1 I have a hangar owner with a hydraulic door that when closed completely opens up slightly say 12 inches apx it does not come down at all when up. I did ck the hyd fluid level and it is not out when rams are extended. What type of hyd fluid does it use? Appears to be red. Could the hyd lever control have a slight leak and could it be fixed with just an o ring ?
2 I have 2 Schweiss bifold hangar doors with lift straps and they work perfectly and I want to keep them that way. Could you please send me a maintenance schedule and contact info for local repair companies.
