310526U, Instructions-Parts List for Ram Supply Unit ... - Graco Inc.

Troubleshooting ChartProblem Cause(s) Solution(s)Ram won’t raise or lower. Closed main air valve or clogged air Open air valve, clear air line.line.Not enough air pressure.Increase ram pressure.Worn or damaged piston.Replace piston. See procedure inService section of Form #310525.Hand valve closed or clogged.Open, clear hand valve or exhaust.Ram raises or lowers too fast. Ram air pressure too high. Decrease ram air pressure.Air leaks around cylinder rod. Worn rod seal. Replace o-rings in guide sleeve.See procedure in Service section ofForm #310525.Fluid squeezes past follower plate Ram air pressure too high.Decrease ram air pressure.wiper.Worn or damaged wiper.Replace wiper. See procedure onpage 17.Pump won’t prime properly, orpumps air.Air pressure won’t hold pail downor push plate up.Closed main air valve or clogged airline.Not enough pump air pressure.Worn or damaged piston.Hand valve closed or clogged.Hand valve dirty, worn or damaged.Bent pail has stopped follower.Closed main air valve or clogged airline.Not enough ram air pressure.Valve passage clogged.Worn piston seal.Open air valve, clear air line.Increase pump pressure.Replace piston. See procedure inService section of Form #310525.Open, clear hand valve or exhaust.Clean, service hand valve.Replace pail.Open air valve, clear air line.Increase ram air pressure.Clean valve passage.Replace seal.16310526