Fault phenomenon: after the oil pump is started, there is no oil or the amount of oil is insufficient

Reason 1: Insufficient or no oil in the fuel tank

Remedy 1: Refuel to the oil level gauge line

Reason 2: The filter is clogged

Remedy 2: Clean or replace the filter

Reason 3: The fuel tank is airtight

Remedy 3: Check if the fuel tank vent is blocked

Reason 4: The oil suction pipe joint is loose and the air intake

Remedy 4: Tighten the pipe joint

Fault phenomenon: insufficient pressure of hydraulic system

Reason 1: Relief (pressure regulating) valve spring fatigue

Remedy 1: Adjust its limit nut or replace the spring

Reason 2: The overflow (pressure regulating) valve seat cone valve is damaged or stuck

Troubleshooting method 2: Remove the pressure reducing valve sleeve to check and troubleshoot

Reason 3: Oil leakage from hydraulic components or pipelines

Elimination method 3: Check components and pipeline maintenance

Reason 4: There is air in the system

Remedy 4: Exhaust, and check the cause of the intake and eliminate it

Fault phenomenon: the force of the coupling is not enough to cause it to slip

Reason: Excessive wear or fragmentation of the friction plate, failure or rupture of the compression spring

Remedy: replace the friction plate or replace the spring

Fault phenomenon: excessive wear of the heating elastic ring of the coupling

Reason: poor coaxiality when the power machine and the clutch are assembled

Elimination method: improve assembly coaxiality

Fault phenomenon: hydraulic system oil temperature is too high

Reason 1: Too little oil in the fuel tank

Remedy 1: Refuel to the oil level gauge line

Reason 2: The oil pump is damaged

Remedy 2: Repair or replace the oil pump

Reason 3: The oil pump work selection is unreasonable

Elimination method 3: Reasonable selection of working pump

Reason 4: The oil pump is working under too high pressure

Elimination method 4: Select working pressure according to the recommendation of the manual