MacDon CA25 OM - Manual (Page 152)

SECTION 8. MAINTENANCE AND SERVICING
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150
Revision B
8.11.4 Draper Roller Maintenance
The draper rollers have non-greaseable
bearings.
The external seal should be checked every
200 hours (and more frequently in sandy
conditions) to obtain the maximum bearing life.
DANGER
Engage header lift cylinder stops and reel
props before working under header or
reel.
8.11.4.1 Drive Roller Removal
a. Raise header and reel and engage cylinder and
reel stops.
b. On deck shift headers, position deck so drive
roller is easily accessible.
c. Loosen and uncouple draper. Refer to Section
8.11.2 Replacing Split Draper.
d. Loosen the two set screws in access hole (A) in
the drive roller hub at motor end.
e. Remove the four bolts (B) that hold hydraulic
motor to arm, and pull motor off roller.
f. Remove bolt (C) at forward end of roller, and
remove roller from deck.
8.11.4.2 Drive Roller Installation
DANGER
Engage header lift cylinder stops and reel
props before working under header or
reel.
Refer to illustrations opposite.
a. Position roller in deck arms, and secure forward
end with bolt (C) and washer. Do not tighten at
this time.
b. Apply SAE Multi-Purpose grease to motor shaft,
locate motor on roller arm, and engage motor
shaft into roller.
c. Secure motor with shoulder bolts (B), and
tighten. The shoulder bolts allow clearance
between the motor and arm. The motor is NOT
secured tightly to arm.
d. Push roller against shoulder on motor shaft,
and hand-tighten the two set screws (A).
Torque set screws to 20 ft·lbf (27 N·m).
e. Torque bolt (C) to 70 ft·lbf (95 N·m).
f. Re-attach draper. Refer to Section 8.11.2
Replacing Split Draper.
g. Adjust draper tension. Refer to Section 8.11.1
Header Draper Tension Adjustment.
h. Re-adjust hydraulic motor hoses (if required),
and tighten hose clamps.
i. Run machine, and adjust tracking if required.
Section 8.11.3 Header Draper Alignment.
C
A
B
B