Ender Ender-3 Assembly instructions

◆This guide is for the Ender-3 3D printer.
◆Select the correct input voltage to match
your local mains (220V or 110V).
◆Because of software/hardware upgrades
and model differences, new revisions
may not be listed in this guide.
◆Detailed instructions for use are
available on the SD card.
Ender-3 3D Printer
Instructions for assembly

a. Remove the parts from the box and
remove any tape and padding from the
parts. Inspect the parts to make sure
they were not damaged in shipment.
b. Check the items on List 1 and List 2.
The wiring harness of component (Ba)
and component (N) has already been
connected.
Step1. BOM

Step 2. Install aluminum extrusions (L) and (R) to base (Ba)
Step 1. Place (L) on the left and keep the direction of the base
(Ba) facing front；
Step 2. Place the aluminum profile (L) vertically over the left side
frame of the base (Ba), be careful that the (L) profile has the
threaded holes with the short sides facing downwards. Using
the M5x45 screws and washers, pass through bottom hole of
the aluminum profile at the left side of the base (Ba), align the
threaded hole at the bottom of the aluminum profile (L), and
tighten the screw with an hexagon wrench;
Step 3. Place the aluminum profile (R) vertically over the right
side frame of the base (Ba). Note that the (L) profile has through
holes with the short sides facing downwards. Also note that the
holes are to the left (see diagram) to ensure that the aluminum
profiles are oriented correctly. , Using M5x45 screws and
washers, pass them through bottom hole of the aluminum
profile at the right side of the base (Ba), align the threaded hole
at the bottom of the aluminum profile (R), and tighten with the
4mm Allen key.
Prepare the following parts:
a. M5x45 socket head hex screws (4x)
b. M5 washer (4x)
c. Aluminum profiles (L) (1x)
d. Aluminum profiles(R) (1x)
e. Base (Ba) (1x)
f. 4mm Allen key

Step 3. Power supply and operation screen installation
Step 1. Keep the the base (Ba) facing towards you.
Step 2. Align the hole at the bottom left of the operation screen with the
threaded hole of the aluminum profile on the right side of the base (Ba),
secure with M5x8 screws, and use the Allen key to tighten them.
Step 3. Attach the switching power supply unit to the bottom as show on the
diagram to the left (button switch at the bottom right). Screw holes of the
switching power supply should pass through the holes of the aluminum
profile (R). Using M4x20 screws, pass through the front of the profile (R) and
use the Allen key to tighten the screws.
Prepare the following parts:
a. M5x8 hex drive rounded head screws (2x)
b. Operation screen assembly(S) (1x)
c. M4x20 socket head hex screws (2x)
d. Switching power supply assembly（P）-
(1x)
e. 3mm Allen key
f. *Select the correct input voltage to
match your local mains (220V or 110V).

Step 4. Z axis limit switch installation
1. Prepare limit switch assembly (ZI) and 3mm
Allen key；
2. The direction of the base (Ba) stays at the
front, and the switch assembly (ZI) is mounted
on the left side of the base (Ba) (as shown in
the diagram on the)；
3. Loosen the T-nut by hand until it is at the
end of the threads, but not so far it might fall
off. Then, fit into the slot in the aluminum
profile. When the bolt is tightened, the nut
rotates 90 degrees and then grasps the inside
of the slot.
4. Align the T-nut with the bottom aluminum
profile groove and secure with the Allen key
5. The limit switch assembly (ZI) has a small
hook that attaches to the aluminum profile
underneath the base (Ba) (reference: about 32
mm from the bottom).

Step 5. Z axis motor assembly installation
Step 1. Rotate base (Ba) 180°until the back is facing
towards you.
Step 2. Position the hole of Z-axis motor assembly at
the threaded hole of the aluminum profile (L) in the
base (Ba), secure with M4*18 screws, and tighten the
screws with a 2.5mm Hexagon wrench.
Step 3. Use a 2.5mm Hexagon wrench to loosen the
screws of the Z-axis coupling to prepare for insertion
of the lead screw.
Step 4. Insert the T8 lead screw into the coupling, and
tighten the screw that was loosened in the previous
step.
Loosen
the screw
Prepare the following parts:
a. T8 Acme lead screw (1x)
b. M4x18 hex drive flat head
screws (2x)
c. Z-axis motor assembly (Zm)
(1x)
d. 2.5mm Allen key

Step 6. X-axis bearing installation preparation
Prepare the following parts:
a. Aluminum profiles(B1)-(1x)
b.M4x16 Hex drive rounded head screws (4x)
c. M4 Washer (4x)
d. Extrusion assembly (E) (1x)
e. Nozzle kit (N)-(1x). The wiring harness of
component (N) and component (Ba) has
already been connected.
f. Timing belt(Be)-(1x)
g. Pulley assembly(K2)-(1x)
h. Belt tensioner(K1)-(1x)
i. 2.5mm Allen key

Step 7. X-axis assembly (part 1)
Step 1. Assembly of aluminum profile (B1) and extrusion
assembly (E). Aluminum profile (B1) is shown in the diagram
on the left(1). Pay attention to the position and direction of
the large hole. Align the hole of extrusion assembly (E) with
the threaded hole of aluminum profile (B1), it should be
noted that the hole has two plates, which aresecured with
M4*16 screws, and fixed to the second profile plate and the
aluminum profile (B1). Use a suitable Allen key to tighten the
screws.
Step 2. Adjust the direction of the nozzle kit(N) as shown in
Figure (3). Hold one end of the timing belt in the slot on the
right side underneath the nozzle kit (N), and the other end in
the path shown in Figure (2). Go through the extrusion
assembly (E), bypass the synchronizing wheel, and slide the
nozzle kit (N) from the left into the aluminum profile when
the path of figure (2) completes three quarters (in the red
line position in Figure 2). Then, complete the path of the belt
as shown in Figure (2). Then, stick the other end of the belt
to the slot on the left side below the nozzle kit (N).
Step 3. Position the pulley assembly (K2) in the position
shown in Figure (3), align the threaded hole in the aluminum
profile on the left side of the profile (B1), pass it with the
M4*16 screw, and use the 2.5mm hexagon wrench to lock
the screw;
Note. As you complete easy step, be sure to place the
parts according to the diagram on the left side.

Step 8. X-axis assembly (Part 2)
Step 1. Prepare belt tensioner assembly (K1) and
3mm Allen key.
Step 2. Rotate the X-axis assembly
180°horizontally.
Step 3. Pick up the belt tensioner assembly (K1).
Loosen the T-nut by hand until it is at the end of
the threads, but not so far it might fall off. Then, fit
into the slot in the aluminum profile. When the
bolt is tightened, the nut rotates 90 degrees and
then grasps the inside of the slot.
Step 4. Align the T-nut with the top aluminum
profile groove. Use an Allen key to tighten the
screw. Be careful not to tighten it all the way. Make
sure that the external actuator assembly (K1) can
be slid easily.
Step 5. Align the belt so that one end fits over the
geared pulley in the extrusion unit (E) and one end
fits over the idler in the belt tensioning assembly
(K1). Apply tension in the direction of the red
arrow to the left and use an Allen key as a lever to
push the belt around the pulley. Tighten the belt
and then tighten the two screws.
Step 6. Check the tension of the belt driving the X-
axis (on the gantry). The belt should be taut, with
no slack or slop.

Step 9. X, Z bearing assembly
Step 1. Prepare 2mm and 2.5mm Allen key.
Step 2. The direction of the base (Ba) keeps the end in front
and rotates the X-axis assembly horizontally by 180°.
Step 3. Align the pulleys on both ends of the X-axis assembly
with the aluminum chute on the base (Ba). Align the screw
rod with the nuts in the extrusion assembly (E). Use the
appropriate Allen key to slightly loosen the screws that
holding the nuts. Mount the X-axis assembly on the base (Ba)
Step 4. Manually apply force and slide the X-axis assembly up
and down to slowly lock the screws that secure the nut.
Step 4. Slide the X-axis assembly up and down again to make
sure the slide is smooth. If it is not smooth, try loosening the
screws of the coupling slightly, turning the screws gently, and
slowly tightening the screws.

Step 10. Fix the gantry frame
Step 1. Take out the aluminum profile
(B2), pay attention to the counterbore
hole at the top (see the figure on the left),
align the aluminum profile (B2) hole with
the threaded hole of the base (Ba), use
the M5*25 screw and washer, from the
top go through the aluminum profile
hole(B2), use a 4mm Allen key to tighten
the screws.
Step 2. Take out the end cover (C) of the
profile, and attach it to the ends of the
aluminum profile (B2). Apply a little
pressure and insert it into it. The end face
of the aluminum profile may be sharp. Be
careful not to scratch your hand.
Back
Prepare the following parts:
a. M5x25 socket head hex screws (4x)
b. M5 Washer (4x)
c. Profile end caps(C)-(2x)
d. Aluminum profiles (B2)-(1x)
e. 4mm hexagon wrench

Step 11. Rack installation
Step 1. Install one end of the plastic tube (R1)
on the sheet metal bracket (R2), hand-tighten
the plastic nut on the end of the plastic tube
(R1) and tighten by hand.
Step 2. Use a M5x8 screw to pass through the
hole of the sheet metal bracket (R2). Hand-
unscrew the M5 T-nut until it it is on the last
few threads of the screew.
Step 3. Align the T-nut with the top aluminum
profile groove and tighten with an Allen key.
Step 4. The Ender-3 mechanical part installation
has been completed.
Prepare the following parts:
a. Plastic tube（R1）-(1x)
b. Plastic nut (2x)
c. Sheet metal bracket（R2）-（2x）
d. M5x8 Hex Drive Rounded Head
Screws (2x)
e. M5 T-nuts (2x)
f. 4mm Allen Key
21

Step 12. Tube and wire connection Step 1. Rotate the printer by 90º
Step 2. Find the letters on the
1/2/4/7/8 wire harnesses, as shown
on the left, and insert it according to
the position indicated by the red
arrow on the drawing. After the
insertion, gently pull on it to insure
it’s firmly seated. Note that the X/Z
wide plug corresponds to the motor,
and the narrow plug corresponds to
the limit switch
Step 3. Red and black heated bed
connector (3#) connector can be
directly inserted.
Step 4. Connect the white PTFE
Bowden tube from the hot end to the
yellow tube upper coupler extruder
(See 5#). Insert the tube firmly into
the joint extruder and feel it slide in
and lock the position.
Step 5. The plug on the 6# harness is
inserted into the display board into
the jack marked "Exp3.
Step 6. Check that all harnesses are
securely connected.
Left
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Shenzhen Creality3D Technology CO.,LTD.
Official Website: www.creality3d.cn
Company Address: 12F,BuildingNo.3,JinchengyuanIndustrialArea, HuafanRoad,
Dalang,Longhua,Shenzhen,GuangdongProvince