1. Common causes of heavy steering:
(1) The upper and lower bearings of the steering gear are over-tightened or the shaft is damaged; the worm and the roller (tooth fan) are too tightly meshed.
(2) The knuckle kingpin and the knuckle thrust bearing have poor lubrication or rust; the knuckle kingpin and the bushing are too tight; or the bushing is rotating to block the oil passage and the grease cannot enter, so that the sleeve and the joint pin are sintered.
(3) The steering shaft, the casing is bent or the stem is recessed, causing friction or seizing.
(4) The ball pin parts of the vertical and horizontal tie rods are tightened too tightly or lacking in oil.
(5) Improper toe adjustment or low front wheel pressure; front axle or frame bending deformation.
2. Steady diagnosis and elimination:
Judgment and elimination of heavy steering should be performed in the order of the first steering gear, the linkage mechanism, and other parts. The specific method is as follows:
(1) Remove the steering arm and turn the steering wheel. If you feel heavy, the worm bearing tightness or the meshing gap between the worm and the roller (or tooth fan) is improper. If you turn the steering wheel and you feel uneven or stuck, the worm wheel or bearing may be damaged. Check the steering gear. If the steering wheel has a scratching sound, the steering shaft is generally bent or the casing is recessed and should be corrected or replaced.
(2) Remove the steering arm. If the steering wheel rotates flexibly and effortlessly, the fault should be on the linkage mechanism. The front axle shall be lifted, the left and right front wheels shall be pulled, the kingpin of the steering knuckle shall be inspected, the bushing and the thrust bearing, and the horizontal and the straight rods shall be checked. Whether the ball pin joint is too tight, whether the lubrication is good, and whether the bushing is sintered, and if necessary, it should be adjusted and replaced.
(3) If the above inspection results are all good, check whether the front axle and frame are deformed, whether the front wheel alignment is inaccurate, and whether the tire pressure is normal. The front axle and frame deformation should be corrected or replaced, and the front wheel misalignment should be adjusted.
(4) In steering, if there is accidental or intermittent steering heavy phenomenon, there is no certain regularity; and in the event of heavy, there is no fixed position of the steering wheel angle, this may be due to a long time no change of lubricant in the steering gear, The oil is interspersed with hard particles that wear away from the metal parts and are caught between the worm and the roller (or tooth fan), occasionally causing heavy steering. Cleaning the steering gear and replacing the oil can eliminate the malfunction.
(1) The upper and lower bearings of the steering gear are over-tightened or the shaft is damaged; the worm and the roller (tooth fan) are too tightly meshed.
(2) The knuckle kingpin and the knuckle thrust bearing have poor lubrication or rust; the knuckle kingpin and the bushing are too tight; or the bushing is rotating to block the oil passage and the grease cannot enter, so that the sleeve and the joint pin are sintered.
(3) The steering shaft, the casing is bent or the stem is recessed, causing friction or seizing.
(4) The ball pin parts of the vertical and horizontal tie rods are tightened too tightly or lacking in oil.
(5) Improper toe adjustment or low front wheel pressure; front axle or frame bending deformation.
2. Steady diagnosis and elimination:
Judgment and elimination of heavy steering should be performed in the order of the first steering gear, the linkage mechanism, and other parts. The specific method is as follows:
(1) Remove the steering arm and turn the steering wheel. If you feel heavy, the worm bearing tightness or the meshing gap between the worm and the roller (or tooth fan) is improper. If you turn the steering wheel and you feel uneven or stuck, the worm wheel or bearing may be damaged. Check the steering gear. If the steering wheel has a scratching sound, the steering shaft is generally bent or the casing is recessed and should be corrected or replaced.
(2) Remove the steering arm. If the steering wheel rotates flexibly and effortlessly, the fault should be on the linkage mechanism. The front axle shall be lifted, the left and right front wheels shall be pulled, the kingpin of the steering knuckle shall be inspected, the bushing and the thrust bearing, and the horizontal and the straight rods shall be checked. Whether the ball pin joint is too tight, whether the lubrication is good, and whether the bushing is sintered, and if necessary, it should be adjusted and replaced.
(3) If the above inspection results are all good, check whether the front axle and frame are deformed, whether the front wheel alignment is inaccurate, and whether the tire pressure is normal. The front axle and frame deformation should be corrected or replaced, and the front wheel misalignment should be adjusted.
(4) In steering, if there is accidental or intermittent steering heavy phenomenon, there is no certain regularity; and in the event of heavy, there is no fixed position of the steering wheel angle, this may be due to a long time no change of lubricant in the steering gear, The oil is interspersed with hard particles that wear away from the metal parts and are caught between the worm and the roller (or tooth fan), occasionally causing heavy steering. Cleaning the steering gear and replacing the oil can eliminate the malfunction.
PINGLE main business is production and operation of turn-key projects of 9-1000T flour machinery complete-equipment of various models, and contracting to undertake turn-key projects of 100-1000T steel structure complete-equipment; moreover, it has further developed special productive equipment of coarse cereals such as maize and brewing, and can provide scientific and perfect solutions to fine processing equipment and process technology of coarse cereals.
HEBEI PINGLE FLOUR MACHINERY GROUP CO., LTD , https://www.plrollermill.com