Ridgid BS1400 Owners Manual - Page 23
Adjusting Upper Blade Guide Assembly, Adjusting Upper Blade Guides And, Thrust Bearing, Warning
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ASSEMBLY ADJUSTING UPPER BLADE GUIDE ASSEMBLY See Figures 32 - 33. n Unplug the saw and remove switch key. n Loosen blade guard adjustment knob and raise or lower upper blade guide assembly to just above the material being cut. n Tighten blade guard adjustment knob. Make sure blade guides are still flat to the blade. If adjustment is necessary, loosen blade guard adjustment knob and rotate assembly until blade guides are flat to the blade. n The upper blade guide is spring loaded. To adjust the tension on the spring, remove blade guard adjustment knob, tighten or loosen set screw until desired tension is reached, and replace blade guard adjustment knob. ADJUSTING UPPER BLADE GUIDES AND THRUST BEARING See Figures 33 - 34. WARNING: Blade guard has been removed for picture clarity. Never operate the band saw without all guards in place and in working order. Failure to do so could result in possible serious personal injury. n Unplug the saw and remove switch key. n Blade must already be tensioned and tracking properly. n Loosen thumb screws and move blade guides as close to the blade as possible without pinching it. The thickness of a dollar bill on each side of blade is a good rule of thumb. n Tighten thumb screws. n Loosen thumb screw and turn knurled knob to move the blade guide bracket in or out until the front edge of the blade guides are just behind the "gullets" of the saw teeth. n Tighten thumb screw. n Loosen thumb screw and turn knurled knob to move the thrust bearing in or out until the bearing is 1/64 in. behind the blade. n Tighten thumb screw. n Blade thrust bearing should be adjusted so that the back edge of the blade overlaps the front face of the ball bearing approximately 1/8 in. To change position of the bearing, remove screw bearing, and back off knurled knob completely to remove the bearing shaft. Notice the bearing holder on the shaft is eccentric. Reinstall the bearing shaft, the bearing, and the screw. Examine the overlap between the bearing face and the blade. Change the position of the bearing shaft until the overlap is approximately 1/8 in. BLADE GUARD ADJUSTMENT KNOB ON P I U L L P U S OFF H O PUL BLADE GUARD 10° 0° 15° 30° 4 UPPER BLADE GUIDES L SET SCREW BLADE GUIDE ASSEMBLY WORKPIECE SAW BLADE Fig. 32 BLADE GUIDES SAW BLADE GULLET THUMB SCREWS KNURLED KNOBS 1/64 IN. THUMB SCREWS KNURLED KNOB THUMB SCREW Fig. 33 1/8 IN. THRUST BEARING BEARING SCREW SAW BLADE THUMB SCREW KNURLED KNOB BEARING SHAFT Fig. 34 23