Draper Roller Maintenance. MacDon D50 & D60

SECTION 8. MAINTENANCE AND SERVICING

The draper rollers have non-greaseable bearings.

The external seal should be checked every 200 hours (or 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.

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

8.8.2 Replacing Split Draper.

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 bolts (B), and tighten. 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 8.8.2

Replacing Split Draper. g. Adjust draper tension. Refer to Section 8.8.1

Draper Tension Adjustment. h. Re-adjust hydraulic motor hoses if required, and tighten hose clamps. i. Run machine, and adjust tracking if required.

Section 8.8.4 Draper Alignment.

A

B d. Loosen the two set screws in access hole (A) in the drive roller hub at motor end. e. Remove the two bolts (B) that hold hydraulic motor to arm, and pull motor off roller.

C f. Remove bolt (C) at forward end of roller, and remove roller from deck.

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Revision B

8.8.5.3 Idler Roller Removal

DANGER

Engage header lift cylinder stops and reel props before working under header or reel.

a. Raise header and reel, and engage cylinder and reel stops. b. On deck shift headers, position deck so idler roller is easily accessible. c. Loosen and uncouple draper. Refer to Section

8.8.2.1 Draper Removal.

B

SECTION 8. MAINTENANCE AND SERVICING

A

8.8.5.4 Idler Roller Installation

See illustration opposite. a. Position stub shaft in idler roller in forward arm

(B) on deck. b. Push on roller to deflect forward arm slightly so that stub shaft at rear of roller can be slipped into rear arm (C). c. Install bolts (A) with washers, and torque to

70 ft·lbf (93 N·m). d. Re-attach draper. Refer to Section 8.8.2

Replacing Split Draper. e. Adjust draper tension. Refer to Section 8.8.1

Draper Tension Adjustment. f. Run machine and adjust tracking if required.

Section 8.8.4 Draper Alignment.

8.8.5.5 Draper Roller Bearing/Seal

Replacement

NOTE

Seal (D) not included in D50 header.

a. Remove roller assembly. Refer to Section 8.8.5.1

Drive Roller Removal or Section 8.8.5.3 Idler

Roller Removal.

C

F

E

D

A d. Remove bolts (A) and washer at ends of idler roller. e. Spread roller arms (B) and (C), and remove roller. b. Remove bearing assembly (E) and seal (D) from roller tube (F) as follows:

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1. Attach a slide hammer to threaded shaft.

2. Tap out the bearing assembly. c. Clean inside of roller tube (F). Check tube for wear or damage. Replace if necessary.

(continued next page)

Revision B

SECTION 8. MAINTENANCE AND SERVICING

d. Install bearing and seal as follows:

1. Install bearing assembly (E) into roller by pushing on outer race of bearing. The bearing is fully positioned when the 0.55 inch

(14 mm) dimension is achieved. See illustration below.

E

0.55 - 0.59 in.

(14 - 15 mm)

0.12 - 0.16 in.

(3 - 4 mm)

D

2. Apply grease in front of bearing. Refer to

Section 8.3.4 Recommended Fluids and

Lubricants. e. Install seal (D) as follows:

1. Locate seal at roller opening, and position a flat washer (1.0 inch I.D. X 2.0 in. O.D.) on seal.

2. Using a suitable socket to locate on the washer, tap seal into roller opening until it seats on the bearing assembly. The seal is fully positioned when the 0.12 in. (3 mm) dimension is achieved. See illustration above. f. Re-install roller assembly. Refer to Section 8.8.5

Draper Roller Maintenance.

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Revision B