| TROUBLE | CAUSE. | REMEDY |
| TONG DIE SLIPPAGE | A, JAWS ARE SELECTED IMPROPERL Y . | CHANGE JAWSTO PROPER SIZE. |
| B, GRIT/MUD ETC.FILL DIE GROOVES. | CLEAN THE DIES. |
| C, TONG DIES WORN. | CHANGE TO NEW DIES. |
| D, DISC BRAKE LOOSE. | TIGHTEN DISC BRAKE SPRINGS. |
| E, TONG IS NOT LEVEL. | ADJUST LEVELING SCREW ON RIGID SLING. |
| CAGE PLA TES ON TONG OR BACKUP WILL NO ALIGHT WITH OPENING BODY | RETAININGPINS (Z-69) (B6-5) ARE NOT WRAPPED BY RESET KNOB SHAFT | TURN RESET KNOBS(Z6-49) and (B6-3) 180o THEN RESET. |
| BACKUP TONG SLIPP AGE | HYDRAULIC PRESSURE DROP/ OR HYDRAULIC LEAKS. | CHECK VALVE PRESSURE IN INCREASE SYSTEM PRESSURE/ REPLACE VALVE SEALS IF REQUIRED. |
| ENGAGING A GEAR IS NOT FIRM AND IT DISENGAGE EASILY | LOCKING EFFORT IS A LITTLE SMALL. | ADD ADJUSTING SHIM AND INCREASE THE PRESSURE OF SPRING. |
About JC Wellhead
Jingcheng Petroleum Machinery Manufacturing Co.,Ltd was established in 2008, we are specialized in design and manufacturing of the oilfield wellhead equipment. We - YCJC are a registered supplier for CNPC, GWDC, CCDC in China and got the API certificate from 2010.
In 2012, JC wellhead jointed with ZZ TOP Oil tools to expand the international business, in order to meet the customers' various requirement, we work with other large drilling rig companies to supply the other oilfield equipments, such as drilling rig components (mud pump & parts, rotary swivel, travelling block, hook etc), handling tools ( slip, elevator, spider, casing tong, power tong, mual tong etc.) and so on.
YCJC also engaged in abroad marketing, through these years of efforts, our wellhead equipment is exported to many countries, such as Thailand, UAE, Iran, Brazil, Argentina, USA etc. and enjoyed good reputation from the customers.
