Great Plains NP30A 30-foot Operator Manual - Manual (Page 35)

Great Plains Manufacturing, Inc. Table of Contents Index Preparation and Setup 31
2014-05-20 Table of Contents Index 407-502M
2- and 3-Point Hitching
The NP30A or NP40A is engineered to be used with
Category II or Category III tractors.
Refer to Figure 7
This applicator is factory set for Category III tractors.
Category II requires an optional hitch pin kit
(see
page 131).
In addition, the following bushings (not supplied by Great
Plains) may be needed to fit your quick hitch or tractor’s
3-point arms:
• Upper Link (full 3-point only):
1 inch (25.4 mm) I.D. × 1 1 ⁄
4
inch (31.8 mm) O.D.
• Lower Links:
1
1 ⁄
8
inch (28.6 mm) I.D. × 1 7 ⁄
16
in (36.5 mm) O.D.
1. Adjust tractor lower links to maximize lifting height.
2. Normally the lower arms engage pins in the lower
holes
of the applicator’s three point lugs. You may
use the upper holes if necessary.
3. Set tractor sway blocks to minimize side sway. Set
tractor hitch lift control to Float.
4. Back tractor up to applicator. Align lower links with
the lower hitch clevis on applicator. Adjust hitch
bushings and spacers supplied with applicator
according to the category of your tractor. Lock pins in
place.
5. Set hitch for depth control mode.
Full 3-Point Hitching
For 2-Point hitching (3-Point semi-mounted), continue at
“Electrical Hookup” (next topic).
Determine which top holes to use:
Attach tractor top link to applicator upper hitch clevis.
For intended results, the frame must be level side-to-side
and front-to-back. This must be done in the field, and
cannot normally be established at first hitching. See
“Leveling Applicator” on page 37.
Upper Category III
Middle Category III Quick Hitch
Category III
Category II
a
a. Requires an optional hitch pin kit (page 131)
Lower Category II
a
Quick Hitch
Figure 7
3-Point Hitch Pins
21673
U
D
L R
Category III
Category II
1
2
Crushing Hazard:
Do not stand or place any body part between
applicator and moving tractor. You may be
severely injured or killed by being crushed
between the tractor and applicator. Stop tractor engine and set
parking brake before attaching cables and hoses.
1
2
Figure 8
3-Point Top Pins
31078
U
D
B F
3
4
5
3
4
5