Model KT14000 power casing tong maintenance and operation manual
YANCHENG TEDA DRILLING & PRODUCTION EQUIPMENT CO.,LTD
2
3.
Operation
The instructions for tongs preparing and working as following:
3.1
Jaw installation
(see illustration below):
To install the jaws, remove the jaw pivot bolts from the cage plate. Plate one jaw at a time between the
upper and lower cage plates with the jaw roller pin facing upward. Align the hole in the jaw with the
matching hole in the cage plates, and insert the jaw pivot bolt.
3.2
Tong rig-up
3.2.1 Hang the tongs
(1)Fix the single pulley (with the load of 5 tons) on the bottom girder of the crown.
(2)Put the Slip wire rope (which has a diameter of not less than 5/8″) through the pulley. One end of wire
rope fastened on the bottom girder, and other end fastened on the lift bucket(master tong can choose to
use spring lift bucket, combined tong can choose to use hydraulic lift bucket).The height of power
tongs should be equal to the average height of connectors for tripping string.
3.2.2 Leveling the tong
It is necessary to level the tongs after Hang the tongs. Otherwise, it will lead to tong tooth slipping.
Front-rear leveling--it is adjusted through the left and right two horizontal bolts at the connection position
between lifting bracket and tong body of the power tongs.
Transverse leveling--it is adjusted through leveling bolts on the upper part of lifting bracket. And it may be
adjusted through turning the bolts.
3.2.3 Pipe Connection
When the power unit is not running, or the hydraulic pump is disengaged, the
hydraulic hoses may be installed to the tong. Pay attention to the oil inlet and
outlet ports before installing, oil inlet port is NPT1″, oil outlet port is NPT1
1/4″.
3.2.4 Tie the back guy
Tail rope diameter should be no less than 5/8″.One end of tail rope is fixed on
Oil inlet
Oil outlet
