Cutting Cylinder To Bottom Blade Adjustment; Cutting Cylinder Bearings; Front And Rear Roll Bearings - Jacobsen Fairway 250 JGZZ250 Operation And Maintenance Manual

9.6

CUTTING CYLINDER TO BOTTOM BLADE ADJUSTMENT _________________

Make sure that the cutting cylinder is installed in position
with the bottom blade correctly. Hold a piece of thin paper
between the edge of the blade and the spiral cutters and
turn the cylinder manually.
If the cut on the paper is smooth along the full length of the
bottom blade, then the adjustment is correct. If the cut is not
smooth, the blade must be adjusted. MAKE SURE THAT
THE CYLINDER IS TIGHTENED TO THE CORRECT
LEVEL. If the cylinder is worn, you need to backlap the
cylinder before the adjustment.
To adjust:
1. To adjust the cylinder to the bottom blade, lift and turn the
left and right handwheels (A). Make sure that the cylinder is
adjusted equally between left and right. Rotate in a clockwise direction to add to the level of cut. Rotate in an
anticlockwise direction to remove the level of cut. Turn the handwheel until it engages with the notches in the ring
that locks the cylinder. The adjuster has notches and each notch moves the cylinder by approximately 0.04 mm
(0.0015 inch).
THE ADJUSTMENT HAS A SELF-LOCKING MECHANISM. THERE IS NO REASON TO UNLOCK OR LOCK
THE MECHANISM.
IMPORTANT:
IN ROUGH GROUND CONDITIONS YOU NEED TO SECURE THE NUTS IN POSITION. SECURE THE
BEARING HOUSINGS TO THE SIDE FRAME. THE HOUSINGS RUN IN ADJUSTMENT SLOTS THAT KEEP
THE CYLINDER TO THE ADJUSTMENT SETTINGS FOR THE BOTTOM BLADE. THE ADJUSTMENT
DEPENDS ON THE PREVIOUS EXPERIENCE WITH THE MACHINE. THE NUTS MUST BE TIGHTENED
COMPLETELY AND LOOSENED BY 1/2 A TURN. ADJUST THE HANDWHEEL AND DO NOT LOCK THE
NUTS.
9.7

CUTTING CYLINDER BEARINGS ______________________________________

Do not adjust the cutting cylinder bearings. The cutting cylinder bearings self adjusting taper roller bearings.
9.8

FRONT AND REAR ROLL BEARINGS __________________________________

Do not adjust the roll bearings. The roll bearings are self adjusting taper roller bearings.
9 ADJUSTMENTS
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