Liquefier Alignment - HP Designjet 3D Service Manual

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 .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 Right position and spin the
Idler Wheel by hand. The Idler Wheel should spin freely
without drag. If drag is present, re-check adjustments.
Figure 412: Idler Wheel Adjustment - Left Side
Left side Idler
Wheel Tension
Adjust screw.
For SST: Use .003 inch and .005
inch feeler gauges (shim stock)
to check clearance.

Liquefier Alignment

This aligns the Liquefier Tubes with the filament path.
1. Right (Model) side:
A. Move the Toggle Bar to the full Right position.
B. Make sure the right side Heater Block Mount and Clamp
screws are loose.
C. Make sure that the Liquefier Alignment Rod is straight. Roll
the Rod along a flat surface to check for bends. Straighten
as necessary.
D. Insert the Liquefier Alignment Rod from the bottom of the
right side heater block - small end first.
E. Push the Alignment Rod up into the Main Pivot Block.
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