Hobart 5212F manual Removing The Blade, Upper And Lower Pulleys, Blade Tension Adjustment

CARRIAGE (Model 5212)

In use, the carriage can roll back and forth between the left carriage stop (Fig. 4) and the right carriage stop, assuming the spring loaded carriage lock (Fig. 5) has not locked the carriage in a stationary position.

To remove the carriage, turn either of the carriage stops 90 degrees so the bumper is toward the rear (Fig. 4). Roll the carriage off either end while lifting it free of the carriage guide (Fig. 5).

To reinstall the carriage, hold the carriage so the center bearings (underneath) are aligned with the carriage guide. Roll the carriage into place. Return the carriage stops so the carriage is stopped at both ends.

REMOVING THE BLADE

To remove the blade, raise the gauge plate to its vertical position. Remove the table and move the carriage to the left. Turn the tension adjustment handwheel (Fig. 6) to the left to lower the upper pulley (release tension on blade). Open the head door. Swing up nylon guard on lower wiper assembly (Fig. 3) and remove the saw blade. Lower the upper guide and guard assembly to its lowest position. Reinstall the blade so the teeth point to the right and down (Fig. 2). Adjust the blade tension to its proper setting (see BLADE TENSION ADJUSTMENT, below). Check the blade back-up blocks (see ADJUSTING THE BLADE BACK-UPBLOCKS, below). Reinstall the table.

Tension Indicator

Upper Pulley Wiper Hand Knob

Knob

Tension Adjustment Hand Wheel

Upper Back-up Block

Upper Guide and Guard

PL-40789-1

Fig. 6

UPPER AND LOWER PULLEYS

The upper and lower pulleys are assembled on the upper and lower pulley shafts; the latch on each pulley should be seated in the groove of the pulley shaft (Fig. 4). Pulleys can be removed after the blade has first been loosened and removed. Upper and lower pulleys are interchangeable.

BLADE TENSION ADJUSTMENT

With the blade installed, turn the tension adjustment hand wheel to the right until the figure 3 starts to show in the tension indicator (Fig. 6). Rotate the upper pulley a few turns by hand until the blade centers itself on the pulleys. Then turn the tension adjustment hand wheel slowly to the right until the indicator registers 4 at eye level. This is the maximum operating tension for the blade.

ADJUSTING THE BLADE BACK-UP BLOCKS

The upper and lower back-up blocks support the back edge of the blade during sawing. The upper back-up block is located in the upper guide and guard assembly (Fig. 6); and, the lower back-up block is located below the blade guide on the lower guide and wiper assembly (Fig. 3). Clearance between back-up blocks and blade should be approximately 1/32". Adjust to this dimension by turning adjustment screw(s) after changing saw blades; blade widths may vary (see BLADE GUIDE, page 6).

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