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Disassembly/Reassembly 3M-Matic 800rf Case Sealer
4-10 3M 1998 December
4-12. Knife Replacement, Lower Taping
Head
The Tape Cut-Off Knife is very sharp. To
avoid personal injury, handle the knife with
special care. Also, disconnect the power
before starting this procedure.
1. Remove the lower taping head from the case
sealer and lay it on a flat work surface.
2. Replace the knife using the knife replacement
procedure described for the upper taping head;
Procedure 4-11 in this section.
4-13.
Belt Drive Pulley Assembly
Ribbed Rings
1. Remove the side drive belt assembly using
Procedure 4-3 in this section.
2. Remove the side drive belt using Procedure 4-4 in
this section.
3. Remove the bolt and washer from the bottom of
the rod. Slide the rod out of the threaded sleeve.
4. Remove the self-locking nut and the washer from
the top of the wrap pulley assembly [43].
5. Remove the nut and washer from the top of the
idler roller assembly [51].
6. Remove the M22 nut from the top of the threaded
sleeve.
7. Remove the three (3) hex-head bolts and washers
from the top of the belt drive pulley assembly
[15].
8. Remove the eight (8) hex-head bolts and washers
from the upper half of the side drive belt assem-
bly.
9. Lift the upper half of the side drive belt assembly
off of the lower half, disengaging the upper
timing belt [71], and lay it aside.
10. If necessary, remove the old ribbed rings [17]
from the belt drive pulley assembly [15].
11. Slide the replacement ribbed rings [17] into
place, ensuring that the ribbed surface faces
outward.
Warning!