off when tension is released.
8.5.5.
Release the tension by slowly revolving the hand wheel counter clockwise.
8.5.6.
Remove the blade.
8.6.
REPLACING THE BLADE
8.6.1.
Make sure the outer guide bearings are loose.
8.6.2.
Make sure the teeth are pointing in the right direction.
8.6.3.
Place the blade around the wheels and between the guide bearings.
8.6.4.
Hold the blade in position and apply tension. Blade tension generally must be
set at 25000 psi for hard back blades, and 35000 psi for bi-metal blades.
Use tension scale (fig.19).
8.6.5.
Push the blade against the wheel flange.
8.6.6.
Tighten the blade until it is properly tensioned. A properly tightened blade will ring
slightly when the back of the blade is plucked (like a string of an instrument).
8.6.7.
Adjust the outer guide bearings.
8.6.8.
Check for proper tracking (See Tracking Adjustment 7.2).
9. TROUBLESHOOTING
fig.19
PROBLEM
CAUSE
SOLUTION
E
xcessive blade breakage and/ or teeth
ripping from the blade.
W
orkpiece is loose in the vice.
Incorrect speed or feed.
B
lade is too course.
W
orkpiece is too course.
Incorrect blade tension.
B
lade is in contact with workpiece when
saw is started.
B
lade is rubbing on the wheel flange.
B
lade guides are misaligned.
B
lade is too thick.
Clamp the workpiece securely.
A
djust the speed or feed to suit the workpiece.
Replace with a finer blade.
U
se the saw at slower speed and use a finer blade.
A
djust blade tension.
Place blade in contact with the workpiece only after
the saw has started.
A
djust tracking.
A
djust blade guides.
U
se correct blade.
Premature blade dulling.
B
lade is too course.
Incorrect speed - too fast.
Inadequate feed
Hard spots or scale on the workpiece.
B
lade is twisting.
Insufficient blade tension.
B
lade is sliding.
Replace with a finer blade.
Reduce blade speed.
A
djust hydraulic feed control and/or bow weight.
Reduce blade speed, increase feed pressure.
R
eplace blade and adjust to the correct tension.
Increase blade tension.
Increase blade tension and reduce blade speed.
U
nusual wear on side or back of blade.
B
lade guides are worn.
B
lade guides are misaligned.
B
lade guide brackets are loose.
Replace blade guides.
A
djust guide pivots.
Tighten blade guide brackets.
Motor overheating.
B
lade tension too high.
Drive belt tension too high.
B
lade too coarse or too fine.
Gears need lubrication.
B
lade is binding in the cut.
Reduce blade tension.
Reduce drive belt tension.
U
se a blade more suitable for the workpiece.
Lubricate the gears.
Decrease feed and blade speed.
B
ad, crooked or rough cuts.
Feed pressure too great.
B
lade guides are misaligned.
Inadequate blade tension.
B
lade is dull.
Incorrect speed.
B
lade guides too far from workpiece.
B
lade guide assembly is loose.
B
lade is too coarse.
A
djust hydraulic feed control and/or bow weight.
A
djust blade guides.
Increase blade tension.
Replace the blade.
A
djust the speed.
A
djust guides.
Tighten the guide assembly.
U
se a finer blade.
B
lade twisting.
B
lade is binding in the cut.
B
lade tension is too high.
A
djust hydraulic feed control to decrease feed
pressure.
Decrease blade tension.
Original Language Version
© Jack Sealey Limited
S
M353CE.V3 Issue 1 23/01/20
