John Deere No-Till Drill Seed Boot
Mounting Hole Repair Kit
Available for 50, 60, and 90 Series Drills!
The John Deere 750 no till drill and
it's descendants use cast lugs to
locate the seed boot.  As the center
hole wears, the rear of the seed
boot is allowed to flex upwards,
allowing seed to randomly miss the
furrow.  If you are seeing seed on
not worn excessively, you need to
address the egg shaped wear in the  
center hole.
Our solution to fix this problem
involves drilling the egg shaped hole
followed by installation of a hardened
interference fit full length bushing.  
Here you can see the drill guide
installed with it's case hardened
bushings.  These drill bushings are
very hard and we have seen virtually
no wear in them through the course
of a typical rebuild, insuring that the
last hole is as true as the first.  If you
are repairing many Deere grain drills,
such as in a shop situation, these
bushings can be easily replaced to
insure a tight fit every time.
into place.  This particular drill jig is
Here is a side view of the jig bolted
Here is a side view of the jig bolted
into place.  This particular drill jig is
on it's second grain drill.  It has been
used to drill out 56 holes so far (112
individual ears).
Here is the drilling operation being
performed with a 3/8" hand-held
Dewalt drill motor.  Two 5/8 drill bits
are included with the kit.  One will
easily remain sharp throughout the
entire operation so long as you don't
break the bit through side loading or
over torquing with an over sized drill
motor.  
The kit also includes a straight sided
reamer which is very valuable in
taking care of the inevitable burrs
encountered when breaking through
the rear of the ears.  It also is very
valuable when dressing out burrs
created by wear around the original
egg shaped holes.
Here is a view of the cleaned up and
over-sized holes.
Here is the hardened bushing being
driven into place using the simple
bushing driving tool included in the kit.
The production driving tool is
somewhat longer than this prototype.
 
hole.  The fit between the bushing
interference fit designed to allow
future wear to occur between the
Here is a front view of the repaired
mounting bolt and the ID of the
bushing.  If the grain drill lasts long
enough to develop seed boot slop in
the future, repair would only require
driving out the current bushing and
installing a new one.  
Here is a side view of the finished
repair.  The repair allows OEM parts
and hardware to be used.  Factory
and after market seed boots,
mounting bolts, and springs can be
reinstalled without modification.
Here is a OEM mounting bolt in the
bushing to compare to the first
picture in this series.  The bolt now
has 0.010 clearance through the
length of the bushing.  It is plenty of
clearance for normal operation of the
drill.  The bushing itself is aircraft
grade heat treated chromoly
seamless tubing.  Extra bushings are
available individually.  
To order your seed drill repair kit, order the base kit for the series of your machine.  Your series is the last
two digits in the model number of your drill.  Then, order one bushing per row unit on your machine.  

50 Series repair kit...................................PN 75025....................$295.00
60/90 Series repair kit..............................PN 60925....................$295.00
50 Series bushing (one per row)................PN 75030.......................$12.50
60/90 Series bushing (one per row)..........PN 60925.......................$12.50

Call to place your order or for any questions....252-426-9676
or email...craig@craftairservices.com

For more information, please visit:
www.jddrillfix.com