Specifications

3. Embroidery Head Maintenance
General
This section of the manual provides parts replacement procedures and various
adjustments required during repair maintenance of the embroidery head only.
Information for service maintenance on trimmers is located in Section 4 and the rest
of the machine is located in Section 2 of this manual.
These procedures are guidelines for performing repairs and must be used by
personnel practicing good maintenance and repair techniques. Refer to the
Maintenance Philosophy topics in Section 1 of this manual for discussion of good
maintenance and repair techniques, including concerns with static electricity.
WARNING! Failure to practice good maintenance and repair
technique may result in injury to personnel performing the
work, and damage to the equipment!
NOTE:The Warranty is exclusive of, and may be VOID if, poor maintenance practices
have caused damage to the equipment.
Arm and Bed Assembly
The arm and bed assembly provides a stable embroidery head platform. All other
components of the head are attached to this assembly.
Inside the arm and bed assembly are the shafts, belts, and pulleys that drive the
needle and rotary hook. Attached to the outside of the arm and bed assembly are
the Z drive motor, needle case and color change mechanism, thread tree, and
trimmer grabber blade control.
Z Drive Mechanical System
The embroidery heads are driven by the Z drive system. This is a mechanical system
of shafts, gears, and belts driven by a single motor. Each head has two main shafts
running through it. The upper shaft moves the needle, take up lever, and other
associated parts as the lower shaft rotates the hook assembly and provides for
optional trimmer blade movements. These shafts are connected by a belt at the rear
of the head.
A bevel gear is attached to the rear of the upper embroidery head shaft of each
head. Mating with each of these four embroidery head bevel gears are bevel gears
attached to the Z drive shaft running horizontally along the back of the peripheral
and aligning perpendicular to the rear of the heads (see Figure 3-1).
At the left end of the Z drive shaft is a pulley, driven by a belt, which in turn is
driven by the Z drive motor. Also at this end of the Z drive shaft is an in-line shaft
encoder which detects rotational position of the shaft.
3 - 1
110279-01, Rev B 3. Embroidery Head Maintenance