FLSUN QQ Stepper Motor Damper Replacement

はじめに

If a stepper motor damper becomes worn or damaged it can cause a misalignment of the stepper motor and can cause the belt to slip. Slipped belts can cause layer shifts and other printing problems. Follow this guide to replace the damaged stepper damper.

必要な工具と部品

手順1 Power Down Printer

FLSUN QQ Stepper Motor Damper Replacement, Power Down Printer: 手順 1、 1の画像 1

turn off power
unplug from wall

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手順2 Open Base of Printer

FLSUN QQ Stepper Motor Damper Replacement, Open Base of Printer: 手順 2、 1の画像 1

Use 2.5mm hex key to remove 6 screws from base of printer
save screws for later

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手順3 Identify Damaged Damper

FLSUN QQ Stepper Motor Damper Replacement, Identify Damaged Damper: 手順 3、 1の画像 1

visually inspect all dampers for damage
most likely damage is to the rubber section

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手順4 Remove Tension from Belt

FLSUN QQ Stepper Motor Damper Replacement, Remove Tension from Belt: 手順 4、 1の画像 1

unscrew thumbscrew that tensions the belt
save thumbscrew for later

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手順5 Remove Belt from Stepper Motor

FLSUN QQ Stepper Motor Damper Replacement, Remove Belt from Stepper Motor: 手順 5、 2の画像 1

FLSUN QQ Stepper Motor Damper Replacement, Remove Belt from Stepper Motor: 手順 5、 2の画像 2

use 2mm hex key to remove belt cover
remove belt from stepper motor
use 2.5mm hex key to remove stepper motor bracket from the top side

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手順6 Remove Geared Pulley from Stepper Motor

FLSUN QQ Stepper Motor Damper Replacement, Remove Geared Pulley from Stepper Motor: 手順 6、 1の画像 1

measure the position of the geared pulley so that you can put it back later
use 2.5mm hex key to loosen set screws
slide geared pulley off of stepper motor shaft

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手順7 Remove Motor Bracket

FLSUN QQ Stepper Motor Damper Replacement, Remove Motor Bracket: 手順 7、 1の画像 1

use hex key to remove last screw from the stepper motor mount

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手順8 Replace Damaged Damper

FLSUN QQ Stepper Motor Damper Replacement, Replace Damaged Damper: 手順 8、 3の画像 1

FLSUN QQ Stepper Motor Damper Replacement, Replace Damaged Damper: 手順 8、 3の画像 2

FLSUN QQ Stepper Motor Damper Replacement, Replace Damaged Damper: 手順 8、 3の画像 3

use hex key to remove 2 screws holding the damper to the stepper motor
use Phillips #1 to install new damper
alternatively, use hex key to install new damper with old screws

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手順9 Re-Install Stepper Motor

FLSUN QQ Stepper Motor Damper Replacement, Re-Install Stepper Motor: 手順 9、 2の画像 1

FLSUN QQ Stepper Motor Damper Replacement, Re-Install Stepper Motor: 手順 9、 2の画像 2

re-attach geared pulley
re-attach stepper motor mount/bracket to the damper
Remember the screws you saved when removing the motor mount?
re-attach stepper motor bracket with screws from above
re-install pulley / tensioner to top of frame with thumb screw
re-tension belt
finally re-install the belt cover
Some people have suggested that this belt cover is not needed. It is possible that you could re assemble with one of the screws left over from replacing the damper to secure the damper to the mount.