John Saeli
Well-known Member
Bought a 430 Industrial in pieces. Did a lot of work to it, & installed the Model 22 Loader back on. New oil & cleaned screen, at idle she would snap the loader right up, & stall the engine if held against the relief valve.
However, revved up past fast idle & she would make a noise as though she was cavitating, or starving for oil, only when the loader was going up, or when moving the bucket, never on the way down. Double acting cyl's. I cannot understand why it would only make the noise when requiring pressure.
The only thing I did not do was to replace the short piece of hose, at the pump. My guess was that the hose was collapsing. When I removed the hose, it was perfect inside. I then removed the fittings pictured. The ID of everything was .70". Not even .750". The ID of the main pipe leading into the hose is .875". The ID of the hose is 1". I then decided to open the fittings up on the ID, and was able to drill out the inside of the fittings to .875". Great.
However, with the fittings removed, and when I look inside the intake port, I see a final port leading to the gears with only about a 5/8" opening. More restriction that I did not address.
Put it all together & the noise is considerably less, as a matter of fact, I need to rev up past a fast idle to get the noise. The speed of the cyl's also reacts w/ the throttle, which didn't happen before.
The fittings are factory, because of the matching paint that was on them. I assume poor design from the factory.
However, revved up past fast idle & she would make a noise as though she was cavitating, or starving for oil, only when the loader was going up, or when moving the bucket, never on the way down. Double acting cyl's. I cannot understand why it would only make the noise when requiring pressure.
The only thing I did not do was to replace the short piece of hose, at the pump. My guess was that the hose was collapsing. When I removed the hose, it was perfect inside. I then removed the fittings pictured. The ID of everything was .70". Not even .750". The ID of the main pipe leading into the hose is .875". The ID of the hose is 1". I then decided to open the fittings up on the ID, and was able to drill out the inside of the fittings to .875". Great.
However, with the fittings removed, and when I look inside the intake port, I see a final port leading to the gears with only about a 5/8" opening. More restriction that I did not address.
Put it all together & the noise is considerably less, as a matter of fact, I need to rev up past a fast idle to get the noise. The speed of the cyl's also reacts w/ the throttle, which didn't happen before.
The fittings are factory, because of the matching paint that was on them. I assume poor design from the factory.