Forklift common faults and processing methods

Time: 2023-07-18

Source: TOOMOTOO

Author: TOOMOTOO

Click: 164 times

Motorized forklift class commonly used systems are: drive system, lifting system, hydraulic system, braking system, steering system, generally love the failure of these five systems, the system of common failures to deal with.

Drive system common faults and treatment:

First, the clutch slips or does not disengage, analyze the causes of failure are:

1, the friction plate above the sticking oil or friction plate damage, this treatment is to clean the friction plate or replace the friction plate.

2, the separation bearing combined state pressed on the separation lever above, this treatment is to shorten the length of the push rod of the sub-pump assembly.

3, the separation bearing free stroke is too large, this approach is to deal with the sub-pump assembly in the push rod to adjust the length of;.

4, there is air in the oil circuit, this treatment is to drain the air inside the oil circuit.

Second, there is an abnormal sound in the gearbox, analyze the causes of failure are:

1, excessive gear wear or bearing damage, this treatment is to replace the gear or replace the bearing; 2, there is debris inside the gearbox.

2, there are debris inside the gearbox, the way to deal with is to exclude debris.

Forklift drive systems.jpg

Lifting system common faults and processing methods:

1, the gantry tilt time is not synchronized, analyze the cause of the failure is because of the two tilt cylinder stroke is inconsistent or cylinder pipe joints at the cut-off hole size is inconsistent caused by the way to deal with the adjustment of the two tilt cylinder stroke and replacement of the same cut-off hole with the same connector.

2, no load when the gantry can not lift, this is because the multi-way valve overflow hole clogging, by clearing the multi-way valve overflow hole debris can be.

3, the fork gantry falling too fast, this is because the inlet speed limit valve does not work, this only need to repair the speed limit valve can be.

4, the fork gantry automatically down, this is because the cylinder hydraulic oil is insufficient, the treatment is to overhaul the multi-way valve, add hydraulic oil.

Forklift truck lifting systems.jpg

Common faults of the braking system and treatment:

First, the two wheels can not brake at the same time, analyze the causes of failure are:

1, the gap between the two brakes is not equal or brake line blockage, this adjustment of the gap between the two brakes or unclogging the pipeline.

2, brake drum oil or brake shoe distortion, treatment is to remove the oil or repair, replace the brake shoe; 3, there is air in the brake line.

3, brake lines in the air, the way to deal with is to remove the air from the brake lines.

Second, the hand brake failure, this may be due to the hand brake wire slack, the treatment is to adjust the tightness of the hand brake wire.

Third, brake failure, analyze the causes of failure are:

1, the brake drum and brake shoe clearance is too large, the treatment is to modulate the brake drum and brake shoe clearance;.

2, brake master cylinder inlet and outlet valve failure, the treatment is to overhaul the inlet and outlet valve.

3, brake friction pad wear excessive, the treatment is better friction pads;

4, friction plate contact surface is not enough, the treatment is to repair the friction plate.

Forklift hydraulic system.jpg

Common faults of the steering system and treatment:

First, the steering gear oil leakage, analyze the causes of failure are:

1, the steering gear joints (valve body, spacer, stator, rotor) oil leakage, this treatment is to replace the seal, cleaning the steering gear, joints or better solid bolts.

2, journal or relief valve seal damage, this treatment is relatively simple, is better at the journal and relief valve at the seal.

3, limit bolts at the gasket is not flat, this situation is handled by grinding the gasket or better gaskets.

Second, the steering failure, analyze the causes of failure are:

1, the steering gear spring broken or steering gear pin broken deformation, may also be coupling openings broken or deformed, this treatment is better spring plate, pin, coupling;

2Safety valve failure, the treatment is to clean the safety valve, replace the spring.

3, steering cylinder leakage is too large, the treatment is to replace the seals or cylinders.

Forklift common system failure is basically these, the basic routine maintenance work must be done, so that you can nip some of the major failures in the bud, while allowing drivers to have good operating habits and know some of the routine maintenance knowledge is essential. If there are other problems in the use of the process, please find a professional team for maintenance!

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