Push it in gently.
Slightly rotate the main gear to allow for the insertion. Please also check if all the wires are in the
channel.
14. Insert the 3x M3X35 screws with spring washer into the screw hole of the extruder. Use the 2.5
Hex Key to slightly tighten the screws.
15. Rotate the white main gear to check if it rotates smoothly. Use the 2.5 Hex Key to tighten the
screws, one by one. After that please install the silicone sock to the heater block.
16. Press three M3 nuts into the 5015_fan_mount_ac printed part.
17. Install the 5015_fan_duct to the fan mount part by one M3X10 screw as shown down below.
18. Install the fan mount assembly and 3010fan into the extruder copper heat sink by using two
M2.5x16 screws (not self-tapping). Don’t over tighten the screws it may damage the threaded
hole.
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