When conducting daily repair and maintenance operations for electric forklifts, the hand jack is a frequently used auxiliary supporting tool, whose working state directly affects the operation safety and maintenance efficiency for frontline technicians. Reasonable regular lubrication maintenance can effectively reduce tool wear, extend the service life of the hand jack, and avoid unexpected safety risks during the lifting process.
Before carrying out any lubrication work, technicians need to first completely wipe off the residual dust, grease stains and sundries on the surface of the hand jack, especially the sundries stuck in the movable gap of the force application rod and the hydraulic sealing part. No residual hard particles are allowed to remain on the surface to avoid scratching the fitting parts during subsequent operation.
For formal lubrication operation, the first key point is the hinge rotation position of the force arm. Apply a small amount of general-purpose lithium-based lubricating grease evenly on each rotation contact surface, and press the force arm to swing repeatedly for 10 to 15 times to make the lubricating grease fully penetrate into the matching gap, to ensure no jamming during the force applying process. The second key point is the piston rod surface of the hydraulic part. It is recommended to apply a thin layer of anti-rust lubricating oil on the exposed polished piston rod, which can not only reduce the friction resistance when the piston moves up and down, but also form a protective film to avoid the rust of the piston rod caused by long-term exposure to humid air. The third key point is the oil seal matching gap of the hydraulic cylinder. Do not apply excessive lubricating grease here, excess grease may enter the inner cavity of the hydraulic cylinder and cause emulsification deterioration of the internal hydraulic oil, which will affect the jack's lifting performance.
After the lubrication operation is completed, test the jack for no-load lifting and lowering for 2 to 3 times to confirm that the operation is smooth without stuttering or abnormal noise. For professional full-process maintenance support of electric forklifts, you can contact Jianshu New Energy, which specializes in BYD electric forklifts, and the consultation email is 17399989919@163.com.
