FFS2000 Series Chapter 11: Maintenance
Rev B, July 21, 2017 Page 63
Figure 52 Change Rotary FHB Insert
11.2.3. Adjust Cleave Tension
1. Insert the FHB to be adjusted at the appropriate cleave position on the splicer. Note: Make sure to leave
the cleave lever in its released position.
2. Manually push the center sliding block up against the inside wall against the FHB (towards the cleave
block).
3. Engage the dial tension gage with its tangent point on the sliding block of the FHB as shown in Figure 53.
“Pre-load” the tension gauge until it reads slightly below the desired cleave tension.
4. Release the center sliding block. The block should move backwards very slightly and be “supported” by
the tension gauge. If the block does not move at all or moves back to far, try again with different “pre-
load” tension. Repeat until the “pre-load” tension is such that it just “catches” the sliding block when it is
released. This tension is the cleave tension. With practice, this process can be quickly accomplished by
“tapping” the sliding block up against the inside wall of the FHB while applying tension with the tension
gauge. Note: It is important to read the cleave tension just as the sliding block moves off the inside wall of
the FHB, as this corresponds to the cleave location.
5. If the cleave tension needs adjustment, access the tension screw with a 0.050” hex key through the
access hole in the FHB (Figure 53). Increase the tension by turning the screw clockwise; decrease the
tension by turning the screw counter clockwise. One full turn of the screw adjusts the tension
approximately by 20 grams.
Figure 53 Adjust Cleave Tension
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