Unloading & assembly – MacDon 974 FlexDraper User Manual

Page 90

Form # 147083

Issue 01/07

UNLOADING & ASSEMBLY

974 FLEX HEADER: WING FLOAT SET-UP AND PRE-DELIVERY CHECK

8. With adapter float spring lockout disengaged, wing

float lock pins engaged, and cutterbar
approximately 6” (150 mm) above ground, adjust
wing bell crank linkage to balance wings, as
follows:
NOTE: Fine tuning adjustment of wing bell crank
will be detailed in Step 9.

a) Adjust left wing:

• One of the two pins in the left wing float lock

will be tight and one will be loose.

• Loosen nut (N) inside bell crank.
• Adjust bell crank with nuts (P) until both wing

float lock pins are loose.

• Disengage pins in left wing float lock. Float for

right wing remains locked.

• To increase force on divider (making it harder

to pull up), adjust nuts (P) to move top link pin
(M) up. To decrease force on divider (making it
easier to pull up), adjust nuts (P) to move top
link pin (M) down.

• If nuts (P) are difficult to turn, fully lower feeder

house to reduce load on linkage. Return to 6”
(150 mm) cutterbar height when complete.

• Tighten nut (N).

b) Adjust right wing:

• Engage float lock pins in left wing.

Disengage pins in right wing float lock.

• Repeat bell crank adjustment above for right

wing.

c) Disengage pins in left wing float lock and

recheck float balance both sides. Readjust as
necessary.

Continued next page….

ADJUST BELL CRANK TO POSITION