Older Super 2 - No Bar Oil

[bobt48]

Earlier I posted a thread under specific models, but have not received any information to help resolve my problem.  I am hoping to get a better response here as I know that Leon is an expert on these models from watching his videos.

Original Owner of Older Super 2. I have for years replaced internal thread Oil Cap, gobs of teflon tape, o-rings, etc. to maintain tight seal on tank. Saw stopped oiling and I purchased a replacement old stock oil tank to resolve my sealing issues. My original tank has the metal connector(69659-1), but no duckbill valve(?maybe the problem). This replacement tank has a plastic tee fitting(A-07508) with duckbill valve(69451) and red plastic tube(?) inserted inside other branch of the tee.

I still have no oil output with this replacement tank. I had read to make sure the duckbill was not touching tank side, which it maybe in this tank and that is when I discovered the plastic tee difference.  I am guessing that the red plastic tube is an orifice to allow tank to depressurize when not running to stop oil flow.


I extended the pressure input line to see if the diaphragm pump would force bubbles out under water. It did even at idle, but this may not be true when discharging into the pressurized tank. I installed the old connector(69659-1A) with new duckbill in the pressurizing hose in the oil tank. I then used a squeeze bulb on the inlet line to pressurize the tank and got oil flow from the line that connects to the port on the saw engine block.  I then used the squeeze bulb on this inlet port expecting to get air passage out of the oil line to the bar.  I did not get any air flow as discharge tube to bar was underwater and no bubbles.

I do not know why the oil flows from the tank through the inlet and outlet ports on the saw engine block.  Am I wrong to expect air to flow through it as I attempted per above. I am thinking maybe my loss of oil to the bar may be due to blockage here.

Thanks to everyone for reading this post and for any advice that is shared. I love my little Super 2 and this forum is absolutely wonderful. I have learned so much about my Homelite from this forum and Leon"s site and videos.



BobT48

[bobt48]

I am a fool, I had assumed that the oil pump was just a controlled volume air pump to pressurize the oil tank. I now looked closer at the figure in the shop service manual. I see how the pressure to tank is actually just a pass through of crankcase pulse under the diaphragm of the oil pump plunger and that the plunger rod is a piston of an oil pump. I could make the excuse it is not as easy to see details in small figures as I get older, but have to admit that I made a stupid assumption on how the oil system worked. I plan to put saw back together and hope that it now feeds oil as I understand parts for the pump are now a rare or expensive find. Hoping the problem is not in the pump section.

[onlyhomelites]

If you haven't messed with one of those systems, it's easy to be confused by it! As long as the diaphragm is pliable, it should pump. I've had some luck softening an old diaphragm up by soaking it in brake fluid for a few days. Good luck!

[Andrei Campan]

I had the same problem with my xl 2, diafragm type, disassembled and reassembled it several times, checked all the possible issues and finally found that the reason for the oil in cilinder is the incorrect position of the duckbill on the metal connector, it is critical to let a little gap (2,5-3mm) between the duckbill and the hose.

[Andrei Campan]

Feb 13, 2023 8:31:34 GMT -5 Andrei Campan said:

I had the same problem with my xl 2, diafragm type, disassembled and reassembled it several times, checked all the possible issues and finally found that the reason for the oil going in cilinder and not on the bar is the incorrect position of the duckbill on the metal connector, it is critical to let a little gap (2,5-3mm) between the duckbill and the hose.