TM 5-4610-223-12
(3)
Remove sprocket (8, fig. 3-36) from shaft.
(4)
Press sprocket bearing (5, fig. 4-93) out of sprocket (3).
(5)
Remove nut (6), lockwasher (7) and flat washer (8) from chain tightener shaft assembly (9), and remove
assembly from unit.
b.
Replace. Replace all defective parts.
c.
Reassembly and Installation.
(1)
Install chain tightener shaft assembly (9, fig. 4-93) into equipment frame (10, fig. 3-36) and secure with
flat washer (8, fig. 4-93), lockwasher (7) and nut (6).
(2)
Press bearing (5) into sprocket (4) with a brass drift and install the sprocket on the shaft (8).
(3)
Install collar (2) on shaft (9) and secure with setscrew (3).
(4)
Screw fitting (1) in end of shaft (9).
(5)
Adjust roller chain (para 4-110).
(6)
Install chain guard (para 4-107).
4-110. CHEMICAL SLURRY FEEDER DRIVE CHAIN .
a.
Removal.
(1)
Remove chain guard (para 4-107).
(2)
Loosen nut (6, fig. 4-93) and slide chain tightener toward diatomite dilution tank.
(3)
Remove connecting link from roller chain (1) and remove chain.
b.
Inspect. Inspect the chain for wear and damaged links and rollers.
c.
Replace. Replace the chain if it is damaged.
d.
Installation and Adjustment.
(1)
Install roller chain (1, fig. 3-36) and slip clutch sprocket (5) and speed reducer sprocket (9). Secure the
chain with its connector link.
(2)
Move chain tightener sprocket (8) against chain until correct tension in chain is obtained, then tighten the
nut (6, fig. 4-93). The tension is correct when the chain can be depressed about 1/2 inch at a point midway between the
drive sprockets.
4-192