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Important: Make sure the grease groove in each roller
mount aligns with the grease hole in each end of the
roller shaft. To help align the groove and hole, there is
also an alignment mark on one end of the roller shaft.
Separating the Cutting Decks
from the Traction Unit
1. Position the machine on a level surface, lower the
cutting decks to the floor, shut the engine off, and
engage the parking brake.
2. Disconnect and remove the hydraulic motor from
the deck
(Figure
10). Cover the top of the spindle to
prevent contamination.
1. Motor mounting screws
3. Remove the lynch pin or retaining nut (GM 4700 only)
securing the deck carrier frame to the lift arm pivot
pin
(Figure
11).
G011349
Figure 9
Figure 10
1. Lynch pin
4. Roll the cutting deck away from the traction unit.
Mounting the Cutting Decks to
the Traction Unit
1. Position machine on a level surface and shut engine off.
2. Move cutting deck into position in front of traction
unit.
3. Slide deck carrier frame onto lift arm pivot pin. Secure
with lynch pin or retaining nut (GM 4700 only)
11).
4. Install the hydraulic motor to the deck
Make sure that the O-ring is in position and not
damaged.
5. Grease the spindle.
Servicing the Blade Plane
The rotary deck comes from the factory preset at 2.00 inch
(5 cm) height-of-cut and blade rake of 0.310 inch (7.9 mm).
The left-hand and right-hand heights are also preset to within
±0.030 inch (0.7 mm) of the other.
The cutting deck is designed to withstand blade impacts
without deformation of the chamber. If a solid object is
struck, inspect the blade for damage and the blade plane for
accuracy.
Inspecting the Blade Plane
1. Remove the hydraulic motor from the cutting deck and
remove the cutting deck from the tractor.
2. Use a hoist (or minimum of two people) and place the
cutting deck on a flat table.
3. Mark one end of the blade with a paint pen or marker.
Use this end of the blade to check all heights.
4. Position the cutting edge of the marked end of the
blade at 12 o'clock (straight ahead in the direction of
10
Figure 11
2. Lift arm pivot pin
(Figure
(Figure
10).
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