[Solved] CAL 534 TR Mower Transmission Oil: Suitable Type and Quantity for Effective Performance

Hello,
what oil should be used and in what quantity for the transmission in the mower, drive as in the photo borrowed from another topic:
I have temporarily used a 5w40 engine because I didn't have anything else at hand and I wanted to check if the drive would start after repair, but if it turns out to be bad, I only need to know what. Someone encountered this case?

The type of oil does not matter in this class of gearboxes. You pour the engine (e.g. your 5W40) - it will be good, you pour the transmission (e.g. Hipol GL-4 80W / 90) - it will also be good. I also tested semi-fluid grease (ŁT-4 grease mixed with 15W-40 engine oil for cream consistency) and it also worked. These are not strenuous gears, designed for hard, long-term work.

As for the amount of oil, it will probably be around 100 ml. The exact amount needed can be determined as follows:
1 / to the transmission, lying in the position as in the picture, pour oil as much as it enters. The vent hole, which is firmly (if available) in the upper part of the housing (near the pulley) must first be closed. After twisting both parts of the gear, this hole must be unblocked. The most commonly used method.
2 / to the oil pan, i.e. the bottom of the gear, pour max. oil. You put the rest of the gearbox on this oil pan and screw it on from below. Inconvenient method.
3 / scanning the inside of the gear housing. Expensive method, requiring a scanner and a computer program.
4 / calculation of the volume of the interior of the gear using double marked integrals. Archaic, time consuming and requires a lot of mathematical knowledge.

The axial holes will not spill out because there are sealants, unless they are no longer holding but so far there has been no leakage. I did as colleague Czyrzycki described, namely I poured into the lower bowl as much as I could (there are cutouts on the axle as in the upper housing as seen in the photo) and I turned the whole on silicone as it was originally. Initially, I poured into the upper bowl in the position as in the photo, but oil began to leak through the hole around the pulley, so I changed the concept and poured into the lower bowl. Even better, because it entered more than the top. I know this is a trivial thing, but the mower is from 2005 and the transmission showed no signs of wear, so I just want this state of affairs to last as long as possible. The more that the next newly purchased equipment will not serve so much time. Thanks for the answers.

Then write how much oil you have, maybe this information will be useful to someone.

I think 50, maximum 60 ml of oil came in. I would like to add that the gearbox has been working without a problem for 3 years, it would only be useful to replace the pulley before the next season. Fortunately available without any problems.