3M 800r3 personnel could result, Drive Belts, 2 - Box Drive Belt Left Side View - Infeed End

Maintenance (Continued)

WARNING – Turn off electrical and air supplies and disconnect power cord from electrical supply before beginning maintenance. If power cord is not disconnected, severe injury to

personnel could result.

Drive Belts

WARNING –The E-Stop switch or door must not be used for raising

the upper head assembly for maintenance work. If these are used the upper head assembly could lower during maintenance work causing injury to personnel.

Note – 3M recommends the replacement of drive belts in pairs, especially if belts are unevenly worn.

REPLACEMENT – SEE STEPS 1 THRU 17

TENSION ADJUSTMENT – SEE STEPS 1-8, 10, 11, 14 and 15

1.Turn air and electrical supply on.

2.Push and hold the upper frame raising switch

(A). Figure 3-2, page 16.

3.Push and hold the latching knob (B). Figure 3-6. page 16.

4.Release switch (A). Knob (B) will lock the upper head assembly in the upper position.

5.Shut off air supply.

6.Disconnect motor plug (A). Figure 4-2.

7.Remove and retain snap rings (B) and special washer (C) from front and rear arm assembly pivots. Figure 4-2.

8.Lift side drive assembly (D) up and off arm assembly pivots. Figure 4-2.

WARNING – Each drive assembly weighs approximately 20.4 kg

[45 lbs]. To prevent injury, drive assembly should be lifted by two people, one at the front and one at the rear.

9.Remove and retain the four screws (E), washers (F) and side cover (G). See Figure 4-2.

Figure 4-2 – Box Drive Belt (Left Side View – Infeed End)

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