Westco 4500 - Tong Fails to Go on Tubing; Jaw and Bushing Replacement; Jaw and Bushing Removal; Jaw and Bushing Reversal

39
TONG FAILS TO GO ON TUBING:
If the tong fails to go onto the tubing, it is probably because the jaw is partially closed. In this case,
run the motor in the direction that will fully open the jaw, and then proceed to install the tong on the
tubing. If this fails to work, check both the jaw and bushing for proper size and installation. Refer to
chart below.
JAW AND BUSHING SIZES:
Jaw and bushing sizes are stamped according to the actual O.D. of the tubing that they will fit – not
the normal size of the tubing.
NOMINAL
STAMPED
NOMINAL
STAMPED
¾”
1.050”
2 ½”
2 7/8”
1”
1.315”
3”
3 ½”
1 ¼”
1.660”
3 ½”
4”
1.750
4”
4 ½”
1 ½”
1.99
2 1/16”
2”
2 3/8”
CHANGING OR REVERSING JAW AND BUSHING
The jaw and bushing are reversible, depending upon the desired direction of rotation. If the jaw is
installed on the left side (standing in front of the tong, as you look into the opening of the tong), the
tong will rotate the tuning to the left. When the jaw is installed on the right side, it will rotate the
tubing to the right (the direction of tubing rotation when going into the hole).
REMOVAL OF JAW AND BUSHING:
Position the tong as if it were to go onto the tubing. Reverse the bushing. Reverse the motor and
move the outer ring slightly. This will remove any force against the pivot pin of the jaw so it will
come out easily. Remove the pivot pin and jaw.
NOTE: It is difficult to remove or install the jaw while the bushing is still in place.
REVERSAL OF JAW AND BUSHING:
Remove the jaw and bushing as outlined above. Move the outer ring slightly so there will be room to
get the lip of the jaw in back of the front roller of the outer ring. Make certain that the jaw and
bushing are the correct size. Install the jaw. Install the bushing.