Pro King 9XLT
Jan. 2022
16
Faults and Solutions
Note: If you could not troubleshoot any fault, please ask the manufacturer for help. We will help
you solve the problem as soon as possible. Provision of relevant information and photos of the
fault allows the manufacturer to solve the problem faster.
Fault
Reason
Solution
Motor does not run and
lift does not work.
Electric wire connection is poor.
Check and connect wires correctly.
Motor is burned.
Replace the motor.
Motor rotates but lift does
not work.
Motor reverses.
Correct electric wire connection.
Overflow valve is loose or blocked.
Adjust or clean overflow valve.
Gear pump needs priming or it is broken.
Prime or Replace gear pump.
Hydraulic oil is insufficient.
Add hydraulic oil.
Oil suction pipe is loose or drops.
Tighten oil suction pipe.
Buffer valve is loose or blocked.
Tighten or clean buffer valve.
Slow lowering down
occurs after lifting.
Check if there is oil leakage at any conduit.
Replace conduit.
Cylinder is sealed poorly.
Replace seals.
One-way valve is sealed poorly.
Disassemble, clean, resolve, or replace
Overflow valve works poorly.
Disassemble, clean, resolve, or replace
Manual unloading valve works poorly.
Disassemble, clean, resolve, or replace
Slow lifting
Filter clogs up.
Clean, resolve, or replace
Oil is mixed with air.
Add hydraulic oil.
Overflow valve is not well adjusted.
Adjust correctly.
Hydraulic oil turns hot (above 45°).
Stop to cool down or replace hydraulic oil.
Seals of cylinder are worn out.
Replace seals or cylinder.
Slow lowering
Explosion-proof throttle valve for lowering is
blocked by obstacle.
Replace, Clean, resolve or replace the
explosion-proof throttle valve.,
Hydraulic oil is not clean.
Replace hydraulic oil.
There is obstacle in conduit.
Clean or replace conduit.
