Chengli Special Automobile Co., Ltd.

About Us

» About Us

Common faults and solutions for truck-mounted crane

December 26, 2023

As we all know the truck crane is a multi-functional vehicle, in the installation industry, landscaping, port terminal lifting, site transfer, power industry and other industries have the function of not to be underestimated. So, in the process of using the truck crane, whether the bosses will encounter crane faults appear, today we bring you common faults and solutions, I hope to be able to help you!I’ve presented the common faults and solutions in a table that.

crane truck

Serial No. malfunctions Causes of malfunction cure
1 Telescopic cylinder vibration and telescopic boom crawling Air in the hydraulic system, aging seals in the telescopic cylinder Remove air from system, replace cylinder seals, add lubricant
2 Still too slow to work with no load The suction pipe is squeezed or air is sucked in through the suction pipe. Change suction pipe or tighten suction pipe fitting
3 Telescopic arm does not retract in sequence Lack of lubrication, bad slider, faulty adjustment of the telescopic arm valve. Add lubricant, change slider, adjust telescopic arm valve.
4 Crane cannot lift rated weight Underpowered hydraulic pumps or damaged seals, incorrectly set relief valves Replace hydraulic oil pump or seal, adjust relief valve pressure
5 Automatic drop after lifting a weight Damage to the piston seal of the luffing cylinder, clogging of the throttle port of the counterbalance valve and fatigue damage of the reset spring. Replacement of cylinder seals or cleaning of counterbalance valves and replacement of springs
6 Joints or slewing squeaks Lack of lubrication Add lubricant
7 Outrigger cylinders can’t support Bad bi-directional hydraulic lock, damaged piston seal of outrigger cylinder Clean, replace valve locks, replace seals
8 Cylinder oil leakage, external leakage Internal leakage Damaged seals Replace all seals
9 Failure of the winch brake. Weakness of the mechanism. Friction plate damage, motor damage, low system pressure Replace friction plates, motor Adjust pressure

 

crane truck

crane truck

crane truck

crane truck

crane truck

 

Our manufacturer also produces  well-known domestic and foreign brands such as DONGFENG, SINO  Truck, ISUZU, FOTON, FAW etc. You can choose from cranes ranging from 2 to 30 tons. The manufacturer directly sells them for export, with low prices, guaranteed quality, and worry free after-sales service!

CATEGORY AND TAGS:
About Us, Knowledge , , , ,

Maybe you like also

  • Categories

  • Scan the code