Yetter 3500 Series Toolbar Rotary Hoe - Manual (Page 9)

9
3500 SERIES
HYDRAULIC ASSEMBLY
ASSEMBLE HINGE LEVERS AS FOLLOWS
1. Drive a 3/8” x 2-1/2” roll pin into one end of each of 4 hinge pins.
2. On one wing of hoe assemble 1” washer on hinge pin, push pin thru near hole in hinge,
insert hinge lever, push pin thru other hole in hinge, assemble another 1” washer and roll
pin.
3. On other end of hinge lever assemble a 1” washer on hinge pin, put thru a wheel, push
rod clevis of a hydraulic cylinder, hinge lever, other side of clevis, wheel, washer, and
secure with another 3/8” roll pin.
4. On the butt end of cylinder remove 1 hairpin clip and the clevis pin, extend the cylinder
and fasten to the cylinder bracket with the clevis pin and the hairpin clip. Check spacing
between hinge lever and hinge bushing; (opposite zerk) and set to 1/8” to 3/16” spacing
by removing clevis pin and turning cylinder into or out of the rod end clevis. Tighten
clevis-clamping bolt.
5. Repeat 2, 3, and 4 for the remaining wing.
6. Lubricate the o-ring on each of the restricted 90-degree fittings and install into the cylinder
ports. DO NOT OVER TIGHTEN AND DISTORT THE METAL BACK-UP WASHER.
Position the fitting by turning it out (counter clockwise) to a maximum of one complete
turn and tighten the jam-nut.
7. There are four hose sizes as follows:
1. ¼” hose (short) 1 pc.
2. ¼” hose (medium) 2 pcs.
3. ¼” hose (long) 1 pc.
4. 3/8” hose, 2 pcs.
8. Connect a short and medium hose on opposite arms of a “T” fitting.
9. Connect a medium and long hose on opposite arms of a second “T”.
10. Position the short hose assembly on the toolbar with “T” on the operators left of the hitch
assembly, position the long hose assembly in the same manner, connect short hose ends
to the inner ports, the longer assembly to outer ports.
11. Connect the 4ft. 3/8” hoses to the remaining “T” ports and tighten ALL connections.
Adapters are provided for the hoses to connect to standard ¾-16 straight thread quick
coupler tips such as Case-IH part no. 1285718* or Deere part no. AR945222.
12. Using the cable ties furnished, tie the outer port hoses to the lower ends of each cylinder
and the hose to the toolbar on each side of the “T”s and at 2 to 3 foot intervals between.
13. IMPORTANT: Be sure to cycle the hydraulic cylinders before attaching them to the
folding wings. This removes air from the hoses and insures smooth wing operation.
CAUTION
STAND CLEAR OF FOLDING WINGS!