12
3/4"
FEEDSCREW
HEAD
The head space should be checked on a weekly
basis. The head space is 3/4" on all DGI
grinder units. This should be done with the
excluder seal removed. Spacers should be
added if the measurement is more than 3/4".
Spacers should be removed if less than 3/4".
NOTE: THE FEEDSCREW SHOULD
NEVER RUB THE HEAD FLUTES!
If the feedscrew does not slide up on the
spline, it may be necessary to push down and
in, while turning the feedscrew slightly to
engage the drive spline. Never reach into the
hopper to engage the drive spline. The
feedscrew will jump in another inch when it
is seated on the spline. Check the head
HEAD SPACE ADJUSTMENT.
Item 1 is our Adjustment Washer Part# 1615
(1/16" thick) and/or Adjustment Washer Part
Number 1614 (1/8" thick). These are used with the
Thrust Screw Part# 1468 (Item 2). Add or
subtract washers to obtain the 3/4" head space
dimension.
Note: In the illustration the Thrust Screw is shown
mounted in the hole in the mainshaft. If the
threads in the main shaft fail, or a thrust screw
breaks off and removal is not possible, threads
have been provided in the feedscrew hole.
Obviously, the Thrust Screw should be installed in
the main shaft or the feedscrew, not both.
NOTE: This step is necessary when changing
feedscrews, heads, hoppers, or if the gearbox has
been rebuilt. Failure to set the proper head space
may result in serious damage to the unit. If the
feedscrew is allowed to rub the head, metal
particles may contaminate your finished product!
When the Head Space has been adjusted, remove
the feedscrew so that the Unit can be assembled for
operation.
Remember the excluder seal should not be on the
feedscrew when adjusting the head space.
Installation of excluder seal. Please note the
direction, the lip is suppose to touch the face
of the hopper! See drawing above.
