Sullair 125 dies if not using air
by Rod Gaugh
Have an older Sullair 125. $ cylinder GM engine starts and runs well causing pressure to build quickly. As soon as pressure is up to 110 or so all ports must remain open to continue running. If you close air ports or stop using all the air produced it dies. Also, How do you change hydraulic fluid and what fluid to use. It appears to be a close system with no fill port or level check.