MacDon 974 FlexDraper - Manual (Page 60)

Form # 147083 Issue 01/07 58
MAINTENANCE/SERVICE
REEL AND REEL DRIVE (continued)
Centering the Reel – 21’ & 25’ Headers
Center the reel between the header end sheets by
adjusting the reel support arm brace (C).
To adjust:
1. Loosen two bolts (D) at front of brace.
2. Position brace (C) as required to center reel.
3. Tighten bolts (D) to 160 ft.lbs. (215 N·m).
Centering the Reels – 30’, 36’ & 39’ Headers
Center the reels between the header end sheets by
adjusting the center reel support arm.
To adjust:
1. Holding bolt head (E) with a wrench, loosen two
nuts at (F), both sides of center arm.
2. Move center support arm laterally as required to
center reels.
3. Tighten nuts (F).
NOTE: For 974 Flex Headers, proper centering of the
reel is critical. Check the horizontal position of the reel
in the header with cutterbar in full smile position: Lower
cutterbar onto two 6” (150 mm) blocks placed at each
divider.
Reel Drive Chain Tension
Check the reel drive chain tension every 100 hours or
annually. In extreme crop conditions like heavy forage
or rice, check tension more often.
To adjust:
1. Remove drive cover (A).
2. Loosen four bolts (B).
3. Slide motor away from reel shaft until a force of 11
lbs. (50 N) deflects chain 1/8 inch (3 mm) at mid-
span.
4. Tighten bolts (B).
Reel Drive Chain Lubrication
Lubricate full length of chain every 100 hours or
annually with Multi-Purpose Grease.
Removal of Reel Drive Shaft
Tapped holes are provided in reel drive shaft mounting
flange for pulling shaft out of reel tube.
D
C
REEL CENTERING ADJUSTMENT – 21’ & 25’
REEL DRIVE CHAIN
REEL DRIVE CHAIN TENSION
A
B
REEL CENTERING ADJUSTMENT – 30’, 36’ & 39’
E
F
F