Check and Adjust Hook Synchronization

In order to check distance (F) a fill stroke must be completed by moving 1:1 locking lever (J) forward to initiate a fill stroke.

1. Check hook synchronization only when system is at beginning of filling stroke, and center of crank arm (D), bearing (E), and pin (G) are aligned. See illustration.

   
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   A - Lock Nut

   B - Bolt

   C - Centerline

   D - Arm

   E - Bearing

   F - Distance

   G - Pin

   H - Lock Pin

   I - Hook

   J - 1:1 Locking Lever

   Disengage flywheel brake.

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2. Turn flywheel by hand counterclockwise until center of crank arm (D), bearing (E), and pin (G) are in alignment and hook is down over pin (G).

3. Verify three points are aligned by holding a straight edge through center points.

4. Pin (G) is now fully forward and ready to be checked for alignment with center of hook (I).

5. Significant force is required to overcome spring force of hook.

   Use a pry bar to lift hook off of pin (G). Pin must not move forward or backward and hook must lift cleanly off pin.

6. Lower hook back over pin and watch for any movement of pin or catching of hook. Pin must be in middle of slotted hole of hook as shown.

7. If hook does not fall smoothly and completely back over pin when pry bar is released, pin position needs to be adjusted.

Adjust Pin Position

1. Verify center of crank arm (D), bearing (E), and pin (G) are still in alignment with each other.

   On right side:

   • Loosen lock nut (A) and turn bolt (B) clockwise until it bottoms.
   
   

2. On left side:

   • Use a pry bar to lift hook off-and-on pin (G) while setting pin-to-hook.
   • Loosen lock nut (A).
   • Tighten adjustment bolt (B) until you can feel resistance in hook movement due to roller rubbing on rear of hook slot.
   • Count adjustment bolt “flats” while loosening bolt until a similar resistance can be felt in hook movement due to roller rubbing front surface of hook slot.
   • Divide total number of “flats” in half and tighten adjustment bolt (B) that amount of “flats” to center pin-to-hook slot.
   • Tighten lock nut (A).
   
   

3. On right-hand side, adjust bolt (B) out until it slightly touches arm then tighten lock nut (A).

4. Run machine for a few minutes and engage 1:1 locking lever several times to verify a smooth, downward movement of hook (I).