MacDon CA25 OM - Manual (Page 155)

SECTION 8. MAINTENANCE AND SERVICING
169593
153
Revision B
8.12 REEL AND REEL DRIVE
CAUTION
To avoid personal injury, before servicing
header or opening drive covers, follow
procedures in Section 8.1 PREPARATION
FOR SERVICING.
8.12.1 Reel Clearance to Cutterbar
The finger to guard/cutterbar clearances with
reel fully lowered varies with header width, and
are as follows. See illustration opposite.
HEADER
(FT)
‘X’ +/- .12 in. (3 mm) @ REEL ENDS
SINGLE REEL DOUBLE REEL
20 FT
3/4 in.
(20mm)
---
25 FT
1 in.
(25 mm)
30 FT
1-3/4 in.
(45 mm)
3/4 in. (20 mm)
35 FT
2-3/8 in.
(60 mm)
40 FT
---
45 FT
8.12.1.1 Clearance Measurement
CAUTION
Engage header lift cylinder stops before
working under header.
a. Raise header, and place a 6 in. (150 mm) block
under each inboard header leg.
b. Lower header onto blocks. Fully lower the reel.
c. Adjust fore-aft reel position so that back end of
cam disc is approximately between 4 and 5 on
the arm decal.
d. Shut down combine. Remove key from ignition.
e. Measure clearance at ends of each reel.
NOTE
The reel has been adjusted at the
factory to provide more clearance at
the center of the reel than at the ends
(‘frown’) to compensate for reel
flexing.
f. Check all possible points of contact between
points ‘Y’ and ‘Z’. Depending on reel fore-aft
position, minimum clearance can occur at guard
tine, hold-down, or cutterbar.
(continued next page)
X
Z
Y
6 INCH BLOCKS LEVEL GROUND
TAKE MEASUREMENTS 4 PLACES
DOUBLE REEL
TAKE MEASUREMENTS 2 PLACES
SINGLE REEL
6 INCH BLOCKS LEVEL GROUND