porschpow 7 #1 Posted June 7, 2017 When I was checking the oil and I found a small vacuum hose from the air cleaner that looks like it would go to an electrical switch that looks like it has electrical plugs going in and a vacuum port hole that looks broken off. Share this post Link to post Share on other sites
Racinbob 10,276 #2 Posted June 7, 2017 We could help you out better if you'd tell us what model you have and a picture would be great. 1 Share this post Link to post Share on other sites
Ed Kennell 35,767 #3 Posted June 7, 2017 Maybe a 520 with the fitting broken off the back of the Vacuum gauge ???? Share this post Link to post Share on other sites
porschpow 7 #5 Posted June 7, 2017 Sorry Fella's. I have a 520Hydro Picture I can try to get today But the hose looks like it runs from air cleaner to this switch on the driver's side of the tractor. Has pink wires that looks like they go to the gauges and the lights on the dash Share this post Link to post Share on other sites
Racinbob 10,276 #6 Posted June 7, 2017 That's probably for a restricted air flow (dirty air filter) indicator. 2 Share this post Link to post Share on other sites
Ed Kennell 35,767 #7 Posted June 7, 2017 I think Racinbob gets the flag. My '88 520H doesn't have this filter light. 1 Share this post Link to post Share on other sites
