What Lubricant To Use For A Trimmer Gearbox
Sometimes, in the midst of intense mowing of grass, your trimmer begins to make unpleasant, grinding sounds. This complains about the lack of lubrication of the gearbox. the most intensively loaded unit of the device. And soon, these “warnings” may be followed by jamming of the drive.
What grease should be used for the trimmer gearbox?
In the process, the mechanical part of the trimmer is loaded with contact forces on the teeth, resistance reactions from adhering grass (sometimes with dirt), dynamic, impact loads due to constantly changing torque. The grease for the trimmer gear must fully take into account these features, so the selection of the brand must be strictly individual.
The following factors are taken into account:
The lubricant consumption also depends on the temperature at which it retains its lubricity. When the gearbox is heated to 40 ° C, it is considered that its operating conditions are satisfactory, and there is enough lubrication.
It is believed that there is no universal lubricant for the trimmer gear, but this is not entirely true. In fact, a suitable lubricant will be one in which the following components are present:
Video: What Lubricant To Use For A Trimmer Gearbox
- Anti-wear additives containing no toxic lead;
- Solid lubricants with the presence of graphite or molybdenum disulfide (the latter is preferable, since the lubricity is fully preserved for a wide range of shaft revolutions);
- Only mineral (inorganic!) Oils, with a high degree of purification.
The lithium greases Gear Grease OREGON or Champion EP-0, domestic compositions Oleo-Mas, Litol.24, or Azmol 158, as well as those recommended by the manufacturer of a particular trimmer model, fully meet the mentioned requirements.
How to lubricate the trimmer gearbox?
In the upper part of the housing, where the gear block is installed, there is a technological hole, which, when the trimmer is operated, is plugged with a screw. This screw is unscrewed, and 1.5. 2 ml of grease is introduced into the hole using the nozzle on the tube. If the lubricant was purchased in a different packaging, then for this operation a regular disposable medical syringe is also suitable.
After that, the screw is installed in its original place. This procedure, regardless of the user’s recommendations, should be performed every 10. 15 hours of operation of the trimmer in operating mode. Other reasons for updating or replacing the gearbox lubricant are the independent performance of minor routine maintenance (for example, cleaning and washing the gearbox gear before the start of the summer season), repair of the unit, preserving the trimmer for the winter period, etc.
If the gear unit is disassembled, it is recommended to completely remove the remains of the previous grease from the surface of the parts, even if it does not have any signs of oxidation and contamination. And only then apply new grease. After applying the lubricant, it is recommended to turn the shaft manually several times, and make sure that the lubricant is evenly distributed over all parts of the gearbox.
When lubricating, special attention is paid to the following elements: