Paddle Maintenance
Note: Over time, you may need to adjust the mixer paddles
to account for wear.
Adjusting the Paddles
Aligning the Circumferential Drum
Wipers
1. Rotate a paddle from the left row of paddles around
the drum and locate at the interior of the drum the
smallest distance between the drum and the wiper of
the paddle
(Figure
Figure 48
2. Mark the inside of the inside of the drum at the
location that you determined in step 1.
3. Align the wiper of a paddle to the mark.
4. Loosen the carriage bolts and flanged locknuts that
secure the paddle blade and wiper to the paddle
49).
48).
1. Wiper
2. Distance between
paddle-blade edge and
wiper edge—3 to 6 mm
(1/8 to 1/4 inch)
3. Wiper bar
5. Adjust the position of the wiper so that the wiper
lightly contacts the drum across the length of the wiper
(Figure
50).
1. Wiper lightly contacting the drum at the smallest distance
between the drum and the wiper of the paddle
6. Adjust the position of the paddle blade so that the
outer edge is 3 to 6 mm (1/8 to 1/4 inch) from the
(Figure
outer edge of the wiper.
7. Torque the carriage bolts and nuts to 19 to 25 N-m
(14 to 18 ft-lb).
8. Repeat steps
paddle row.
9. Repeat the procedure for the other paddle rows.
31
Figure 49
4. Paddle blade
5. Carriage bolt and flanged
locknut
Figure 50
4
through
7
for the other paddle for that