Several questions encountered while adding lubricant
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1. If the amount of lubricating oil in the pump’s bearing housing is below the recommended level, and the oil reservoir is full, then the lubricating oil in the reservoir will flow into the bearing housing. This is indicated by the appearance of bubbles in the reservoir, as well as a continuous drop in the oil level. Can we use the oil level in the reservoir to determine the oil level in the bearing housing? Will no flow occur between them only if they are at the same level? 2. Can the oil level in the reservoir reflect the oil level in the viewing window of the bearing housing?
There’s an explanation of the principle behind automatic oil refill cups on the forum; give it a search!
The liquid level in the oil cup should be higher than that in the bearing housing
The level in the bearing housing should be taken as the reference; if the oil level indicator shows that it is full, the actual level of oil in the bearings is incorrect, which can very likely lead to damage to the bearings.
If the oil cup is not clogged, its liquid level will accurately reflect the fuel tank’s liquid level! But if it is clogged, it will not reflect the true liquid level; in such cases, you need to use a dipstick to check the level (all fuel tanks come equipped with a dipstick).
I recommend you check out the post at this link; I believe you’ll find the answer there: http://bbs.hcbbs.com/viewthread.php?tid=89849&highlight=%D3%CD%B1%AD
It is inaccurate to determine the oil level in the bearing housing by checking the liquid level in the oil cup; it can be determined by looking through the viewing window
In theory, when there is a lack of oil in the bearing housing, the oil reservoir should automatically top up the oil, but in practice this is not always the case; therefore, it is necessary to rely on the oil level in the bearing housing.
The oil in the oil cup can flow into the bearing housing, but the oil in the bearing housing cannot return to the oil cup. After the oil cup is installed, it needs to be adjusted. The adjustment is based on the liquid level of the oil pump; the procedure involves first determining the liquid level and then deciding on the upper and lower installation positions of the oil cup. If the oil cup is removed, the liquid level in the remaining mounting holes reflects the level inside the bearing housing, but it’s not possible to determine whether this level meets the standard requirements. Therefore, first determine the standard required liquid level for the bearing housing.
Constant-level oil cups – such a great invention, it’s a shame that our factory’s equipment still uses traditional ones. The constant-level oil cup actually makes use of the principle of a communicating vessel as taught in high school physics; it can automatically add oil when the oil level in the device’s tank drops!
Of course they aren’t at the same height; as long as the oil reservoir and the pump body can be sealed, then under the effect of air pressure, the oil reservoir will definitely be at a higher level than the bearing housing. Only when the liquid level in the bearing housing is at its lowest point and it is in contact with the atmosphere will the lubricating oil flow into the bearing housing, thereby fulfilling the function of refilling it