Dake Model Johnson J Saws - Manual (Page 14)

6/02
14
1. Raise frame a few inches above bed and close feed cylinder valve to hold frame up.
2. Remove necessary guards and blade cleaning brushes.
3. Turn blade tension screw counterclockwise and pull idle wheel toward center of machine.
4. Grasp blade in center forming two loops. From rear of machine place blade loops under
wheels and rest the near portion on right front blade guard. CAUTION: BE SURE TO
WEAR GLOVES WHEN HANDLING BLADES.
5. Push blade up into blade guides. CAUTION: BE AWARE OF HYDRAULIC & COOLANT
LINES.
6. Fit blade up against flanges of the idle and drive wheels and tighten tension screw enough
to hold blade in place. Depress side of blade near rear blade guard to hold blade on
wheels while tightening tension screw.
7. Check to see that the blade is positioned correctly and tighten screw. Consult blade
manufacturer for proper PSI tension.
8. Install blade cleaning brushes and guards that were removed earlier.
BLADE TRACKING ADJUSTMENT
Saw blade should track on each wheel with the back of blade up to, but not riding on, the
wheel flange. Adjust as follows:
1. Idle Wheel.
Open top cover on left end of machine to gain
access to idle wheel. Idle wheel is mounted on a
slide block, which contains the blade height
adjustment screws. To raise the blade, loosen the
two screws toward center of machine (A, Fig. 4)
one-half turn and tighten the other two screws (B)
one-half turn. Be sure tension screw (C) is properly
tightened. Reverse procedure to lower blade. Care
must be taken not to over adjust. Check by running
machine after each adjustment.
2. Drive Wheel.
(a) To raise the blade, loosen two cap screws (A, Fig. 5) and
tighten screws (B and C). All four screws must be turned
equally and in small increments (about ½ turn) to avoid over-
adjustment; check by running machine after each adjustment.
(b) To lower blade, reverse above procedure – loosen screws
(B and C) and tighten screw (A).