TM 9-3405-205-14 & P
BLADE INSTALLATION (continued)
Increase tension to the setting for the blade width to be used. Slide one insert on each guide to be lightly against the blade
and lock in position. Slide the other insert against the blade to give a slight drag and lock in position. Check this by pulling
out on the band and checking the feel of the slight drag. Close. the guide bar mounted blade guard and both doors before
starting the band saw.
TABLE AND BELT ADJUSTMENTS
TABLE STOP ADJUSTMENT: The table stop is factory set to position the table square with the blade and should not need
adjustment. However, if the band saw is realigned for any reason, it will be necessary to reset the stop. Unlock the jam
nut and screw the jackscrew a few turns down into the bracket o as to al-low the table to go past the 0 point. Adjust the
guide bar to be close to the table with the trunnion unlocked and with a combination square, or similar gauge set on the
table with the blade against the post; adjust the table to be square with the post using the jackscrew in the stop bracket.
Relock the jam nut, swing the table away from and then back to the stop. Tighten the trunnion lock. Recheck to see if the
table is still square with the guide post. Readjust if necessary. Check the position of the scale pointer and reposition if
necessary (fig. 3).
BELT ADJUSTMENT: Shift the transmission into it's neutral position. Remove the rear cover. The belts from the
transmission to the countershaft can be tightened by means of a jackscrew in a lug welded to the upper shelf. With the
four mounting screws snug but not tight, jack the countershaft bracket until the three belts between the transmission and
countershaft are properly adjusted. The type of belt used must be guitar string tight to operate properly (fig. 4).
The variable. speed belt must be adjusted after the above belts are and must be readjusted whenever the above belts are
readjusted. Loosen the stops on the speed control screw and move them away from the operating nut. Turn saw motor
on and adjust speed control handle until the variable speed belt either bottoms out in the motor pulley or is flush with the
outside diameter of the countershaft pulley. It the belt bottoms out before becoming flush with the outside diameter, raise
the motor by adjusting the motor base with the jackscrew nuts. Continue raising the motor base and adjusting the speed
control until the belt is flush with the outside diameter of the countershaft pulley and just slightly before bottoming out on
the motor pulley. If belt is flush with countershaft pulley outside diameter and has not bottomed out, squeeze the belts
halves together or pull out on the belt to cause the spring loaded side of the motor pulley to move back and lower the
motor base until the belt is close to bottoming out on the motor pulley hub. Set the low speed stop on the speed adjusting
nut and lock in place. Check the position of the information on the dial to see if the low speeds 47 and 620 line up with the
pointer. If it does not, loosen the nut on the speed control handwheel shaft and push the shaft forward until the gearing
disengages and the speed dial spins free. Adjust dial so that the low speeds 47 ant; 520 line up with the pointer.
Retighten nut on the end of the speed control shaft making certain by rocking the dial that it is lined up -to the nearest
tooth and that the gears re-engage.
If the saw is equipped with an optional chip blower, belt tension is achieved by use of a jackscrew and jam nut working
through an ear welded to the lower shelf. Back off on the jackscrew to install the belt and use it to tension the belt once it
is installed. The type of belt used requires that it be guitar string tight for proper drive.
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