Part No. 34032 Genie S-80 & Genie S-85 7 - 27Service Manual - First Edition Section 7 - Repair Procedures7-8Vacuum SwitchHow to Test the Vacuum Switcha ohmmeterb common terminal (SOL.)c vacuum switchd normally open terminal (ING.)1 Connect the leads from an ohmmeter orcontinuity tester to the common and normallyopen terminals.Result: There should be no continuity(infinite ).2 Apply mild suction to the vacuum port.Result: The switch should close and show fullcontinuity (zero ).Component damage hazard.Do not short the vacuum switchterminals to ground.FORD LSG-423 ENGINE7-7Water Temperature and OilPressure GaugesThe water temperature gauge is an electricalgauge. The sending unit has limit contacts that arefactory set. The contacts will close at 230 o F(109o C). When the contacts close, the engine willshut off to prevent damage and will not start untilthe temperature drops below the contact point.Temperature will be indicated when the key is onand the Emergency Stop Button is pulled out tothe ON position.Component damage hazard.Do not crank the engine withthe over-temperature light on.The oil pressure gauge is an electrical gauge. Thesending unit has limit contacts that are factory set.The contacts will close at 8 psi (0.55 bar). Whenthe contacts close, the engine will shut off toprevent damage. Oil pressure will be indicatedwhen the engine is running.Component damage hazard.Do not crank the engine with thelow oil pressure light on.a bcd
