Stratasys uPrint, Service Manual, Page: 259 / 383

5-50
Idler Wheel Check/Adjustment for uPrint
This procedure adjusts the amount of tension that the Idler Wheels apply to the filament.
1.
Rotate the Drive Wheel so that the set screw head is on the bottom of the Wheel. See
Figure 5-369.
2.
Check/Adjust the Right (Model) side Idler Wheel clearance: See Figure 5-369.
A.
Place the Toggle Bar in the full Left position.
B.
Check the clearance between the Drive Wheel and the Idler Wheel - a 0.003 inch
feeler gauge (shim stock) should have a light drag when placed between the
Drive Wheel and the Idler Wheel.
C.
Place the Toggle Bar in the Neutral position (half way between full Left and full
Right).
D.
Insert a 0.005 inch feeler gauge between the Drive Wheel and the Idler Wheel.
E.
Return the Toggle Bar to the full Left position - the 0.005 inch feeler gauge should
be firmly held between the Drive Wheel and the Idler Wheel.
F.
If the tension is not correct remove the Idler Wheel Tension Adjust screw (5/64”
Allen), apply LocTite 222 to the screw threads, and install the screw.
G.
Adjust the screw to obtain a light drag on .003 inch feeler gauge when it is
positioned between the Drive Wheel and the Idler Wheel.
H.
Check the tension with the 0.005 inch feeler gauge as above.
I.
Continue to adjust the screw until the prescribed tension is obtained.
J.
When adjustment is complete, place the Toggle Bar in the Neutral position, and
remove all feeler gauges.
K.
Place the Toggle Bar in the full Left position and spin the Idler Wheel by hand.
The Idler Wheel should spin freely without drag. If drag is present, re-check
adjustments.
Figure 5-369: Idler Wheel Adjustment - Right Side
Drive Wheel
rotated so set
screw head is
on the
bottom.
Right side Idler
Wheel Tension
Adjust screw.
Use 0.003 inch
and 0.005 inch
feeler gauges
(shim stock) to
check
clearance.