3M 3M-Matic S-857, Instructions And Parts List

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17
Adjustments
WARNING – Turn "Off" main air supply
at on/off valve and disconnect air
supply line before making any adjustments.
Failure to disconnect air supply line could
result in severe personal injury.
Tape Width
The tape drum is assembled at the factory for 3/8
inch [9 mm] or 1/2 inch [12 mm] wide tapes. For
5/8 inch [15 mm] tapes the retainers must be moved
to the secondary position on the tape drum. This is
done by removing the two screws and relocating the
retainer, shown in Figure 2-4, then replacing and
securing the screws.
Tape Web Alignment
The tape drum assembly controls tape web
alignment in the applicator. Adjust the tape drum
assembly so the tape web is dispensed, centered on
the buffing rollers.
Tape Drum Tension
The tape drum assembly provides a preset tape roll
tension to control over-travel. The tape drum
tension requires no further adjustment.
Tape Tension Roller
The tension roller assembly, shown in Figure 4-1,
provides a preset tension to the tape web. No
further adjustment is required. If the tension roller
assembly is replaced or comes out of adjustment,
make adjustment as follows to obtain tension to the
tape web: turn the lock nut, located behind the
tension roller assembly, counterclockwise to
increase tension, clockwise to decrease tension.
V-8 Valve Adjustment
There are two lines scribed on the actuator button of
the valve. Correct adjustment of valve places the
middle of these two lines at the edge of the actuator
button housing when feed assembly is at top of
travel (see Figure 5-1). Loosen valve adjustment
screws (2), slide valve up or down to obtain this
adjustment and tighten screws. Be sure feed
assembly is held at top of travel when making valve
adjustment.
Air Flow Controls
The flow controls for the tape feed air cylinder and
tape buff air cylinder are preset at the factory. The
controls are located on the top right hand corner of
the S-857. Should adjustment be necessary, turn
knob counterclockwise to increase cylinder speed
and clockwise to decrease cylinder speed. Factory
adjustment was set as shown in Figure 5-2. The
flow control, mounted on the jaw cylinder to control
speed, has been pre-set three turns open at the
factory.
Figure 5-1 – V-8 Valve Adjustment Figure 5-2 – Air Flow Controls – Top View