How to Module - Extruder Assembly

Gather parts and tools for Extruder Assembly

Photo 1 - 1.5mm Allen Driver

Photo 2 - 2.5mm Allen Driver

Photo 3 - 13mm Wrench

INSTALL IDLER BOLT

Install M3 x 25 SHCS, M3 Washer and M3 Nut into the Idler assembly

Only put the screw in until the tip is flush with the nut

TIP: Set M3 Nut into the hexagon cutout and hold with your finer to install the bolt

INSTALL EXTRUDER WASHER INTO BODY

Place the printer extruder washer into the extruder body

INSTALL GEAR, BOLT AND FIRST BEARING

Install 4 x M8 washers onto the hobbed bolt then a 608 bearing.

Once installed, does the hobbing on the bolt line up with the small hole going through the extruder body?

If you need to adjust it's location, you can add either a 0.50mm or 1.0mm shim washer to get the correct spacing.

Does the hobbing line up with the hole in the center?

INSTALL SECOND BEARING

On the opposite side of the gear, add a 608 bearing, M8 Washer and a M8 locknut.

Tighten the Locknut down until the bearing is seated and there is no space between the Nut, Washer and Bearing.

The large gear shouldn't be able to rock back and fourth but should spin freely.

Does the gear turn freely?

Does the hobbing still line up with the hole in the body?

Record what type and how many washers were used.

INSTALL IDLER ONTO BODY

Install extruder idler onto the body.

Tighten the M3 x 25, SHCS bolt down to secure the Idler

Tip: Place the leg with the nut on the body first and twist the Idler onto the body.

Does the Idler swing freely on the bolt?

SMALL GEAR ASSEMBLY

Install the M3 nut into the bottom of the small herringbone gear.

Then install the M3 x 6mm set screw through the side of the small gear and into the nut.

Be sure the M3 x 6mm set screw does not protrude into the hole through the small gear.

INSTALL GEAR ON MOTOR

Locate the flat side of the motor shaft.

With the set screw aligned with the flat, slide the small gear onto the motor shaft.

The location will be adjusted later so positioning isn't important at this point.

Do not tighten the set screw yet.

Is the set screw aligned with the flat?

INSTALL MOTOR

Holding the motor in the location where it will be mounted, align the herringbone gears by sliding the small gear in or out on the motor shaft so the V-grooves are centered on each other.

Install motor using 3x M3 x 12mm SHCS and 3x M3 washers, taking note of the orientation of the motor wires.

Push the gears together while you tighten the bolts to make sure the contact is tight.

Tighten the set screw on the small herring bone gear.

Are the motor wires oriented correctly?

Are the V-grooves of the gears aligned?

Is there any back-lash in the gears? Can you spin the large gear for several rotations?

INSTALL M4 NUTS INTO TOP OF BODY

Install 2x M4 nuts into the top of the extruder body as shown.

Make sure you can see the nuts from the side so you can install bolts later.

Tip: Nuts only go in one way, the flats of the nut must be vertical.

Photo 1 - Nuts in body from top

Photo 2 - Nuts in body from side

INSTALL IDLER TENSIONER

Install M4 x 55 with thumb knob, M4 washer, extruder spring, M4 washer and Extruder latch into M4 nut installed in body.

Then put another M4 x 55 with thumb knob, M4 washer, extruder spring, M4 washer through the Extruder latch and into the body.

Photo 1 - Prep parts for assemby

Photo 2 - Idler tensioner assembly

Can you adjust both bolts in and out by hand?

Can you swing the tensioner up and down?

REVIEW THE EXTRUDER ASSEMBLY