Forklift gear pump common system failures and solutions
July 28, 2022
Forklift gear pump battery, diesel, propane and other industrial power for industrial energy forklift, at present the more common mobile forklift are: electric forklift, electric stacker (the industry generally divided into full electric stacker, semi-electric stacker Trucks), electric trucks, propane forklifts, diesel forklifts, etc., designed and manufactured to meet the individual needs, such as forklift trucks, is a forklift (belonging to the meaning of the fork is redesigned according to special market needs to create To meet the needs of customers, the current common equipment such as dumping, paper tube folder, drum clamps, tire clamps, wooden clamps, etc., the design is very flexible), etc., which belong to the category of mobile forklift. Commonly used mobile lorry system are: drive system, lifting system, hydraulic system, brake system, steering system, the general love of the failure of these five systems, system common fault approach.
Drive system common faults and solutions:
First, the clutch slippage or not, the analysis of the causes of the malfunction are:
1, stuck on the friction plate oil or friction film damage, this approach is to deal with the friction plate or replace the friction plate;
2, the separation of bearings combined with pressure on the lever in the separation above, this approach is to deal with the split rod assembly short rod length;
3, the free bearing clearance is too large, this approach is to handle the sub-pump assembly putt transfer long;
4, there is air in the oil road, this approach is to drain the air inside the oil;
Second, the gearbox has abnormal sound, analysis of the causes of the malfunction are:
1, excessive gear wear or bearing damage, this approach is to replace the gear or replace the bearing;
2, there are debris gearbox, the solution is to rule out debris.
Lifting system common failures and solutions:
First, the mast tilt is not synchronized, the analysis of the cause of the fault is inconsistent with the two tilt cylinder stroke or cylinder pipe joints at the junction of the size of the hole caused by inconsistency, the approach is to adjust the two tilt cylinder stroke and replacement with the same closure Hole connector.
Second, the mast can not be hoisted when no load, this is because the multi-way valve overflow hole plugged, by clearing the multi-way valve overflow debris debris on it.
Third, the fork racks descending too fast, this is because the inlet port speed limit valve does not work, this only needs to repair the speed limit valve on it.
Fourth, the fork door automatically fall, this is because the lack of hydraulic oil tank, the solution is to overhaul multi-way valve, add hydraulic oil.
Braking system common faults and solutions:
First, the two wheels can not be braked at the same time. The reasons for the failure are as follows:
1, the gap between the two brakes or brake pipe clogging, the adjustment of the two brakes gap or clear the pipeline;
2, brake drum oil or brake shoe distortion, treatment is to remove oil or repair, replacement brake shoes;
3, there is air in the brake pipe, the way to deal with is to exclude the brake pipe air.
Second, hand brake failure, this may be due to relaxation of hand brake wire, the solution is to adjust the hand brake wire tightness.
Third, the brake failure, analysis of the reasons for the failure are:
1, brake drum and brake shoe clearance is too large, the way to deal with is to modulate the brake drum and brake shoe clearance;
2, brake master cylinder into and out of liquid valve failure, approach is to check access to liquid valve;
3, Brake friction plate wear excessive, approach is better friction plate;
4, friction plate contact surface is not enough, the solution is to repair the friction plate.
Steering system common faults and solutions:
First, the steering oil spill, analysis of the causes of the malfunction are:
1, the steering gear joints (body, diaphragm, stator, rotor) oil leakage, this approach is to change the seal, wash steering, joints or better solid bolts;
2, journal or relief valve ring damage, this treatment is relatively simple, that is, better at the journal and relief valve seal;
3, limit bolt washers uneven, this approach is to deal with polished washers or better washers.
Second, turn to failure, analysis of the causes of the malfunction are:
1, the steering spring break or deflection of the pin shaft deformation may also be a fracture or deformation of the coupling opening, this approach is better spring, pin, coupling;
2, safety valve failure, the solution is to clean the safety valve, replace the spring;
3, steering cylinder leak is too large, approach is to replace the seal or cylinder.
