b. Loosen jam nut (4).
c. Tighten bolt (5) to tighten chain (6) or loosen bolt
to loosen chain.
d. When chain (6) is properly adjusted, tighten jam
nut (4) against top of chain adjuster (3).
e. Tighten four locknuts (1).
7-14. Chain Adjuster and Upper Sprocket,
Shaft, and Bearings Replacement
a. Removal.
(1) Fully loosen chain (see paragraph 7-13).
b. Installation.
(1) Install lubrication fitting (16) in each bearing
(7).
(2) Screw jam nut (15) onto bolt (14) and install
bolt in chain adjuster (8). Do not tighten jam nut against
chain adjuster.
Note: Ensure that chain adjuster is installed correctly. Chain adjuster
should be installed so that holes for shaft are closer to front (drifter side)
of feedshell.
(3) Slide chain adjuster (8) over top of feedshell
(9).
(4) Position sprocket (12) in feedshell (9) and in-
stall shaft (13) through chain adjuster (8), feedshell, and
(2) Remove four cotter pins (1) from one of the
sprocket. Ensure that sprocket is centered on shaft.
master links (2) on feed chain (3). Remove master link.
(5) Tighten setscrew (11) in sprocket (12).
Discard cotter pins.
(3) Remove two locknuts (4), flatwashers (5), and
Note: Bearing on control valve side of feedshell must be installed with)
lubrication fitting to rear.
bolts (6) securing each bearing (7) to chain adjuster (8) and
feedshell (9). Discard locknuts.
(6) Install bearing (7) on each end of shaft (13).
(4) Loosen two setscrews (10) in each bearing (7).
(7) Secure each bearing (7) to chain adjuster (8)
and feedshell (9) using two bolts (6), flatwashers (5) and
(5) Loosen setscrew (11) in sprocket (12).
new locknuts (4). Do not fully tighten locknuts.
(6) Drive out shaft (13) and remove sprocket (12),
(8) Tighten two setscrews (10) in each bearing (7).
chain adjuster (8), and two bearings (7).
(9) Ensure that drive chain (3) properly engages all
(7) Remove bolt (14) and jam nut (15) from chain
sprockets. Install master link (2) and secure with four new
cotter pins (1).
adjuster (8).
(10) Lubricate bearings (LO 5-3820-241-12).
(8) Remove lubrication fitting (16) from each bear-
ing (7).
(11) Adjust chain (see paragraph 7-13).
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