Feeder House Top Shaft Sprockets

Depending on the crops being harvested, check the upper shaft sprockets for wear.

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If these sprockets are worn past specification (A), the shaft with the sprockets can be reversed for additional wear.

Specification

Sprockets (A) -Distance 12 mm (1/2 in.)

To reverse sprockets:

Lower feeder house and remove top door (B).

Pull lever (C) and lower bottom feeder house door.


A-Sprocket Wear, 12 mm (1/2 In.)
B-Top Door
C-Lever

H39620
H54659
H54660

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Remove right-hand side drive chain (A).

Remove clutch (B) and pipe spacer.

Relieve tension on feeder house chain with eyebolt (C) and remove chain.


A-Right-Hand Side Drive Chain
B-Clutch
C-Eyebolt

H54662
H54663

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H58748
 

A-Set Screws

B-Outer Sprockets

C-Bolts

  

Loosen set screws (A) in sprockets.

Move outer sprockets (B) inward away from the bearing housings about one inch.

Remove bolts (C) from left-hand bearing housing.

Pull left-hand bearing housing away from mount and lower left-hand side of shaft.

Pull shaft with bearing housing and sprockets away from right-hand side bearing.

Reverse or replace sprockets.

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H58749
 

A-Left-Hand Side Bearing Housing

  

NOTE: When reversing sprockets worn on one side only, the right-hand side and left-hand side sprockets change places and the inner sprocket is reversed.

Install left-hand side bearing housing (A) on end of shaft.

Install round end of shaft into right-hand side bearing and swing left-hand side up to align bearing housing with bearing mount. Attach bearing housing to mount with cap screws. Torque cap screws to specification

Specification

Cap Screws -Torque 120 N·m (88 lb-ft)

Assemble pipe spacer, clutch, flat washer and flange nut to top shaft. Tighten nut to specification

Install lock nut against flange nut and tighten to specification

Specification

Flange and Lock Nuts -Torque  350 N·m (258 lb-ft)
.

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H58750

Position center of sprocket teeth 56 mm (2-1/4 in.) from bearing housing.

Position remaining sprockets 603 mm (23-3/4 in.) apart.

Specification

Center Sprocket -Distance 56 mm (2-1/4 in)
Remaining Sprockets -Distance 603 mm (23-3/4 in)

Tighten set screw in sprocket to specification.

Specification

Set Screw -Torque 50 N·m (37 lb-ft)

Install conveyor chain and right-hand side drive chain.

Install feeder house top door and close bottom feeder house door.

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