MacDon 5020 Mower Conditioner - Manual (Page 55)

55
MAINTENANCE/SERVICE
AUGER AND AUGER DRIVE (continued)
Auger Drive Chain Lubrication
Lubricate auger drive chain daily with lightweight
oil (SAE 30).
Auger Drive Chain Tension
To tighten auger drive chain:
1. Loosen idler sprocket mounting bolt (K).
2. Using a punch or screwdriver in pry holes (L),
move sprocket upward until deflection at (M) is
1/4 inch (6 mm).
3. Tighten bolt (K).
Auger Drive Belt Tension
IMPORTANT: To prolong drive life, do not over-
tighten belt. Belt slippage is used to protect the
auger in an overload situation.
NOTE: Minor belt tension adjustments may be
made without affecting chain tension. For major
adjustments, like after repositioning reel or auger,
adjust chain tension before belt tension.
To adjust auger drive belt tension:
1. Loosen nuts (P) at auger drive arm.
2. Back off jam nut (R), then turn adjuster bolt
(access under end panel) until a force of:
NEW BELT - 20 lbs. (80 N)
USED BELT - 12 lbs. (55 N)
deflects belt 1/4 in. (6 mm) at mid-span.
3. Tighten jam nut (R) against frame to secure the
position, then tighten nuts (P).
4. Re-adjust tension of a new belt after about 5
hours of operation to used belt specifications.
AUGER DRIVE CHAIN
TENSION ADJUSTMENT
K
L
M
AUGER DRIVE BELT
TENSION ADJUSTMENT
P
R