Feed Chain Sprockets, Bearings, and Shafts Replacement

(7) Remove lubrication fitting (14) from each bear-

7-15. Feed Chain Sprockets, Bearings, and

ing (8).

Shafts Replacement

b. Installation.

Note: This procedure is for the lower and middle sprockets, bearings,

(1) Install lubrication fitting (14) in each bearing

and shafts. If the upper sprocket, bearings, or shafts require replacement,

(8).

see paragraph 7-14.

Middle sprocket is illustrated. Procedure is identical for lower sprocket.

(2) Position sprocket (12) in feedshell (9) and in-

stall shaft (13). Ensure that sprocket is centered on shaft.

a. Removal.

(3) Tighten setscrew (11) in sprocket (12).

(1) Fully loosen chain (see paragraph 7-13).

(4) Install bearing (8) on each end of shaft (13).

(5) Secure each bearing (8) to feedshell (9) using

two bolts (7), flatwashers (6), new lockwashers (5), and

nuts (4).

(6) Tighten two setscrews (10) in each bearing (8).

(2) Remove four cotter pins (1) from one of the

master links (2) on drive chain (3). Remove master link.

Discard cotter pins.

(3) Remove two nuts (4), lockwashers (5), flat-

washers (6) (lower sprocket only), and bolts (7) securing

each bearing (8) to feedshell (9). Discard lockwashers.

(7) Ensure that drive chain (3) properly engages all

sprockets. Install master link (2) and secure with four new

(4) Loosen two setscrews (10) in each bearing (8).

cotter pins (1).

(5) Loosen setscrew (11) in sprocket (12).

(8) Lubricate bearings (LO 5-3820-241-12).

(6) Drive out shaft (13) and remove sprocket (17)

(9) Adjust chain (see paragraph 7-13).

and two bearings (8).