Bush Hog GHM 1800, GHM 700, GHM 1900, GHM 900, GHM 800 Cutter BAR Installation, Cutter BAR Removal

STANDARD CROP DIVIDER (Figure 4-6) Reattach	4-8 CUTTER BAR INSTALLATION
the cap and cutter to the crop divider by reinstalling	A. Install gearbox into frame, securing with front
the four(4) capscrews through the top of crop divider
and tightening securely.	mounting lug and two bolts. (Figure 4-10)
OPTIONAL CROP DIVIDER (Figure 4-7) Tilt cap	B. Install sheave (Figure 4-11) onto gearbox input
	shaft and key aligning with driver sheave. Alternately
sideways and insert cap assembly into the top of the	tighten the three retaining bolts.
crop divider. Insert pointed end of threaded rod into	C. Install matched set of belts (Figure 4-11) Tighten
the center hole on the end of the round output shaft.	adjusting nut until belts deflect 1/2” with 10 pounds of
Tighten cap by turning threaded rod clockwise so cap	force applied. Rotate belt pulleys 6 complete revolu-
moves up on threaded rod until it fits tight into taper	tions to seat the belts into the pulleys. Tighten
of crop divider. Tighten jam nut. Snap on hub cap.	adjusting nut a second time until the belts deflect 1/2 “
4-7 CUTTER BAR REMOVAL	with 10 pounds of force applied. Tighten jam nut on
	adjusting nut and tighten assembly pivot bolt.
A. Lower cutter bar to rest on the ground.	D. Install belt shield rear cover. Figure 4-9)
	E. Attach shield and curtain/beam assembly to
B. Remove pin (Figure 4-9) and disconnect cylin-	gearbox/cutter bar assembly. (Figure 4-9)
der from cylinder lug. For models with cutter bar	F. Pin cylinder to cylinder lug. For models with cut-
helper spring only, disconnect helper spring assem-	ter bar helper spring assembly, attach spring assembly
bly from curtain/beam assembly.	to curtain/beam assembly. (Figure 4-9)
C. Detach shield and curtain/beam assembly

from the gearbox/cutter bar assembly. (Figure 4-9)
	Figure 4-10
D. Remove belt shield rear cover. (Figure 4-9)
E. Loosen tension then remove the belts.
F. Remove three bolts securing sheave to gear-
box input shaft. Install bolts in adjacent holes and
progressively tighten to remove sheave from tapered
hub. (Figure 4-11
G. Remove the two bolts securing the front
mounting lug (Figure 4-10). Remove front mounting
lug. Detach gearbox/cutter bar assembly from the
main beam/hitch frame assembly.

Two Bolts Securing

Front Mounting Lug

Figure 4-9 Helper Spring

Curtain/Beam

Assembly Shield

Belt Shield Cylinder Pin

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