Common faults and elimination methods of bolt drawing instrument
The common faults and troubleshooting methods of the bolt puller are as follows:
Symptoms | cause of issue | Approach |
pressure gauge no pressure display | Lack of oil in the oil tank | Open the oil filling valve to refuel |
The unloading valve is not tightened | Tighten clockwise | |
Oil leakage from the joint | Tighten the connector | |
The hand pump is not placed horizontally | Repressurize after leveling | |
Damaged pressure gauge | Remove for inspection or calibration | |
pressure can not reach | Lack of oil in the manual pump | come on |
Oil leakage from the joint | Check joints and seals | |
The oil quality is wrong or the oil is not clean | oil change | |
Hydraulic cylinder oil leakage | Damaged seal ring in the cylinder | Replace the seal |
pressure gauge reading significantly decreased | Severe oil leakage at joints | Tighten or replace the sealing ring |
seal failure | Replace the same type of sealing ring | |
Oil is too dirty | Use kerosene to clean the oil cylinder, pump body, oil pipe and oil cylinder and then change the oil | |
The one-way valves in the pump body are poorly sealed | Send back to factory for repair | |
Pressure gauge reads but Hydraulic cylinder without pressure | Tubing blockage | Unclog the hose |
Connector clogged | cleaning connector |
