Clevis hitch, Category iii hitch – Great Plains 7336 DH Operator Manual User Manual
Page 19

Great Plains Manufacturing, Inc.
Preparation and Setup
15
2014-06-30
556-235M
Clean all hydraulic couplings and hook to tractor.
Clevis Hitch
Refer to Figure 6
The base hitch must be upright (with the recessed notch
on the bottom) for this configuration. this places the
tongue weight on the base hitch, and not the clevis.
.
10. Select one each:
890-798C HITCH CLEVIS
802-487C HHCS 3/4-10X6 GR8
803-367C NUT HEX TOP LOCK 3/4-10PLT
11. With the square-shouldered end of the clevis
up,
fully seat the clevis in the upright base hitch
Insert the Grade 8 bolt
from below. Secure with
lock nut
.
Hitch Failure Hazard:
Install the hitch base and assemble the clevis parts as shown.
Incorrect installation or assembly may result in failure of the
clevis bolt, leading to hitch failure. This could result in a
serious highway assident or severe machine damage.
Category III Hitch
The base hitch
must be inverted (with the recessed
notch on the top) for this configuration. Set the
V-block
to allow some vertical articulation of the draw
bar pin. Always use at least one cushion
.
12. Select one of each
PPI-302V TOP PLATE - CAT 3
PPI-203VR V-BLOCK
802-383C HHCS 3/4-10X3 GR5
and two:
PPI-205H CUSHION
13. Set the cushions inside the hitch recess, just forward
of the vertical bolt hole. Postion the V-block
forward of the cushions and check the size of the
resulting pinning hole. Remove a cushion
if
needed.
14. Add the top plate
. Secure from below with Grade
5 bolt
.
Figure 6
Configure Hitch
31740
43410
31741
18
11
17
16
15
12
14
13
14
14
12
13
14
18
12
13
15
16
17
15
11
16
15
16
17
11