Yetter Double Hub No-Till Coulter - Manual (Page 6)

6
INSTALLATION
1. Assemble 3/8 x 2-1/2" roll pin into hole closest to end of 1-1/2" diameter shank, leaving approximately equal
amount protruding out each side. For 12-5/8" shank, end without hole is upper end.
2. Insert lock collar into pivot casting and slide shank up through casting and lock collar. If you wish to lock
coulter from pivoting, slide roll pin into slots in casting. If you wish to let coulter pivot, do not align roll pin
with casting slots, but slide shank up till roll pin contacts casting surface. Install and tighten 5/8 x 1"
setscrew in lock collar to 110ft. lb.
3. Mount 18" coulter blade loosely to hub using four 1/2 x 1-1/2" carriage bolts, lockwashers and nuts.
4. Mount fertilizer injector to injection arm with a 1/2 x 1-3/4" bolt gr. 5 in the bottom hole, 1/2 x 1-3/4" flathead
bolt, gr. 8 in the top hole, lockwashers and nuts. Place shims between injector and arm as needed to align
injector with blade. See Parts Identification on Page 9 for more detail.
5. Center blade on hub by rotating blade and watching clearance between injector and blade. Slide blade on
hub as required until the blade runs concentric, no run out on diameter. Tighten four 1/2" nuts to 120ft. lb.
The disc blade must run concentric.
Repeat Step 3-5 for second blade & injector.
6. Assemble clamp components loosely to planter front bar as shown in parts view of appropriate clamp. The
clamp setscrew must mount away from spring, see Page 10 or 11 for more detail.
7. Position coulter clamps either toward the inside or outside of the planter openers on each side of the planter
to equalize draft. Tighten four 1/2" nuts to secure the clamps.
8. Install coulters on planter by inserting shank up through clamps and tightening 5/8 x 1" setscrews.
9. Install 5/16 x 2-1/2" cotter pins in all vertical 1-1/2" diameter shanks. This cotter pin prevents loss of coulter
should the clamp setscrews work loose. Cotter pin can be installed between clamp castings or above top
casting depending on shank.
10. If you have elected to let coulter swivel, set lock collar to allow swivel in one or both directions as required.
If you have elected to hold coulter rigid, set coulter straight with the direction of travel. Tighten setscrew to
110ft. lb.
11. Set spring tension by adjusting 3/4" locknut till 1/8" of threads are exposed above the nut. Tighten 3/4"
locknut if greater spring pre-load is required.
12. Grease four fittings on each coulter before operation. The hub bearings should be greased only a few times
each season. Do not forget the lower parallel arm grease zerk.
NOTE: Check clearance of injectors and coulters. Coulters must be mounted so blade can always flex up and
clear drive shaft. Loosen and swivel hydraulic hoses up and out of the way to
provide clearance when
coulter flexes.