MacDon 5020 Mower Conditioner - Manual (Page 52)

52
MAINTENANCE/SERVICE
REEL AND REEL DRIVE
Reel Drive Chain Lubrication
Lubricate chain daily with a light weight oil (SAE 30).
Apply oil to upper edge of lower chain span (A).
Reel Drive Belt Tension
IMPORTANT: To prolong drive life, do not over-
tighten belt. Belt slippage is used to protect the
reel in an overload situation.
To adjust reel drive belt tension:
1. Loosen jam nut (A) on adjuster bolt and two
flange nuts (B) at reel drive arm.
2. To tighten belt, tighten adjuster bolt (C) 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 (F).
3. Tighten jam nut (A) and two flange nuts (B).
4. Re-adjust tension of a new belt after about 5
hours of operation to used belt specifications.
5. Check reel drive chain tension and adjust if
necessary. See below.
Reel Drive Chain Tension
NOTE: For major adjustments, like after
repositioning reel or auger, adjust belt tension
before chain tension.
To adjust reel drive chain tension:
1. Loosen nut (D) and back off nut (E).
2. To increase tension, turn nut (F) to move idler
sprocket downward until total chain slack at
(G) is 1/2 in. (13 mm).
3. Tighten nuts (D) and (E).
Reel Tines
Keep reel tines in good condition. Straighten or
replace as required.
OIL REEL DRIVE CHAIN
A
REEL DRIVE BELT TENSION ADJUSTMENT
A
B
C
F
REEL DRIVE CHAIN ADJUSTMENT
D E
F
G