SECTION 1 BASIC LAYOUT AND ASSEMBLY; MODEL 74

Fig. 1

1a. Lay out all bars behind implements to determine approximate mounting locations on the frame. Position mounting brackets (A) on the implement frame so that they line up with spaces between teeth on a bar. Brackets may be positioned one, two or three teeth in from the end of a bar and may be different on both ends.

Mounting brackets (A) should be spaced as close as possible to the number of teeth between them multiplied by 14”. (Example: mounting brackets should be spread at 70” for a section with 5 teeth between brackets). A variation of 3” either way is allowable if interference prevents exact positioning.

Secure mounting brackets (A) to frame using a mounting plate and four 5/8” x 6” bolts per bracket.

1b. Attach carrier arms (C) to mounting brackets using 3/4” x 3-1/2” bolts and locknuts. Tighten locknut so arm can still pivot freely.

Fig. 2.

2a. Attach support rod assemblies (D) to mounting bracket and carrier arms. Install cast swivel with long tube on top and attach to carrier arm using a 3/4 x 3-1/2” bolt and locknut. IMPORTANT: Do not overtighten locknut on 3/4” x 3-1/2” pivot bolt. Tighten locknut so cast swivel can still pivot freely.

2b. Attach other end of support rod to mounting bracket using a 3/4” x 3-1/2” bolt and locknut. Install in middle height adjustment hole for average implement. At this time, also install 7/16” x 1” set screw with 7/16” hex nut into lock collars.

Fig. 3.

3a. Attach side plates to carrier arms using two 1/2 x 3” bolts per arm (use a heavy flat washer on each side). Mount in front, middle or rear set of holes depending on desired clearance between front harrow bar and implement. Place in second hole up from bottom for initial level adjustment.

If mounting brackets are spaced at the calculated distance, mount side plates on the same side of lift arms. If spaced more than the calculated distance, mount both side plates on the inside lift arms and if mounted brackets are spaced less than the calculated dis- tance, mount both side plates on the outside of the lift arms. Spacer tubes 1-1/2” thick are available if needed. Order PN 8H1502.

Fig. 4.

4a. Attach bars to underside of side plates using round U-bolts. Install nuts on underside of flange as well as on top so U-bolts are solid but pipe is free to turn.

4b. All sections require two sets of lever linkages (second set optional on 3’6” and 4’8” sections). Mount levers as close as possible to side plates and on the outside if possible to prevent excessive torsion of the bars. For proper alignment of levers, each bar must have the same number of teeth extending past the side plates. See the following figures for correct lever linkage assembly of 2, 3 & 4 bar units.

4c. Attach pipe clamps on one end of rear bar. Attach one of each side of side plate (see inset Fib. 4).

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