MacDon R113 - Page 141

214713 133 Revision A
1014709
B
A
C
D
Figure 7.11: Lift Cylinder Lock-Out Valve, Jam
Nut, and Adjuster Bolt
2. Raise the disc mower fully. Shut off the engine, and
remove the key.
3. Close lift cylinder lock-out valve (A) on each lift cylinder
by turning the handle to the closed position (90 degree
angle to the hose).
4. Loosen jam nut (B) away from the spring.
5. Turn adjuster bolt (C) to achieve the recommended
measurement (D) for the conditioner type. Refer to
Table 7.1, page 133.
• Turn bolt clockwise (towards spring) to
increase float.
• Turn bolt counterclockwise (away from spring) to
decrease float.
6. Tighten jam nut (B) against spring.
Table 7.1 Float Setting Starting Point
Header
Size
Conditioner
Type
Length of Exposed
Thread
None
280–290 mm
(11 – 11-5/32 in.)
4.0 m
(13 ft.)
Roll
120–130 mm
(4-3/4 – 5-1/8 in.)
Finger
Right side:
145–155 mm
(5-3/4 – 6-1/8 in.)
Finger
Left side:
15–125 mm
(4-1/2 – 4-15/16 in.)
None
230–240 mm
(9 – 9-1/2 in.)
4.9 m
(16 ft.)
Roll
70–80 mm
(2-3/4 – 3-1/8 in.)
Finger
Right side:
95–105 mm
(3-3/4 – 4-1/8 in.)
Finger
Left side:
65–75 mm
(2-1/2 – 3 in.)
7. Measure the length of exposed thread (D) on the float
spring tension bolts.
NOTE:
Float settings indicated in the table at right are starting
point settings only. Float force should still be checked
with disc mower float and cutting angle set as planned
for use in the field.
8. Repeat Steps 4, page 133 to 7, page 133 on the
opposite side of the disc mower.
9. Open lift cylinder lock-out valve (A) on each lift cylinder
by turning the handle to the open position (in line with
the hose).
10. To check float, lower the disc mower to cutting position,
grasp the front corner of mower, and lift; the weight
should feel like approximately 45 kg (100 lb.) at
both ends.
11. Repeat adjustment procedures until the desired weight
is achieved at both ends of the disc mower.
PERFORMING PREDELIVERY CHECKS