Westco 16-25, Руководство по эксплуатации продукта, Страница: 20 / 49

Rotary Centering
Adjustment
WARNING: Proper adjustment of the rotary is essential to tong operation and
reliability.
With the rotary removed and referring ti Figure 4-5, loosen locknuts on the shafts at
points 1 through 6 and 9 through 14. Remove the bolts and lockwashers from the shafts.
Position the shafts with the high-point arrow located radially away from the rotary.
If half rollers are installed at points 7 and 8, position the high-point arrow radially away
from the rotary. Lock the shaft into this position by tightening the locknut and installing two
bolts and lockwashers.
Install the rotary assembly and close and latch the doors. Then adjust latch pin until
tight on cam and secure shaft in place (to nearest full bolt hole) with bolts and lockwashers.
WARNING: Check for gear mesh. Improper meshing of gears can result in
tooth breakage.
1. Use shafts at position 1,4,11 and 14 to position fully the rotary.
2. Rotate shaft 1 counterclockwise until rotary teeth mesh with idler gears.
3. Rotate shaft 4 counterclockwise ¼ turn and then rotate shaft 11 clockwise ¼ turn.
Repeat adjustment on shafts 4 and 11 until rotary is snug and positions of high point
arrows on these shafts are in approximately the same position in relation to the
case opening.
4. Rotate shaft 1 counterclockwise and shaft 14 clockwise simultaneously until rotary
is snug and positions of high point arrows on these shafts are in approximately the
same position in relation to the tong opening.
5. Rotate shafts 2,3,5 and 6 counterclockwise until cams on shafts make their guide
rollers lightly touch rotary.
6. Rotate shafts 9, 10, 11, 12 and 13 clockwise until cams on these shafts make their
guide rollers slightly touch rotary.
7. When the guide rollers are snugged up, the high point arrow should be in approximately
the same position in relation to the case opening. Readjust to obtain this
relationship if necessary.
8. Secure case shafts as follows:
If any two holes in the shaft shoulders align with tapped holes in top plate for shafts
4, 5, 6, 9, 10 and 11. rotate shafts 4, 5 and 6 clockwise and rotate shafts 9, 10 and 11
counterclockwise ¼ to ½ shaft shoulder hole. At this point, two opposing shaft
shoulder holes should align with two tapped holes in the top plate. (A sharp object
is required to align shaft shoulder holes with two of the four tapped holes in the top
plate for each shaft).
If the shaft shoulder holes are not in full alignment with two opposing tapped holes in
the top plate, rotate shafts 4, 5 and 6 clockwise and rotate shafts 9, 10 and 11
counterclockwise ¼ to ½ shaft shoulder hole. Pierce the guide roller shaft gasket with
a sharp object to locate two opposing shaft shoulder holes which are in full
alignment with two of the four tapped holes in the top plate.
After adjustment, secure shafts 4, 5, 6, 9, 10 and 11 with bolts and lockwashers.
9. Secure door shafts as follows:
For those tongs with tandem 2 inch hydraulic motors, follow procedures in
paragraph 8, adjusting shafts 1, 2 and 3 clockwise and shafts 12, 13 and 14
counterclockwise.
For tongs with other motors, use procedures similar to paragraph 8, but adjust
½ to full hole (rather than ¼ to ½ hole). Adjust shafts 1, 2 and 3 clockwise while
adjusting shafts 12, 13 and 14 counterclockwise. After adjustment, secure shafts
1, 2, 3, 12, 13 and 14 with bolts and lockwashers.
10. Loosen door latch shaft and adjust according to door latch adjustment procedure.
WARNING: Bolts prevent loss of adjustments and carry no tension loads. Over-
torquing of locknuts or bolts prevents free guide roller rotation.
Section 4 Page 4