Manual de servicio

Hydraulic Pump Instruction Manual. Thank you for purchasing a Hydraulic Hand Pump from Crystal Engineering. Hydraulic hand pumps provide a portable pressure source for calibration of high pressure gauges, recorders, switches and transmitters. The built-in variable volume provides a way to set the pressure precisely, regardless of how high the pressure is. There are two pressure ports on the pump. Mount a Crystal Gauge or Calibrator directly to the front of the pump, connect the spare port directly to the device being tested, and you have a complete field pressure calibration system. A 1m (3ft.) CPF high pressure hose, and CPF Female to1⁄4″ Male NPT is included, along with a convenient plastic bottle for hydraulic fluid. AInternal parts of the pump are made of Buna-N rubber, aluminum, brass and stainless steel. The pump can be used with oil, water, or other compatible fluids. Use of water will accelerate wear of “O” rings and some sticking of piston may result. The recommended fluid is any petroleum based hydraulic oil, light weight motor oil or mineral oil. Do not use brake fluid or synthetic oils; they may crack the polycarbonate reservoir or cause swelling or decomposition of the “O” rings.Connections: Your pump has two connections. A 1⁄4″ female NPT pressure port for a reference gauge or calibrator (figure 1) and a CPF female connection (figure 2). Always use PTFE (polytetrafluoro-ethylene) tape on the threads of any pressure fittings installed into the NPT port. Connect your reference gauge, or plug the 1⁄4″ female NPT port prior to priming or using your pump. As for the hose connection, we offer a wide variety of CPF fittings to. Fluid: Choose a fluid for your pump. We recommend any petroleum based hydraulic oil, lightweight motor oil, or mineral oil. Water can also be used, but it will accelerate the wear of “O” rings, and may cause some sticking of the piston. Do not use brake fluid or synthetic oils which may attack the polycarbonate reservoir, or cause swelling or decomposition of the “O” rings. Your fluid can be stored in the convenient plastic fluid dispensing bottle (supplied with the pump).

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Hydraulic Cylinder Service Manual.1. Always drain the pressure from a hydraulic system before performingany service work. Disconnect hydraulic lines from head and cap ports of cylinder. 2. Completely disassemble the cylinder using the exploded and assembly views as reference. No special tools are required except internal snap ring pliers. The piston rod assembly consisting of piston, piston rod and head cushion bushing (where used) are locktited and secured at the factory and are not to be disassembled. 3. After disassembling the cylinder, wash all metal parts in a non-fl ammable solvent. Rinse each part thoroughly and blow dry with a low-pressure air jet. Arrange the parts on a clean surface. Examine each part carefully. Replace all seals and any other worn or damaged parts. 4. Particular attention should be given to the piston rod (item 10) since cylinder leakage can result from a damaged rod. A scored rod might damage the rod bearing and, subsequently, the rod packing. Rod cartridge kits come with a new rod bearing plus seals (see Seal Kit table on page 6 of this manual.). 1. Remove the hex head bolts (item 15) from the head end (item 1). On the ME5 mount only, the rod cartridge retainer plate is held in place by socket head cap screws, which must also be removed. 2. Remove the retainer plate or fl ange (item 5) from the head end. Locate the screwdriver slot along the top of the rod bearing (item 16). Using a fl athead screwdriver, carefully pry the rod cartridge loose from the head in a fashion similar to opening a can of paint. The rod bearing assembly includes the wiper (item 19a), the rod seal (item 19b), the bearing o-ring and backup ring (items 19c-d), and the rod bearing (item 16) itself.

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