MacDon A40-D - Manual (Page 146)

SECTION 7 MAINTENANCE AND SERVICING
169000 / 169040
144
Revision E
7.9 REEL AND REEL DRIVE: A30-S,
A30-D
CAUTION
To avoid personal injury, before servicing
header/mower conditioner or opening drive
covers, follow procedures in Section 7.1
PREPARATION FOR SERVICING.
7.9.1 Reel Drive Chain: A30-S, A30-D
7.9.1.1 Tension
NOTE
For major adjustments, such as after re-
positioning reel or auger, adjust belt
tension before chain tension.
Adjust reel drive chain (A) tension as follows:
a. Open shield on header RH side.
b. Loosen nut (B) on idler sprocket.
c. Loosen jam nut on adjuster bolt (C), and back
off.
d. To increase tension, turn adjuster bolt (C) to
move idler sprocket downward until total chain
slack at (A) is 1/4 in. (6 mm).
e. Tighten jam nut at (C) and nut (B), and re-check
tension.
f. Close shield before engaging header.
7.9.1.2 Removal
Remove reel drive chain (A) as follows:
a. Open shield on header RH side.
b. Remove reel drive belt (D) from pulley (E).
Refer to Section 7.9.2 Reel Drive Belts: A30-S,
A30-D.
c. Loosen nut (B) on idler sprocket.
d. Loosen jam nut on adjuster bolt (C) and back
off.
e. Turn adjuster bolt (C) to loosen chain.
f. Remove chain from sprockets.
7.9.1.3 Installation
Install reel drive chain (A) as follows:
a. Position chain (A) around sprockets as shown.
b. Install and tighten reel drive belts (D). Refer to
Section 7.9.2 Reel Drive Belts: A30-S, A30-D.
c. Turn adjuster bolt (C) to move idler sprocket
downward until total chain slack at (A) is 1/4 in.
(6 mm).
d. Rotate auger, and check chain for slack at
tightest point. Re-adjust position of idler
sprocket to achieve required slack.
e. Tighten jam nut at (C) and nut (B), and re-check
tension.
f. Close shield before engaging header.
B
A
C
E
D
B
A
C