Shadrach Posted December 13, 2023 Report Posted December 13, 2023 An FYI for those with Brittain AP/Wing levelers. We have been on a 5 year replacement schedule for the latex vacuum tubing that drives the PC system. I extended the interval out to six years. The additional deterioration is significant. At first glance the tubing appears fine, but upon removal it is obviously beyond service life. It would be easy for someone that does not know any better to overlook this as the tube must be stretched to truly see the deterioration. It was still holding vacuum. 1 Quote
cliffy Posted December 13, 2023 Report Posted December 13, 2023 I was told by Brittain many years ago they use regular auto vacuum hose. It works fine and is relatively cheap. The colored plastic lines also crack and leak Check with a hand vacuum pump to find the ones leaking. Vinyl clear tubing slid over the broken line and clamped with the correct size Corbin clamps saves replacing the long runs of colored tubing if broken mid-run. Regular nylon instrument line works fine as a replacement Color the ends to match old line color. Quote
Shadrach Posted December 13, 2023 Author Report Posted December 13, 2023 1 hour ago, cliffy said: I was told by Brittain many years ago they use regular auto vacuum hose. It works fine and is relatively cheap. The colored plastic lines also crack and leak Check with a hand vacuum pump to find the ones leaking. Vinyl clear tubing slid over the broken line and clamped with the correct size Corbin clamps saves replacing the long runs of colored tubing if broken mid-run. Regular nylon instrument line works fine as a replacement Color the ends to match old line color. I have found the green and red polyethylene stuff to be very robust. But then, I’m still running all original servos and vacuum step. Everything is still soft and supple and gets a coat of silicone at annual whether it needs it or not. The IPC calls for #1036 1.25 tube whatever that is. I was concerned about how to log the Gates vac tube that I was told to buy until I realized that the stuff I’ve been getting from LASAR hose does not match the IPC number either. Quote
Kevin Westbrook Posted December 16, 2023 Report Posted December 16, 2023 Shadrech-kevin Westbrook here I worked at Brittain a good replacement tubing is gates p/n27043 call me if needed 539-292-0474 thanks 1 1 Quote
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