Reverse Feeder House Top Shaft Sprockets

After 1000 hours, depending on the crops being harvested, check the upper shaft sprockets for wear.

If these sprockets are worn past 12 mm (1/2 in.) (A), sprockets can be reversed for additional wear.

To reverse sprockets:


A-Dimension 12 mm (1/2 in.)

H39620

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Lower feeder house, remove nuts (A) and top door (B).


A-Nuts
B-Top Door

H51809

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


A-Lever

H51849

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Open front shield.

Loosen nut (A) and push sprocket rearward.

Loosen nut (B) and move sprocket to upper position


A-Nut
B-Nut

H51805

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Remove right-hand side drive chain (A).

Remove nuts (B) holding cover and remove clutch (C) and pipe spacers.

NOTE: To ease removal and installation of chain, tie a rope onto the conveyer chain (D) to control chain.

Relieve tension on feeder house conveyor chain and remove chain (D).


A-Right-Hand Side Drive Chain
B-Nuts
C-Clutch
D-Chain

H51850
H51851

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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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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 (9650 has two inner sprockets).

To install new sprockets or to reverse sprockets:

Install sprockets onto shaft.

H55868

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H58749
 

A-Left-Hand Side Bearing Housing

  

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

Install opposite 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. Tighten cap screws to specification.

Specification

Bearing Housing Cap Screws -Torque 120 N·m (88 lb-ft)

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Assemble pipe spacer (A), clutch, outer spacer, flat washer and nut (B) to top shaft. Tighten nut to specification.

Specification

Nut -Torque 350 N·m (258 lb-ft)

Install clutch lock nut (C) against nut and tighten to specification.


A-Pipe Spacer
B-Nut
C-Lock Nut

H55872

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NOTE: Flat Washers are installed between sprocket and clutch canister.

Install jaw, spring and canister (A).

Retain canister with clutch bolts, flat washers and flange nuts (B). Tighten nuts to specification.

Specification

Clutch bolts -Torque 110 N·m (81 lb-ft)


A-Canister
B-Flange Nuts

H55873

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H58750

9450 and 9550 Combines

H55871

9650 Combines

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

(9450 and 9550 Combines) Position remaining sprockets 603 mm (23-3/4 in.) apart.

(9650 Combines) Position remaining sprockets 493 mm (19-3/8 in.) apart.

Sprockets should cover keys.

Tighten set screws in sprocket to specifications.

Specification

Set Screw -Torque 50 N·m (37 lb-ft)

Install conveyor chain and right-hand side drive chain.

Adjust chain tension (See "ADJUSTING FEEDER CONVEYER DRIVE CHAIN").

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

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